From Cave Paintings to the Internet A Chronological and Thematic Database on the History of Information and Media Communication Timeline

Pieces of ochre rock decorated with geometric patterns found at Blombos Cave in South Africa, nearly 200 miles from Cape Town, in 2002, have been dated to the Middle Stone Age, equivalent to the European Middle Paleolithic.

"Despite well over 100 years of research and debate, the origins of art remain contentious. In recent years, abstract depictions have been documented at southern African sites dating to approx 75 kyr [75,000 years] before present (bp) and the earliest figurative art, which is often seen as an important proxy for advanced symbolic communication, has been documented in Europe as dating to between 30 and 40 kyr [30-40,000 years before present]. Here I report the discovery of a female mammoth-ivory figurine in the basal Aurignacian deposit at Hohle Fels Cave in the Swabian Jura of southwestern Germany during excavations in 2008. This figurine was produced at least 35,000 calendar years ago, making it one of the oldest known examples of figurative art. This discovery predates the well-known Venuses from the Gravettian culture by at least 5,000 years and radically changes our views of the context and meaning of the earliest Palaeolithic art" (Nicholas J. Conard, "A female figurine from the basal Aurignacian of Hohle Fels Cave in southwestern Germany," Nature, 459, 248-252 (14 May 2009) | doi:10.1038/nature07995).

You can watch a Nature video presentation on this discovery by American archaeologist Nicholas Conard from the department of Early Prehistory and Quaternary Ecology, University of Tübingen, at: http://www.nature.com/nature/videoarchive/prehistoricpinup/, (accessed 05-14-2009.)

The small figurine has been called The Venus of Schelklingen (Venus of Hohle Fels). was found near Schelklingen, Germany.  Belonging to the early Aurignacian, at the very beginning of the Upper Paleolithic and the earliest presence of Homo sapiens (Cro-Magnon) in Europe, "the discovery of the Venus of Schelklingen pushes back the date of the oldest prehistoric sculpture, and the oldest known figurative art altogether, by several millennia, establishing that works of art were being produced throughout the Aurignacian.

"The figurine was discovered in September 2008 in a cave called Hohle Fels (Swabian German for "hollow rock") near Schelklingen, some 15 kilometres (9 mi) west of Ulm, Baden-Württemberg, Germany, by a team from the University of Tübingen led by Prof. Nicholas Conard, who reported their find in Nature.

"The figurine, made of a mammoth tusk, is a representation of the female body, putting emphasis on the vulva and the breasts, and is consequently assumed to be an amulet related to fertility. In place of the head, the figurine has a perforation so that it could be worn as a pendant. Archaeologist John J. Shea suggests it would have taken "tens if not hundreds of hours" to carve. The figurine was found in the cave hall, about 20 metres (66 ft) from the entrance, and about 3 metres (10 ft) below the current ground level. It was broken into fragments, of which six have been recovered, with the left arm and shoulder still missing" (Wikipedia article on Venus of Schelklingen, accessed 05-14-2009).

• In 2003 Nicholas Conard reported the discovery of a carved waterbird looking something like a diving cormorant, and a carved horse head from the same Hohle Fels cave. These are thought to date from 31,000 to 28,000 BCE:

N.J. Conard, "Palaeolithic ivory sculptures from southwestern Germany and the origins of figurative art," Nature 426 (2003) 830–832.

The so-called Lionheaded Figurine, a zoomorphic /anthropomorphic sculpture 29.6 cm high, 5.6 cm wide and 5.9 cm thick. carved out of mammoth ivory, was discovered in 1939 in a cave named Stadel-Höhle im Hohlenstein in the Lonetal, Swabian Alb, Germany.

"Due to the beginning of the Second World War, it was forgotten and only rediscovered thirty years later. The first reconstruction revealed a humanoid figurine without head. During 1997 through 1998 additional pieces of the Sculpture were discovered and the head was reassembled and restored."

"The sculpture shares certain similarities with French cave wall paintings, which also show hybrid creatures. The French paintings, however, are several thousand years younger than the German sculpture.

"After this artifact was identified, a similar, but smaller, lion-headed sculpture was found, along with other animal figures, in another cave in the same region of Germany. This leads to the possibility, that the lion-figure played an important role in the mythology of humans of the early Upper Paleolithic"(Wikipedia article on Lion man, accessed 05-14-2009).

The figurine is preserved in the Ulmer Museum in Ulm, Germany, which maintains a website for the figurine, with a video at this link: http://www.loewenmensch.de/lion_man.html, accessed 05-14-2009).

Dependent as we are on written culture we should not lose sight of the advantages of orally transmitted traditions:

"Some might argue that, without writing, the same beliefs could not have prevailed over such a long period of time, but in reality, oral traditions are far more faithfully passed on than the written word. A written account can be open to multiple interpretations, distortions, and transformations, depending on the time and situation, economic imperatives, or the whims of political or religious leaders. Orally transmitted traditions, in contrast, must be rigorously and accurately passed on in order to survive in all their subtlety, and in the smallest of details. Furthermore, the written word, thought to be the surer and safer means of communication, is not only less reliable but also more permeable to outside aggression than are the more secret codes of an oral system. During the time of the Roman Empire, for instance, the fact that the Celts were still 'prehistoric'—meaning that they hadn't recorded their history, ways, and beliefs— made it much harder for the conquering Romans to devise an appropriate strategy to subjugate them" (Desdemaines-Hugon, Stepping-Stones. A Journey Through the Ice Age Caves of the Dordogne [2010] 75).

The Venus of Dolní Věstonice (Czech: Věstonická Venuše), a ceramic Venus figurine, found at a Paleolithic site in the Moravian basin south of Brno,  is, together with a few others from nearby locations,  the oldest known ceramic in the world, predating the use of fired clay to make pottery. It is 111 millimeters (4.4 inches) tall, and 43 millimeters (1.7 inches) at its widest point, and is made of a clay body fired at a relatively low temperature.

"The palaeolithic settlement of Dolní Věstonice in Moravia, then Czechoslovakia, now Czech Republic has been under systematic archaeological research since 1924, initiated by Karel Absolon. In addition to the Venus figurine, figures of animals - bear, lion, mammoth, horse, fox, rhino and owl - and more than 2,000 balls of burnt clay have been found at Dolní Věstonice.

"The figurine was discovered on July 13, 1925 in a layer of ash, broken into two pieces. Once on display at the Moravian Museum in Brno, it is now protected and only rarely accessible to the public. Last time it was exhibited in the National Museum in Prague from 2006-10-11 till 2007-09-02 as a part of the exhibition Lovci mamutů (The Mammoth Hunters).  Scientists periodically examine the statuette. A tomograph scan in 2004 found a fingerprint of a child estimated at between 7 and 15 years of age, fired into the surface; the child who handled the figurine before it was fired is considered by Králík, Novotný and Oliva (2002) to be an unlikely candidate for its maker" (Wikipedia article on Venus of Dolní Vestonice, accessed 05-14-2009).

The Venus of Willendorf, an 11.1 cm (4 3/8 inches) high statuette of a female figure, was discovered in 1908 by archaeologist Josef Szombathy at a paleolithic site near Willendorf, a village in Lower Austria near the city of Krems. It is preserved in the Naturhistorisches Museum, Vienna.

For a long time this sculpture, carved from an oolitic limestone not local to its area, and tinted with red ochre, was thought to be the earliest sculpture of a human.

Since the figure's discovery and naming, several similar statuettes and other forms of art have been discovered, including earlier examples. They are collectively referred to as Venus figurines, although they pre-date the mythological figure of Venus by thousands of years. The purposes of these carvings have been subject to much speculation.

The Venus of Brassempouy or La Dame de Brassempouy,  a fragmentary ivory figurine from the Upper Palaeolithic, Gravettian industry, discovered in the Grotte du Pape at Brassempouy, France in 1892, by Édouard Piette, is one of the earliest known realistic representations of a human face. 

"She is 3.65 cm high, 2.2 cm deep and 1.9 cm wide. Her face is triangular and seems tranquil. While forehead, nose and brows are carved in relief, the mouth is absent. A vertical crack on the right side of the face is linked to the internal structure of the ivory. On the head is a checkerboard-like pattern formed by two series of shallow incisions at right angles to each other; it has been interpreted as a wig, a hood, or simply a representation of hair.

"Even though the head was discovered so early in the development of modern archaeology that its context could not be studied with all the attention it would have deserved, there is no doubt that the Venus of Brassempouy belonged to an Upper Palaeolithic material culture, the Gravettian (29,000–22,000 BP), more precisely the Middle Gravettian, with "Noailles" burins circa 26,000 to 24,000 BP.

"She is more or less contemporary with the other Palaeolithic Venus figurines, such as those of Lespugue, Dolní Věstonice, Willendorf, etc. Nonetheless, she is distinguished among the group by the realistic character of the representation" (Wikipedia article on Venus of Brassempouy, accessed 05-14-2009).

The Venus of Brassempouy is preserved in the Musée d'Archéologie nationale, Saint-Germain-En-Laye.

Randall White, "The women of Brassempouy: A century of research and interpretation," Journal of Archaeological Method and Theory 13.4, December 2006:251ff.

Horse domestication revolutionized transportation, accelerated communication, and transformed warfare in prehistory.  Yet the identification of early domestication processes has been problematic.

In a paper published in the journal Science on March 6, 2009 archaeologist Alan K. Outram and seven co-authors published "three independent lines of evidence demonstrating domestication in the Eneolithic Botai Culture of Kazakhstan, dating to about 3500 B.C.E. Metrical analysis of horse metacarpals shows that Botai horses resemble Bronze Age domestic horses rather than Paleolithic wild horses from the same region. Pathological characteristics indicate that some Botai horses were bridled, perhaps ridden. Organic residue analysis, using δ13C and δD values of fatty acids, reveals processing of mare's milk and carcass products in ceramics, indicating a developed domestic economy encompassing secondary products" (http://www.sciencemag.org/cgi/content/abstract/323/5919/1332, accessed 03-06-2009).

Prior to discovery of this evidence horse domestication was thought to have occurred around 2500 BCE.

♦ Before horses were domesticated it appears that prehistoric people mainly killed horses for food.  One of the most celebrated collections of horse and reindeer bones was found beneath the precipice at the paleolithic site of Solutré in France.  Though prehistoric people primarily hunted the reindeer for food and other necessities of life, an explanation for the immense deposit of bones at Solutré is that prehistoric people stampeded reindeer and horses over the cliff as a means of killing them.

By the time of Herodotus (circa 484-425 BCE) the Persian Royal Road ran some 2,857 km from the city of Susa on the lower Tigris to the port of Smyrna (modern Izmir in Turkey) on the Aegean Sea.  A highway built by the Persian king of kings Darius I to facilitate rapid communication throughout the Persian Empire,  the Royal Road was protected by Persian rulers and later used by the Romans. On this road couriers, riding in relays, could travel 1,677 miles (2,699 km) in seven or nine days.

Herodotus wrote:

“There is nothing that travels faster, and yet is mortal, than these couriers; the Persians invented this system, which works as follows. It is said that there are as many horses and men posted at intervals as there are days required for the entire journey, so that one horse and one man are assigned to each day. And neither snow nor rain nor heat nor dark of night keeps them from completing their appointed course as swiftly as possible. The first courier passes on the instructions to the second, the second to the third, and from there they are transmitted from one to another all the way through, just as the torchbearing relay is celebrated by the Hellenes in honor of Hephaistos. The Persians call this horse-posting system the angareion" (Strassler [ed] The Landmark Herodotus: The Histories [2007] 8.98, p. 642). 

By having fresh horses and riders ready at each relay, royal couriers may have carried messages the entire distance in 7 to 9 days, though normal travelers, or an army on foot, might have taken about three months. This Royal Road linked into many other routes in the overall trade network known as the Silk Road. Some of these roads, such as the routes to India and Central Asia, were also protected, encouraging regular contact between India, Mesopotamia and the Mediterranean. There are accounts in the Old Testament Book of Esther of dispatches being sent from Susa to provinces as far out as India and Cush (Kush) during the reign of Xerxes (485-465 BCE).

"The postal system during the reign of Xerxes I is also described in the Biblical Book of Esther. While the historical details of the Book of Esther are difficult to verify, it would appear that a swift messenger system connecting all provinces of the Persian Empire was at the disposal of the ruler. In this case, the system was used not to gather information about provincial affairs but to send royal decrees throughout the realm. Thus, when Hāmān secured the King’s permission to kill the Jews of the empire, ‘Letters were sent by courier to all the King’s provinces with orders to destroy, slay and exterminate all Jews’ (Esther 3: 13). When, through the efforts of Mordecai and Esther, the King agreed to spare the Jews, ‘Letters were sent by mounted couriers riding on horses from the royal stable. By these letters the King granted permission to the Jews in every city to unite and defend themselves …’ (8: 10); thus ‘the couriers, mounted on their royal horses, were despatched post-haste at the King’s urgent command; and the decree was issued also in Susa the capital’ (8: 14).

"In this case, the Achaemenid postal system was employed to circulate royal decrees throughout the provinces of the empire, using riders ‘on horses from the royal stable’. The English translation of these verses is deceptively readable and cannot be seen as loyal to the complexities of the original Hebrew text. For instance, the term aḥashtranīm (Esther 8: 10, 14) used to describe the royal mounts has conveniently been ignored in the English version. In fact, this word is a hapax legomenon and has generated exegetical controversy" (Silverstein, Postal Systems in the Pre-Islamic World [2007] http://www.cambridge.org/us/catalogue/catalogue.asp?isbn=9780521858687&ss=exc, accessed 01-14-2010).

Until the development of effective optical telegraph systems at the end of the 18th century, messengers on horseback, riding over a good road system,  remained the fastest method of sending a message overland.

As the founder of historical writing, Herodotus's references to written or archival records in his Histories are of particular interest. By the mid-fifth century BCE writing in Greece had existed for only about 300 years. Because writing was relatively new, and only a small portion of society was literate, it may not be surprising that Herodotus appears to have consulted few written sources in compiling his Histories. From Herodotus's own account it seems that most often he did not find it necessary, or perhaps practical, to verify information that he compiled from personal observation through the consultation of written records. Herodotus also expected his Histories to be read aloud, in which case citing written sources within the Histories might have been a kind of distraction.

Herodotus usually refers to records in the context of government, law, or communication. He often refers to dispatches sent by leaders as part of political or military negotiations, such as dispatches sent in the context of war. He describes attempts to send secret messages. He also refers to records used for the enforcement of laws, which were, of course, in written form. He is aware of both the advantages and disadvantages of writing over oral communication.

"Herodotus recognized the usefulness of writing for interpersonal communication, but he also knew that it could be problematic. Because writing fixed a message in time and space, a written document that seemed objective and straightforward could also be full of paradoxes. In the generation after Herodotus, Socrates would complain (in the dialogue Phaedrus, set down by Plato) that writing represented 'no true wisdom, . . . but only its semblance.' Written words 'seem to talk to you as though they were intelligent,' the philosopher said, 'but if you ask them anything about what they say, from a desire to be instructed, they go on telling you the same thing for ever.' Even worse, once something is put in writing it 'drifts all over the place, getting into the hands not only of those who understand it, but equally of those who have no business with it; it doesn't know how to address the right people, and not address the wrong. '  

"Like Socrates, Herodotus knew that writing was full of ambiguities. Since a written document could not be cross-examined as a speaking person could, it might be used not to inform but to deceive. Themistocles, the Athenian general who led the resistance to the invasion of Xerxes. knew this too. Both sides in the war were vying for the help of the Ionians, descendants of Greek settlers who had colonized the Aegean islands and the adjacent mainland coastal areas of present-day Turkey. Most Ionians sided with the Persians, their powerful near-neighbours, but the Greeks sought their aid on the grounds of common ancestry. Themistocles used the ambiguity of writing to enlist their help, or at least to minimize the potential harm they might do to the Greek cause. He sent men to the "drinkable-water places" where Ionian ships put in for resupply, and he had them cut written messages into the rocks there, urging the Ionians to abandon Xerxes and join the Greek side. His plan was clever: either the Ionians who read the messages would be persuaded to rebel against the Persians, he reasoned, or Xerxes himself would see the messages and distrust his allies, withholding them from the order of battle (8.22). As it happened, only a few Ionians defected to the Greeks (see 8.85), but a more important point had been made: writing could send a deliberately confusing message as well as a direct one. Writing was not always so straightforward as it appeared to be.

"Writing could also be useful for sending messages in secret, and Herodotus provided several examples of how written records promoted secrecy. There was a danger in committing anything to writing since, if the document were intercepted, secrecy would be lost. Histiaeus, who had been made Despot of Miletus by Darius, learned this lesson when he sought through secret messages to stir up a revolt against his benefactor. The King's brother intercepted these letters, read them, and then sent them on to their original destination, having meanwhile profited from knowing what plans were afoot. When the revolt came, the loyal forces 'killed a great number ... when they were thus revealed' (6.4). Still, writing out a message and smuggling it to a confederate could be safer than entrusting it orally to a messenger, who could be bribed or tortured into talking if apprehended. Because of the possibility of such discovery, special care was needed over secret communications, and Herodotus found several instances of such security precautions.

"These stories present the historian at his anecdotal best, and we may well doubt whether any of them actually happened. Their very dramatic content, however, highlights the problem Socrates complained of; namely, writing drifting 'all over the place' and getting into the wrong hands. In one case, a Mede named Harpagus plotted with Cyrus to overthrow the King and install the young man in his place. 'Because the roads were guarded,' a secret message had to be smuggled through by some 'contrivance.' Harpagus took a hare and split open its belly, leaving the fur intact. Next, he inserted "a paper on which he wrote what he wanted," stitched the animal back together, and entrusted it to a servant, disguised as an innocuous huntsman. The servant made it past the guards along the road and delivered the message to its intended recipient (1.123; the text of the message itself is at 1.124)" (O'Toole, "Herodotus and the Written Record," Archivaria 33 (1991-92) 153-54).

According to Polybius, a Greek historian of the Hellenistic period, Aeneas Tacticus, one of the earliest Greek writers on the art of war, invented the hydraulic telegraph about this time. It was a semaphore system used during the First Punic War to send messages between Sicily and Carthage.

"The system involved identical containers on separate hills; each container would be filled with water, and a vertical rod floated within. The rods were inscribed with various predetermined codes.

"To send a message, the sending operator would use a torch to signal the receiving operator; once the two were synchronized, they would simultaneously open the spigots at the bottom of their containers. Water would drain out until the water level reached the desired code, at which point the sender would lower his torch, and the operators would simultaneously close their spigots."

The emperor Augustus creates the Cursus publicus, the courier service of the Roman empire, to transport messages, officials, and tax revenues from one province to another.

Though Augustus based the Roman system on the Persian model of relay riders passing a message from one courier to the next, he switched to a system in which one man made the entire journey carrying the message. This had the advantage of enabling the messenger to be questioned regarding additional information, and it may have provided additional security.  However, it also slowed down the speed of communication.

Various authorities have  estimated that the average speed of a messenger over the Roman road system was about 50 miles per day—a substantial reduction in speed from the relay methods used by the Persian Empire.

It has also been estimated from surviving accounts of Roman voyages that the fastest Roman ships sailed at five knots or 120 miles per day in good weather and two knots or 50 miles per day in unfavorable weather.

Bishop Wealdhere of London writes a "letter close" to Archbishop Brihtwold of Canterbury.

This is the earliest surviving

"letter known to have been written by one Englishman to another. . . . Although the letter has no dating clause, internal evidence shows that it cannot have been written earlier than 704, the year of Centred's accession to the Mercian throne, or later than 705, the year of Bishop Haedde's death" (Pierre Chaplais, "The letter from Bishop Wealdhere of London to Archibshop Brihtwold of Canterbury: the earliest original 'letter close' extant in the West", Parkes and Watson (eds.) Medieval Scribes, Manuscripts & Libraries. Essays presented ot N.R. Ker [1978] 3-4).

♦ Just as today, single letters stand a much lesser chance of long-term preservation than bound volumes.

♦ The Vindolanda Writing Tablets, excavated from the Roman fort of Vindolanda in Northern Britain in the 20th century, and noticed in this database, include letters from Roman soldiers stationed in Britannia, circa 100 CE.

♦ With the departure of the last Roman legions from Britain in 410 CE, and the end of Roman rule in Brittania, literacy left England. From the time of the departure of the Romans to the arrival of in 597 of Augstine of Canterbury on a mission to convert the Anglo-Saxons, and for a period thereafter, it is believed that the people of Britain were essentially illiterate.

The Tabula Peutingeriana is an itinerarium or Roman road map, showing the road network of the Roman Empire. It is a unique copy, made by a monk in Colmar, Alsace, in the thirteenth century of a map that was last revised in the fourth or early fifth century.  That, in turn, was a descendent of the map prepared under the direction of Marcus Vipsanius Agrippa, a friend of Augustus. After Agrippa's death the map was engraved on marble and placed in the Porticus Vipsaniae, not far from the Ara Pacis in Rome.

The Tabula Peutingeriana "is a parchment scroll, 0.34 m high and 6.75 m long, assembled from eleven sections, a medieval reproduction of the original scroll. It is a very schematic map: the land masses are distorted, especially in the east-west direction. The map shows many Roman settlements, the roads connecting them, rivers, mountains, forests and seas. The distances between the settlements are also given. Three most important cities of the Roman Empire, Rome, Constantinople and Antioch, are represented with special iconic decoration. Besides the totality of the Empire, the map shows the Near East, India and the Ganges, Sri Lanka (Insula Taprobane), even an indication of China. In the west, the absence of the Iberian Peninsula indicates that a twelfth original section has been lost in the surviving copy.

"The table appears to be based on "itineraries", or lists of destinations along Roman roads, as the distances between points along the routes are indicated. Travellers would not have possessed anything so sophisticated as a map, but they needed to know what lay ahead of them on the road, and how far. The Peutinger table represents these roads as a series of roughly parallel lines along which destinations have been marked in order of travel. The shape of the parchment pages accounts for the conventional rectangular layout. However, a rough similarity to the coordinates of Ptolemy's earth-mapping gives some writers a hope that some terrestrial representation was intended by the unknown compilers.

"The stages and cities are represented by hundreds of functional place symbols, used with discrimination from the simplest icon of a building with two towers to the elaborate individualized "portraits" of the three great cities. Annalina and Mario Levi, the Tabulas editors, conclude that the semi-schematic semi-pictorial symbols reproduce Roman cartographic conventions of the itineraria picta described by Vegetius, of which this is the sole testimony."

The map is named after Konrad Peutinger, a German humanist and antiquarian, who inherited it from Konrad Birkel or Celtes, who claimed to have "found" it somewhere in a library in 1494.  

"The map was copied for Ortelius and published shortly after his death in 1598. A partial first edition was printed at Antwerp in 1591 (Fragmenta tabulæ antiquæ) by Johannes Moretus. Moretus would print the full Tabula in December 1598, also at Antwerp."

"The Peutinger family kept the map until 1714, when it was sold. It bounced between royal and elite families until it was purchased by Prince Eugene of Savoy for 100 ducats; upon his death in 1737 it was purchased for the Habsburg Imperial Court Library (Hofbibliothek) in Vienna." 

It is preserved at the Österreichische Nationalbibliothek in Vienna.

Maffeo and Niccolò Polo set out on a second journey carrying the Pope's response to Kublai Khan, in 1271. This time Niccolò took his son Marco. When Marco Polo arrived at Kublai Khan's court he became a favorite of the khan and was employed in China for 17 years.

"In his book, Il Milione, Marco explains how Kubilai officially received the Polos and sent them back — with a Mongol named Koeketei as an ambassador to the Pope.. They brought with them a letter from the Khan requesting educated people to come and teach Christianity and Western customs to his people, and the paiza, a golden tablet a foot long and three inches wide, authorizing the holder to require and obtain lodging, horses and food throughout the Great Khan's dominion. Koeketei left in the middle of the journey, leaving the Polos to travel alone to Ayas in the Armenian Kingdom of Cilicia. From that port city, they sailed to Saint Jean d'Acre, capital of the Kingdom of Jerusalem."  

"The long sede vacante — between the death of Pope Clement IV, in 1268, , and the election of Pope Gregory X, in 1271— prevented the Polos from fulfilling Kublai’s request. As suggested by Theobald Visconti, papal legate for the realm of Egypt, in Acres for the Ninth Crusade, the two brothers returned to Venice in 1269 or 1270, waiting for the nomination of the new Pope (Wikipedia article on Niccolò and Marco Polo, accessed 04-04-2010).

"Among the many roads and trails constructed in pre-Columbian South America, the Inca road system, or Qhapaq Ñan was the most extensive and highly advanced for its time. The network was based on two north-south roads. The eastern route ran high in the puna and mountain valleys from Quito, Ecuador to Mendoza, Argentina. The western route followed the coastal plain except in coastal deserts where it hugged the foothills. More than twenty routes ran over the western mountains, while others traversed the eastern cordilla in the montana and lowlands. Some of these roads reach heights of over 5,000 metres (16,000 ft) above sea level. The trails connected the regions of the Inca empire from the northern provincial capital in Quito, Ecuador past the modern city of Santiago, Chile in the south. The Inca road system linked together about 40,000 km of roadway and provided access to over three million km² of territory.

"These roads provided easy, reliable and quick routes for the Empire's civilian and military communications, personnel movement, and logistical support. The prime users were imperial soldiers, porters and llama caravans, along with the nobility and individuals on official duty. Permission was required before others could walk along the roads, and tolls were charged at some bridges. Although the Inca roads varied greatly in scale, construction and appearance, for the most part they varied between about one and four meters in width.

"Much of the system was the result of the Incas claiming exclusive right over numerous traditional routes, some of which had been built centuries earlier. Many new sections were built or upgraded substantially: through Chile's Atacama desert, and along the western margin of Lake Titicaca, as two examples.

"Spanish chroniclers frequently described lengthy journeys made by the Inca ruler, carried on a litter, and surrounded by thousands of soldiers and retainers, to various parts of his empire.

"Because the Incas did not make use of the wheel for transportation, and did not have horses until the arrival of the Spanish in Peru in the 16th century, the trails were used almost exclusively by people walking, sometimes accompanied by pack animals, usually the llama.

"Relay messengers, or chasqui, stationed at intervals of 6 to 9 km, carried both messages and objects such as fresh marine fish for the rulers in the sierra. Messages consisted of knotted-cord records known as quipu along with a spoken message. Chaskis could cover an estimated 240 km per day.

"There were at least 1,000 and perhaps 2,000 way stations or tambos, placed at even intervals along the trails. These structures were intended to lodge and provision itinerant state personnel.

"Various means were used to bridge water courses. Rafts were used to cross wide meandering rivers. Bridges built of stone or floating reeds were used in marshy highlands. Inca rope bridges provided access across narrow valleys. A bridge across the Apurimac River, west of Cuzco, spanned a distance of 45 meters. Ravines were sometimes crossed by hanging baskets, or oroya, which could span distances of over 50 meters. Bridges were sometimes built in pairs" (Wikipedia article on Inca Road System, accessed 07-24-2009).

The Venetian Senate grants the German printer Johannes de Spira (Speyer) a five-year monopoly on printing in the city.

This was the first monopoly on printing granted by a European government.

Speyer initiated printing in Venice in 1469, issuing Cicero's Epistolae ad familiares in an edition of 100 copies (ISTC no. ic00504000). "Four months" later he issued a second edition of 300 copies (ISTC no. c00505000). He also published the first edition of Pliny's Historia naturalis in a printing of 100 copies (ISTC no. ip00786000). From the text of the decree it appears that the Venetian Senate granted the monopoly to Speyer as a way of supporting his ongoing work, which they much admired.

The manuscript of the grant is preserved in the Venetian State Archives (ASV, NC, reg. 1, c.55r). It is reproduced in color and translated in  Primary Sources on Copyright (1450-1900), eds L. Bently & M. Kretschmer, www.copyrighthistory.org, from which I quote:

"The art of printing books has been introduced into our renowned state, and from day to day it has become more popular and common through the efforts, study and ingenuity of Master Johannes of Speyer, who chose our city over all the others. Here he lives with his wife, children and whole household; practices the said art of printing books; has just published, to universal acclaim, the Letters of Cicero and Pliny's noble work On Natural History, in the largest type and with the most beautiful letter-forms; and continues every day to print other famous volumes so that [this state] will be enriched by many, famous volumes, and for a low price, by the industry and fortitude of this man. Whereas such an innovation, unique and particular to our age and entirely unknown to those ancients, must be supported and nourished with all our goodwill and resources and [whereas] the same Master Johannes, who suffers under the great expense of his household and the wages of his craftsmen, must be provided with the means so that he may continue in better spirits and consider his art of printing something to be expanded rather than something to be abandoned, in the same manner as usual in other arts, even much smaller ones, the undersigned lords of the present Council, in response to the humble and reverent entreaty of the said Master Johannes, have determined and by determining decreed that over the next five years no one at all should have the desire, possibility, strength or daring to practice the said art of printing books in this the renowned state of Venice and its dominion, apart from Master Johannes himself. Every time that someone shall be found to have dared to practice this art and print books in defiance of this determination and decree, he must be fined and condemned to lose his equipment and the printed books. And, subject to the same penalty, no one is permitted or allowed to import here for the purpose of commerce such books, printed in other lands and places. . . ."

"Scholars and writers too went more readily to Venice than to any other city, in their search for publishers, attracted by the excellence of the local paper stock and typography as much as relatively liberal atmosphere in the city. In contrast to other early modern states where censorship and state regulation took on early to encourage and protect the nascent trade, in Venice, the trade was left virtually uncontrolled in the first years of its development. It was only in 1515 when Andrea Navagero was appointed for the task of the official revision of books that the state began to exercise a degree of control over what was printed. Even then, this literary censorship was primarily concerned with the quality of printed books to secure commercially successful correct editions. Thus the natural play of economic forces had left printers free to establish their printing enterprises and compete against each other in an open market. In other words, Venice was an ideal place from which to begin the 'printing revolution.'

"The rapid expansion of the printing industry leaves no doubt that Venice was the first city in the world to feel the full impact of printing, and to experience the most important revolution in human communications, and a favourable territory in which the system of copyright could develop. This, however, did not make Venice into a champion of literary property. It would take a long time before the copyright holder was identified with the moral or aesthetic personality of the writer.

"The best-known explanation for the emergence of author's rights is a technological one, viewing the need to protect literary production as a consequence of the invention of printing. In a manuscript culture, texts were treated as common property, and copying another man's work was often considered more of a favour than an injury. . . .

"It is not so much printing as the existence of a market in books and ideas that introduced concepts of intellectual property. As the literary market increased in importance, authors, who might well be writing for a living and competing for recognition, began to stress the distinctiveness of their products, in other words their intellectual or literary originality. Printing encouraged the development of such a market and expanded the concept of a book as a commodity (selling object). However, the concept of a book as a particular category of commodity - the work of the mind - was slow to develop" (Primary Sources on Copyright (1450-1900), eds L. Bently & M. Kretschmer, www.copyrighthistory.org, accessed 07-24-2009).

Italian cryptologist Giovan Battista Bellaso publishes La Cifra del Sig. Giovan Battista Bel[l]aso, describing a text autokey cipher that will be considered unbreakable for four centuries. "He suggested identifying the alphabets by means of an agreed-upon countersign or keyword off-line. He also taught various ways of mixing the cipher alphabets in order to free the correspondents from the need to exchange disks or prescribed tables.

"In 1550 Bellaso "was in the service of Cardinal Duranti in Camerino and had to use secret correspondence in the state affairs while his master was in Rome for a conclave. Versed in research, able in mathematics, Bellaso dealt with secret writing at a time when this art enjoyed great admiration in all the Italian courts, mainly in the Roman Curia. In this golden period of the history of cryptography, he was just one of many secretaries who, out of intellectual passion or for real necessity, experimented with new systems during their daily activities. His cipher marked an epoch and was considered unbreakable for four centuries. As a student of ciphers, he mentioned among his enthusiasts many eminent gentlemen and ‘‘great princes’’. In 1552, he met count Paolo Avogadro, count Gianfrancesco Gambara, and the renowned writer Girolamo Ruscelli, also an expert in secret writing, who urged him to reprint a reciprocal table that he was circulating in loose-leaf form, in print and manuscript. The table was to be duly completed with the instructions. Copies of these tables exist in contemporary private collections in Florence and Rome" (Wikipedia article on Giovan Battista Belaso, accessed 12-22-2008).

The Venetian government issues prepaid letter sheets -- the first offically sold prepaid postal stationery.

At the top of the sheets the letters "AQ" (a contraction of acque) were printed, as the pre-paid sheets were intended to generate revenue for the repair and upkeep of the waterworks in the city by the Collegio alle Acque. Below the large letters "AQ" and the lion of Venice was a statement of the statute by which the system operated with a surcharge of 4 soldi on the cost of posting a letter.  Each sheet had an identification number printed at the top left, and the name of the revenue officer by whom they were issued. The system  remained in operation until the end of 1797. (Samuel Gedge Ltd., Rare Books Catalogue V [2008] 97.)

A value of these sheets was that the user could assume that the letter would definitely be delivered. Most private  postal services operating at the time charged the recipient for the delivery with the result that mail was often refused.

Claude Chappe his brother send the first transmission over their optical telegraph: “si vous reussissez, vous serez bientôt couvert de gloire” (If you succeed, you will soon bask in glory).

The initial experimental line ran between Brulon and Parce, a distance of ten miles (16 km).

Having been appointed Ingénieur-Télégraphiste and charged with establishing a line of stations between Paris and Lille, a distance of 230 kilometres (about 143 miles), Claude Chappe succeeds in completing his first optical telegraph, or semaphore telegraph. 

The Chappe telegraph was used to carry dispatches for the war between France and Austria, and communicated  news of a French capture of Condé-sur-l'Escaut from the Austrians less than an hour after it occurred.

"The first symbol of a message to Lille would pass through 15 stations in only nine minutes. The speed of the line varied with the weather, but the line to Lille typically transferred 36 symbols, a complete message, in about 32 minutes. Paris to Strasbourg with 50 stations was the next line and others followed soon after."

Chappe's system was the first widely adopted system to transmit messages overland faster than a messager or horseback can carry a message over a good road system. That speed had remained essentially fixed since Roman times. (See Reading 5.1.)

The Chappe optical telegraph eventually covered France with "a network of 556 stations stretching a total distance of 4,800 kilometres." It was be used for military and national communications until the 1850s.

"By 1824, the Chappe brothers were promoting the semaphore lines for commercial use, especially to transmit the costs of commodities. Napoleon Bonaparte saw the military advantage in being able to transmit information between locations, and carried a portable semaphore with his headquarters. This allowed him to coordinate forces and logistics over longer distances than any other army of his time. However because stations had to be within sight of each other, and because the efficient operation of the network required well trained and disciplined operators, the costs of administration and wages were a continuous source of financial difficulties."

Francis Ronalds builds the first working electric telegraph.

This was the first "electric" medium for communication.

At the age of 20, Louis Braille, blind from the age of 5, and a student at l'Institut Royale des Jeunes Aveugles in Paris publishes Procede pour écrire les Paroles, la Musique et le Plain-chant au moyen de points, a l’usage des aveugles et dispose pour eux.

This large quarto volume of 4 preliminary leaves and 32 pages included the first presentation of the Braille system of printing and reading for the blind, which represents letters and numbers by combinations of six dots.

Though Braille introduced his six dot system briefly in his 1829 work, most of the Procede pour écrire was published through the traditional system of printing for the blind using raised letters that was invented by the founder of l'Institut Royale des Jeunes Aveugles, Valentin Haüy. In 1837 Braille added symbols for mathematics and music to his sic dot system.

“The Braille system was not given an immediate welcome; it was only in 1854 that it was officially accepted by the Institute itself. But at an international congress in Paris in 1878 it was adopted throughout Europe. It is now in use virtually throughout the literate world” (Carter & Muir, Printing & the Mind of Man [1967] no. 292.

Samuel F. B. Morse invents a practical form of electromagnetic telegraph using an early version of his “Morse code.” (See Reading 5.2.)

Rowland Hill circulates his pamphlet, Post Office Reform: its Importance and Practicability, in which he lays out his principles for reforming the postal system.

"The penny post inaugurated and administered by Rowland Hill required the adoption of four novel principles: (1) prepayment of postage, (2) payment by weight instead of by the number of sheets, (3) the use of envelope, (4) the use of adhesive stamps on letters. Prior to this reform, for example, the use of an envelope would have been a novelty to most letter-writers and entailed double postage." (Carter & Muir, Printing and the Mind of Man [1967] 306a).

Before Hill wrote postage was generally paid for by the recipient who had the right to refuse delivery of any mail. Hill's 

"report called for 'low and uniform rates' according to weight, rather than distance. Hill's study showed that most of the costs in the postal system were not for transport, but rather for laborious handling procedures at the origins and the destinations. Costs could be reduced dramatically if postage were prepaid by the sender, the prepayment to be proven by the use of prepaid letter sheets or adhesive stamps (adhesive stamps had long been used to show payment of taxes -- for example, on documents). Letter sheets were to be used because envelopes were not yet common -- they were not yet mass-produced, and in an era when postage was calculated partly on the basis of the number of sheets of paper used, the same sheet of paper would be folded and serve for both the message and the address. In addition, Hill proposed to lower the postage rate to a penny per half ounce, without regard to distance."

As part of the postal reforms initiated by Rowland Hill, the world's first adhesive postage stamp is distributed. With an elegant engraving of the young Queen Victoria, the Penny Black was an immediate success. The first stamps were not perforated.

Only a single example is known on cover with a postmark dated 1 May 1840.

Samuel F. B. Morse transmits the first message on a United States experimental telegraph line (Washington to Baltimore) using the “Morse code” that will become standard in the United States and Canada. The message, taken from the Bible, Numbers 23:23, and recorded on a paper tape, had been suggested to Morse by Annie Ellworth, the young daughter of a friend. It was “What hath God wrought?”

The Morse Code became the first widely used data code.

Paul Julius Reuter (originally named Israel Beer Josaphat) sets up an information service, later called Reuters, using a "fleet of 45 carrier pigeons",  to deliver news and stock prices between Brussels and Aachen, terminal points of the German and French-Belgian telegraph lines.

Reuter's pigeons carried the messages between Brussels and Aachen within two hours, beating the railroad by six hours.

Paul Julius Reuter founds the Reuters news agency in London using telegraph lines, and a fleet of carrier pigeons that grows to exceed 200.

Reuter opened an office in London’s financial center close to the main telegraph offices. He transmitted stock market quotations and news between London and Paris over the new Dover-Calais submarine telegraph cable, using his "telegraph expertise."

Johann Philipp Reis, a German schoolteacher and physicist, announces his invention of the telephone in a lecture before the Physical Society of Frankfurt. He publishes "Ueber Telephonie durch den galvanischen Strom" in Jahres-Bericht des physikalischen Vereins zu Frankfurt am Main fur des Rechungshahr 1860-1861 (1861). 

Reis' transmitter worked by alternatively making and breaking connection with a battery, while his receiver was designed to operate on the principle of magnetorestriction -- the property of ferromagnetic material such as iron to change shape on applicate of a magnetic field. Neither of these principles was adequate for constructing a successful speech-transmitting telephone, which requires continous contact and an undulating current; however,

"If the sound entering a Reis transmitter is not too strong, contact between the metal point and the metal strip will not be broken. Instead, the pressure of the former on the latter will fluctuate with the sound causing fluctuations in the electrical resistance and therefore in the current. Similarly the receiver will respond to continuously fluctuating as well as to intermittent currents (but not by magnetorestrction). The sensitivity, however, is extremely low. . . ." (Encyclopedia Brittanica, 15th edition.)

This may explain the partial but real success of Reis's telephone in transmitting intelligible speech.

Between 1858 and 1863 Reis constructed three different models of his telephone, the third and best-known of which was demonstrated to scientific societies throughout Europe and America. One of those who saw Reis's machine was Alexander Graham Bell, who was shown Reis's telephone at the Smithsonian Institution in March 1875, and who might have seen an earlier model demonstrated in Edinburgh as early as 1862.

Reis had no interest in profiting from his telephone, freely giving out information on it to anyone who asked, and selling models of it at a reasonable price. Reis died of tuberculosis in 1874 at the early age of 40.

During the four and a half months Siege of Paris in the Franco-Prussian War normal channels of communication were interrupted and the only way for the provincial government in Tours to communicate with Paris was by pigeon post.

French photographer and inventor René Dagron "proposed to the authorities to use his microfilming process to carry the messages by carrier pigeons. Rampont, the man in charge of the carrier pigeon program, agreed and a contract was signed on 11 November. According to the contract Dagron was to be paid 15 francs per 1000 characters photographed. A clause in the contract, signed by an official named Picard, gave Dagron the title of "chief of the photomicroscopic correspondence postal service" mentioning in French: 'M. Dagron a le titre de chef de service des correspondences postales photomicroscopiques. Il relève directement du Directeur Général des Postes,' which translates as 'Mr. Dagron has the title of the chief of the photomicroscopic correspondence postal service. He reports directly to the Director General of the Post Office.'

"After a period of difficulties and through hardships brought on by the war and the lack of equipment, Dagron finally achieved a photographic reduction of more than 40 diameters. The microfilms so produced weighed approximately 0.05 grams each and a pigeon was able to carry up to 20 at a time. Up to that point a page of a message could be copied in a microfilm approximately measuring 37 mm by 23 mm but Dagron was able to reduce this to a size of approximately 11 mm by 6 mm which was a significant reduction in the area of the microphotograph.

"Dagron photographed pages of newspapers in their entirety which he then converted into miniature photographs. He subsequently removed the collodion film from the glass base and rolled it tightly into a cylindrical shape which he then inserted into miniature tubes that were transported fastened on the wings of pigeons. Upon receipt the microphotograph was reattached to a glass frame and was then projected by magic lantern on the wall. The message contained in the microfilm could then be transcribed or copied. By 28 January 1871, when Paris and the Government of National Defense surrendered, Dagron had delivered 115,000 messages to Paris by carrier pigeon" (Wikipedia article on René Dagron, accessed 04-26-2009).

J. D. Hayhurst, The Pigeon Post into Paris 1870-1871 (1970) provides a comprehensive account, and reproduces a number of original documents including photomicrographs.

Alexander Graham Bell invents the telephone, and applies for the patent. In his invention of the telephone Bell was preceded by Philip Reis, who perfected his device in 1861, and numerous other inventors played lesser or greater roles. However, Bell was the first to create a telephone that could reproduce intelligible speech at the receiving end, and was also the first to patent the telephone. Because of the numerous other inventors involved there was unusually extensive and historic litigation over the telephone patents, culminating in Bell's victory. Among the controversies was the question of the priority of Elisha Gray in the invention.

As the well-known story goes, on March 10, 1876 Bell spoke the first words through the instrument to his assistant, Thomas A. Watson, in the next room. Bell said, "Mr. Watson— come here— I want to see you." (See Reading 5.3

Bell presented his first report on the telephone to the American Academy of Arts and Sciences on May 10, 1876. His report, "Researches in telephony," was published in Proceedings of the American Academy of Arts and Sciences, new series 4 (whole series 12) (1877) 1-10.  Bell's telephone did not become commercially viable until 1878.

Hook & Norman, The Haskell F. Norman Library of Science & Medicine (1991) no. 164.

Construction of the first regular telephone line is completed. It runs from Boston to Somerville, Massachusetts.

Alexander Graham Bell and his then-assistant Charles Summer Tainter transmit the first wireless telephone message 213 meters on a beam of light between the roof of the Franklin School and the window of Bell's Washington, D. C. laboratory using the photophone. 

"The photophone used crystalline selenium cells at the focal point of its parabolic receiver. This material's electrical resistance varies inversely with the illumination falling upon it, i.e., its resistance is higher when it is in the dark, and lower when it is exposed to light. The idea of the photophone was thus to modulate a light beam: the resulting varying illumination of the receiver would induce a corresponding varying resistance in the selenium cells, which were then used by a telephone to regenerate the sounds captured at the receiver. The modulation of the transmitted light beam was done by a mirror made to vibrate by a person's voice: the thin mirror would alternate between concave and convex forms, thus focusing or dispersing the light from the light source. The photophone functioned similarly to the telephone, except the photophone used light as a means of projecting information, while the telephone relied on a modulated electrical signal carried over a conductive wire circuit" (Wikipedia article on Photophone, accessed 03-27-2010).

Bell's and Tainter's invention, for which Bell received the master patent (U.S. Patent 235,199) in December 1880, was the forerunner of wireless telecommunications and the far-advanced forerunner of fiber-optic telecommunications.

According to Long & Groth, Bibliography of Early Optical (Audio) Communications (2005) Bell's first paper on the photophone, "Prof. A. G. Bell on Selenium and the Photophone," was first published in The Electrician No 5, 18 September 1880, 220-221 and 2 October 1880, 237. The complete paper also was published in Nature (London) Vol 22, 23 September 1880, 500 - 503. Thus the first complete publication appears to be the version published in Nature.

Bell's longer paper "On the Production and Reproduction of Sound by Light: the Photophone" was first published in American Assocation  for the Advancement of Science, Proceedings, Vol 29., October 1880, 115-136. This paper was widely reprinted in other journals. "In these papers, Bell accords the credit for the first demonstrations of the transmission of speech by light to a Mr A C Brown of London 'in September or October 1878' (Wikipedia article on Photophone, accessed 03-27-2010).

Death of the The Reverend Charles Lutwidge Dodgson, the English author, mathematician, logician, Anglican clergyman, and photographer, best known by his pen name, Lewis Carroll. In addition to his published writings, which included Alice in Wonderland, Dodgson maintained a meticulous ledger recording his incoming and outgoing correspondence over his lifetime. As a reflection of how many letters an individual could exchange in this era before telephone, Dodgson/Carroll wrote or received approximately 98,000 letters.

In “Certain Factors Affecting Telegraph Speed,” Bell System Technical Journal 3 (1924) 324–346, Harry Nyquist analyzes factors affecting telegraph transmission speed, presenting the first statement of a logarithmic law for communication, and the first examination of the theoretical bounds for ideal codes for the transmission of information.

Ralph V. R. Hartley publishes “Transmission of Information,” in which he proves "that the total amount of information that can be transmitted is proportional to frequency range transmitted and the time of the transmission."

Hartley's law eventually became one of the elements of  Claude Shannon's  mathematical theory of communication.

Homer Dudley and a team of engineers at Bell Labs produce the first electronic speech synthesizer, called the Voder.

The Voder was demonstrated at the 1939 World's Fair by experts who used a keyboard and foot pedals to play the machine and emit speech.

Claude Shannon writes Communication in the Presence of Noise.

Because of World War II censorship the report was not published until 1949.

"The sampling theorem was implied by the work of Harry Nyquist in 1928 ('Certain topics in telegraph transmission theory'), in which he showed that up to 2B independent pulse samples could be sent through a system of bandwidth B; but he did not explicitly consider the problem of sampling and reconstruction of continuous signals. About the same time, Karl Küpfmüller showed a similar result, and discussed the sinc-function impulse response of a band-limiting filter, via its integral, the step response Integralsinus; this bandlimiting and reconstruction filter that is so central to the sampling theorem is sometimes referred to as a Küpfmüller filter (but seldom so in English).

"The sampling theorem, essentially a dual of Nyquist's result, was proved by Claude E. Shannon in 1949 ('Communication in the presence of noise'). V. A. Kotelnikov published similar results in 1933 ('On the transmission capacity of the 'ether' and of cables in electrical communications', translation from the Russian), as did the mathematician E. T. Whittaker in 1915 ('Expansions of the Interpolation-Theory', 'Theorie der Kardinalfunktionen'), J. M. Whittaker in 1935 ('Interpolatory function theory'), and Gabor in 1946 ('Theory of communication')" (Wikipedia article on Nyquist-Shannon Sampling Theorem, accessed 01-04-2010).

Actress Hedy Lamarr and composer George Antheil invent “frequency-hopping” transmission, now called spread-spectrum.

In 1941 Lamarr patented "frequency-hopping" under her married name of H. K. Markey, and assigned the patent to the U.S. Government.

This early version of frequency hopping used a piano-roll to change between 88 frequencies, and was intended to make radio-guided torpedoes harder for enemies to detect or jam.

British science fiction writer and futurist Arthur C. Clarke publishes "Extra-Terrestrial Relays: Can Rocket Stations Give World-wide Radio Coverage?," Wireless World (October 1945) 205-308. In article Clarke envisages a group of three manned space stations arranged in a triangle around the earth, launched by versions of the German V-2 (A4) or the larger planned but not constructed German A10 intercontinental ballistic missile.

The idea of satellites in geostationary orbit was first proposed by Herman Potočnik in his 1929 book, Das Problem der Befahrung des Weltraums - der Raketen-Motor. Clarke cited this work as a reference in his 1945 paper.

Claude Shannon publishes his Mathematical Theory of Communication. The theory determined how much information could be sent per unit of time in a system with a given, limited amount of transmission power. Shannon also introduced the term "bit" into the literature, and provided its current meaning in the context of information. (See Reading 12.2.)

Richard W. Hamming publishes Error Detecting and Error Codes. (See Reading 12.3.)

According to Asa Brigg’s The History of British Broadcasting in the United Kingdom, Vol. 4, p. 524, newspaper circulation in Britain as a distribution medium for news reached its peak in 1950 and 1954. Thereafter more news was distributed over radio and television than through print.

The Soviet Union launches Sputnik, the first artificial earth satellite.

Though modems existed for teletype since the 1940s, these transmitted at speeds of about 150 bpi. To meet demands of the U.S. military, researchers at Bell Labs developed an improved modem (modulator-demodulator), using amplitude magnification to provide a way to convert digital signals to analog signals and back for transmission at speeds up to 1600 bpi over analog telephone lines.

The U. S. launches its first artificial satellite, Explorer-1, officially known as Satellite 1958 Alpha. It was built at the Jet Propulsion Lab at Caltech, and it ceased transmission on May 23 after less than 4 months.

Explorer I is credited with the most important discovery of the International Geophysical Year-- the discovery of one of the belts of radiation surrounding the earth. There were subsequently named the Van Allen Belts after James Van Allen, the scientist who identified them.

President Eisenhower's brief Christmas greeting is transmitted from the Project SCORE (Signal Communication by Orbiting Relay Equipment) satellite.

He said:

"This is the President of the United States speaking. Through the marvels of scientific advance, my voice is coming to you from a satellite traveling in outer space. My message is a simple one: Through this unique means I convey to you and all mankind, America's wish for peace on Earth and goodwill toward men everywhere."

This was the first voice transmission from the world's first communications satellite.

"Somewhat the same problem arises in communicating with a machine entity that would arise in communicating with a person of an entirely different language background than your own. A system of logical definition and translation would have to be available. In order that meanings should not be lost, such a system of translation would also need to be precise. We are all familiar with the unhappy results of language translations which are either lacking in precision or where suitable words of equivalent meaning cannot be found. Likewise, translating into a machine language cannot be anything but an exact operation. Machines even more than people must be addressed with clarity and unambiguity, for machines cannot improvise on their own or imagine that about which they have not been specifically informed, as a human might do within reasonable limits of error. . . .

"We must now ascertain how concepts are formulated within the framework of computer language. For analogy, let us first consider the manner in which instructions are usually given to a non-mechanical entity. When we instruct, for example, a human being, we are aided by the fact that the human is usually able to fill in gaps in our instructions through acumen acquired from his own past experiences. It is seldom necessary that instructions be either detailed or literal, although we may have lost sight of this fact.

"The computer in a correlate example is a mechanical 'being' which must be instructed at each and every step. But it can be given a very long list of instructions upon which it can be expected to subsequently act with great speed and accuracy and with untiring repetition. Machine traits are: low comprehension, high retention, extreme reliability, and tremendous speed. The use of superlatives here to describe these traits is not exaggerative. Since speed becomes in practice the equivalent of number, the machine might be, and has sometimes been, equated to legions — an army, if you will — of lowgrade morons whose conceptualization is entirely literal, who remember as long as is necessary or as you desire them to, whose loyalty and subservience is complete, who require no holidays, no spurious incentives, no morale programs, pensions, not even gratitude for past service, and who seemingly never tire of doing elementary repetitive tasks such as typing, accounting, bookkeeping, arithmetic, filling in forms, and the like. In about all these respects the machine may be seen to be the exact opposite of nature's loftiest creature, the intellligent human being, who becomes bored with the petty and repetitious, who is unreliable, who wanders from the task for the most trivial reasons, who gets out of humor, who forgets, who requires constant incentives and rewards, who improvises on his own even when to do so is impertinent to the objectives being undertaken, and who in summary (let's face it) is unsuitable to most forms of industry as the latter are ideally and practically conceived in our times. It becomes apparent in retrospect that the only excuse we might ever have had for employing him to do many of civilization's more literal and repetitious tasks was the absence of something more efficient with which to replace him!

"It is not the purpose of this volume to explore further the ramifications of the above statements of fact. . . ."(Nett & Hetzler, An Introduction to Electronic Data Processing [1959] 86-88).

C. Breen and D. A. Dahlbaum publish "Signaling Systems for the Control of Telephone Switching," Bell System Technical Journal, 39 (1960) 1381-1444.

"Telephone signaling is basically a matter of transferring information between machines, and between humans and machines. The techniques developed to accomplish this have evolved over the years in step with advances in the total telephone art. The history of this evolution is traced, starting from the early simple manual switchboard days to the present Direct Distance Dialing era. The effect of the increasing sophistication in automatic switching and transmission systems and their influence on signaling principles are discussed. Emphasis is given to the signaling systems used between central offices of the nationwide telephone network and the influence on such systems of the characteristics of switching systems and their information requirements, the transmission media and the compatibility problem. A review is made of the forms and characteristics of some of the interoffice signaling systems presently in use. In addition, the problem of signaling between Bell System and overseas telephone systems is reviewed with reference to delivering information requirements, signaling techniques and new transmission media. Finally, some speculation is made on the future trends of telephone signaling systems" (abstract of the paper).

According to http://www.historyofphonephreaking.org/docs.php, the Breen and Dahlbaum paper is

"often cited as the article that gave away the keys to the kingdom," leading to the development of the underground "phreaker" culture.  Other papers that included the in-band trunk signaling tones which provided the technical information needed to build Blue Boxes are cited at http://www.lospadres.info/thorg/bstj.html, accessed 09-17-2009).

My thanks to Jeffrey Odel for this reference.

Fernando J. Corbató and team at MIT develop one of the first time-sharing operating systems, CTSS (Compatible Time-Sharing System.)

CTSS had one of the first computerized text formatting utilities, called RUNOFF, the precursor of word processing, and one of the first inter-user messaging implementations, presaging instant messaging and electronic mail.

Marshall McLuhan publishes The Gutenberg Galaxy: The Making of Typographic Man in which he divides history in four epochs: oral tribe culture, manuscript culture, the Gutenberg galaxy and the electronic age.

McLuhan argued that a new communications medium was responsble for the break between each of the four time periods. Writing before computing was pervasive in society, he was concerned with the influence of radio, television and film on print culture, and on the impact of media, independent of content, upon thinking, and social organization:

"The main concept of McLuhan's argument (later elaborated upon in The Medium is the Massage) is that new technologies (like alphabets, printing presses, and even speech itself) exert a gravitational effect on cognition, which in turn affects social organization: print technology changes our perceptual habits ('visual homogenizing of experience'), which in turn impacts social interactions ('fosters a mentality that gradually resists all but a. . . specialist outlook'). According to McLuhan, the advent of print technology contributed to and made possible most of the salient trends in the Modern period in the Western world: individualism, democracy, Protestantism, capitalism, and nationalism. For McLuhan, these trends all reverberate with print technology's principle of 'segmentation of actions and functions and principle of visual quantification."

A Delta rocket from Cape Canaveral launches the AT&T TELSTAR 1 satellite. It was the first privately owned active communications satellite,  transmitting the first direct television pictures from the United States to Europe. It became the first satellite to relay signals from the earth to a satellite and back.

The first geosynchronous communications satellite, Syncom 2, is launched by NASA on a Delta rocket B booster from Cape Canaveral. "Its orbit was inclined rather than geostationary. . . The satellite successfully kept stationary at the altitude calculated by Herman Potočnik Noordung in the 1920s.

"During Syncom 2's first year, NASA conducted voice, teletype, and facsimile tests, as well as 110 public demonstrations to acquaint people with Syncom's capabilities and invite their feedback. In August 1963, President John F. Kennedy in Washington, D.C., telephoned Nigerian Prime Minister Abubakar Balewa aboard USNS Kingsport docked in Lagos Harbor; the first live two-way call between heads of state by satellite. The Kingsport acted as a control station and uplink stationa' (Wikipedia article on Syncom, accessed 05-24-2009).

The first geostationary communication satellite, Syncom 3, is launched by NASA with a Delta D #25 launch vehicle from Cape Canaveral.

"The satellite, in orbit near the International Date Line, was used to telecast the 1964 Summer Olympics in Tokyo to the United States. It was the first television program to cross the Pacific ocean" (Wikipedia article on Syncom, accessed 05-24-2009).

Though its exact history is murky, email begins as a way for users on time-sharing mainframe computers to communicate. Among the first systems to have this facility were System Development Corporation (SDC) (Q32) and MIT (CTSS).

Lawrence Roberts does the first actual network experiment, tying MIT Lincoln Labs’ TX-2 to System Development Corporation's Q32.

This was the first time that two computers talked to each other, and the first time that packets were used to communicate between computers.

The first message is sent over the ARPANET from Leonard Kleinrock’s UCLA computer to the second node at Stanford Research Institute’s computer.

The message was simply “Lo.”

Lawrence Roberts of ARPA writes the first email management program, RD, to list incoming messages and support forwarding, filing, and responding to them.

Efrem Lipkin, Mark Szpakowski, and Lee Felsenstein establish the first public computerized bulletin board system (BBS) called Community Memory in Berkeley, California.

Community Memory used hard-wired terminals in neighborhoods as distinct from the first public dial-up CBBS noticed on February 16, 1978 in this database.

"Community Memory ran off an XDS-940 timesharing computer located in Resource One in San Francisco. The first terminal was an ASR-33 Teletype at the top of the stairs leading to Leopold's Records in Berkeley. You could leave messages and attach keywords to them. Other people could then find messages by those keywords.

"The line from San Francisco to Berkeley ran at 110 baud - 10 characters per second. The teletype was noisy, so it was encased in a cardboard box, with a transparent plastic top so you could see what was being printed out, and holes for your hands so you could type. It made for some magic moments with the Allman Brothers' "Blue Sky" playing in the record store. Musicians loved it - they ended up generating a monthly printout of fusion rock bassists seeking raga lead guitars. And out of it also emerged the first net personality - Benway, as he called himself."

Atex works with the Minneapolis Star newspaper to develop the first electronic pagination system that allows the creation and output of full editorial pages, eliminating the need for manual paste-up of strips of film.

The Atex system featured "Atex Messaging" which is widely believed to be the forerunner of both email and instant messenger applications. Atex publishing systems were "based on highly modified Dec PDP-11 minicomputers, designed to produce news sections of newspapers. The systems included clustered CPUs, a distributed file system and dumb terminals that displayed memory-mapped video and featured keyboards with up to 140 keys: Distinctively, the cursor keys were on the left-hand side. A custom operating system tied everything together."

Starr Roxanne Hiltz, a sociologist, and Murray Turoff, a professor of computer science, show how "computer-mediated communication" could develop social networking in their book The Network Nation: Human Communication via Computer.

Ward Christensen founds the Computerized Bulletin Board System (CBBS), the first dial-up bulletin board system (BBS) ever brought online, as a program to allow Christensen and other hobbyists to exchange information. This was distinct from Community Memory, a BBS established in Berkeley in 1973, that used hard-wired terminals placed around the town.

"In January 1978, Chicago was hit by the Great Blizzard of 1978, which dumped record amounts of snow throughout the midwest. Among those caught in it were Christensen and Randy Suess, who were members of CACHE, the Chicago Area Computer Hobbyists' Exchange. They had met at that computer club in the mid 1970s and become friends.

"Christensen had created a file transfer protocol for sending binary computer files through modem connections, which was called, simply, MODEM. Later improvements to the program motivated a name change into the now familiar XMODEM. The success of this project encouraged further experiments. Christensen and Suess became enamored of the idea of creating a computerized answering machine and message center, which would allow members to call in with their then-new modems and leave announcements for upcoming meetings.

"However, they needed some quiet time to set aside for such a project, and the blizzard gave them that time. Christensen worked on the software and Suess cobbled together an S-100 computer to put the program on. They had a working version within two weeks, but claimed soon afterwards that it had taken four so that it wouldn't seem like a "rushed" project. Time and tradition have settled that date to be February 16, 1978.

"Because the Internet was still small and not available to most computer users, users had to dial CBBS directly using a modem. Also because the CBBS hardware and software supported only a single modem for most of its existence, users had to take turns accessing the system, each hanging up when done to let someone else have access. Despite these limitations, the system was seen as very useful, and ran for many years and inspired the creation of many other bulletin board systems.

"Ward & Randy would often watch the users while they were online and comment or go into chat if the subject warranted. Sometime online users wondered if Ward & Randy actually existed.

"The program had many forward thinking ideas, now accepted as canon in the creation of message bases or "forums" (Wikipedia article on CBBS, accessed 04-27-2009).

The Federal Communications Commission authorizes American Telephone and Telegraph to build a commercial cellular telephone service in Chicago.

This was the beginning of commercial cellular service in the United States.

Integrational linguist Roy Harris publishes The Language Machine.

"This volume completes the trilogy which began with The Language-Makers (1980) and The Language Myth (1981). The Language Machine examines the impact of the electronic computer on modern conceptions of language and communication. When Swift wrote Gulliver’s Travels the notion that a machine could handle language was an absurdity to be satirized. Descartes regarded it as foolish to suppose that a robot could ever be built that would answer questions. But today it is widely assumed that mechanical speech recognition and automatic translation will be commonplace in tomorrow’s technology. Underlying these assumptions is a subtle shift in popular and academic conceptions of what a language is. Understanding a sentence is treated as a computational process. This in turn contributes powerfully to accepting a mechanistic view of human intelligence, and to the insulation of language from moral values" (http://www.royharrisonline.com/linguistic_publications/The_Language-machine.html, accessed 07-23-2010).

Lotus introduces Lotus Notes developed by Ray Ozzie at Iris Associates.

Notes was the first commercial networked-based communications and collaboration, or groupware, program. Ozzie derived the Notes concept from his experience working with PLATO Notes at the Computer-based Education Research Laboratory (CERL) at the University of Illinois at Urbana-Champaign. [PLATO Notes is noticed in this database.]

The first gateways between private e-mail carriers and the Internet are established. CompuServe is connected through Ohio State University, MCI through the Corporation for National Research Initiatives.

Using a personal computer, Neil Papworth of Sema Group  sends the first commercial SMS  text message to Richard Jarvis of Vodafone, using an Orbitel 901 handset. The text of the message is "Merry Christmas."

"In 1993, Dr. Glen Barry invented blogging, defined as web based commentary, linking to other articles. The "Forest Protection Blog" (originally entitled "Gaia's Forest Conservation Archives") at http://forests.org/blog/ was also the first political blog, as Dr. Barry campaigned there for forest protection and documented these efforts as his Ph.D. project. The first blog initially used the gopher protocol, and has been on the web continuously since Jan. 1995, making it the web's first and longest continuously running blog. Prior to this, Dr. Barry provided forest conservation materials via email and bulletin board since 1989. The work has since evolved into the world's largest environmental portals at http://www.ecoearth.info/" (Wikipedia article on History of blogging timeline, accessed 04-21-2009).

This year more email is sent than paper mail.

The average person receives 733 pieces of mail on paper per year, half of which is junk mail.

The Internet Society (ISOC) meets to discuss the growing spam problem.

Diana Hook and the author/editor of this database, Jeremy Norman, issue as a limited edition an annotated, descriptive bibliography entitled Origins of Cyberspace: A Library on the History of Computing, Networking, and Telecommunications. It was the first annotated descriptive bibliography on these subjects.

"The CAN-SPAM Act of 2003 (15 U.S.C. 7701, et seq., Public Law No. 108-187, was S.877 of the 108th United States Congress), signed into law by President George W. Bush establishes the United States' first national standards for the sending of commercial e-mail and requires the Federal Trade Commission (FTC) to enforce its provisions.

"The acronym CAN-SPAM derives from the bill's full name: Controlling the Assault of Non-Solicited Pornography And Marketing Act of 2003. This is also a play on the usual term for unsolicited email of this type, spam. The bill was sponsored in Congress by Senators Conrad Burns and Ron Wyden.

"The CAN-SPAM Act is commonly referred to as the "You-Can-Spam" Act because the bill explicitly legalizes most e-mail spam. In particular, it does not require e-mailers to get permission before they send marketing messages. It also prevents states from enacting stronger anti-spam protections, and prohibits individuals who receive spam from suing spammers. The Act has been largely unenforced, despite a letter to the FTC from Senator Burns, who noted that "Enforcement is key regarding the CAN-SPAM legislation." In 2004 less than 1% of spam complied with the CAN-SPAM Act of 2003.

"The law required the FTC to report back to Congress within 24 months of the effectiveness of the act.[4] No changes were recommended. It also requires the FTC to promulgate rules to shield consumers from unwanted mobile phone spam. On December 20, 2005 the FTC reported that the volume of spam has begun to level off, and due to enhanced anti-spam technologies, less was reaching consumer inboxes. A significant decrease in sexually-explicit e-mail was also reported.

"Later modifications changed the original CAN-SPAM Act of 2003 by (1) Adding a definition of the term "person"; (2) Modifying the term "sender"; (3) Clarifying that a sender may comply with the act by including a post office box or private mailbox and (4) Clarifying that to submit a valid opt-out request, a recipient cannot be required to pay a fee, provide information other than his or her email address and opt-out preferences, or take any other steps other than sending a reply email message or visiting a single page on an Internet website" (Wikipedia article on CAN-SPAM Act of 2003, accessed 01-19-2010).

Bob Stein, pioneering commercial multi-media publisher and co-founder of the Voyager Company and The Criterion Collection, co-founds The Institute for the Future of the Book.

Anthropologists Gary Urton and Carrie Brezine publish "Khipu Accounting in Ancient Peru," Science 309 (2005) 1065 - 1067.

"Khipu [quipu] are knotted-string devices that were used for bureaucratic recording and communication in the Inka [Inca] Empire. We recently undertook a computer analysis of 21 khipu from the Inka administrative center of Puruchuco, on the central coast of Peru. Results indicate that this khipu archive exemplifies the way in which census and tribute data were synthesized, manipulated, and transferred between different accounting levels in the Inka administrative system" (Science).

"Researchers in the US believe they have come closer to solving a centuries-old mystery - by deciphering knotted string used by the ancient Incas.

"Experts say one bunch of knots appears to identify a city, marking the first intelligible word from the extinct South American civilisation.

"The coloured, knotted pieces of string,known as khipu, are believed to have been used for accounting information.

"The researchers say the finding could unlock the meaning of other khipu.

"Harvard University researchers Gary Urton and Carrie Brezine used computers to analyse 21 khipu.

"They found a three-knot pattern in some of the strings which they believe identifies the bunch as coming from the city of Puruchuco, the site of an Inca palace.

" 'We hypothesize that the arrangement of three figure-eight knots at the start of these khipu represented the place identifier, or toponym, Puruchuco,' they wrote in their report, published in the journal Science.

" 'We suggest that any khipu moving within the state administrative system bearing an initial arrangement of three figure-eight knots would have been immediately recognisable to Inca administrators as an account pertaining to the palace of Puruchuco.' (http://news.bbc.co.uk/2/hi/americas/4143968.stm, accessed 04-28-2009).

The Chairman of Cisco systems, John Chambers, compares telepresence to teleporting in Star Trek, and says it will be potentially a billion dollar market.

The start-up company Obvious launches the social networking and micro-blogging service Twitter: What are you doing?. Twitter "allows its users to send and read other users' updates (otherwise known as tweets), which are text-based posts of up to 140 characters in length." This is under the 160 character limit of the SMS communication protocol for mobile phones.

The day after the presdidential election President-Elect Barack Obama launches the website, Change.gov to communicate details of the transition to the presidency.

"A WOMAN in a deep sleep sent emails to friends asking them over for wine and caviar in what doctors believe is the first reported case of 'zzz-mailing' - using the internet while asleep.

"The case of the 44-year-old woman is reported by researchers from the University of Toledo in the latest edition of the medical journal Sleep Medicine.

"They said the woman went to bed about 10pm but got up two hours later and walked to her computer in the next room, Britain's Daily Mail newspaper reports.

"She turned it on, connected to the internet, and logged on before composing and sending three emails.

"Each was in a random mix of upper and lower cases, not well formatted and written in strange language, the researchers said.

"One read: "Come tomorrow and sort this hell hole out. Dinner and drinks, 4pm,. Bring wine and caviar only."

"Another said simply, "What the…".

"The new variation of sleepwalking has been described as "zzz-mailing".

"We believe writing an email after turning the computer on, connecting to the internet and remembering the password displayed by our patient is novel," the researchers said.

"To our knowledge this type of complex behaviour requiring co-ordinated movements has not been reported before in sleepwalking" (http://www.news.com.au/technology/story/0,28348,24802639-5014239,00.html, accessed 12-30-2008)

At the Google IO Developers Conference in San Francisco Google demonstrates Google Wave, "an ambitious, if incomplete, attempt to reinvent email and Internet communication in general" developed by Lars and Jens Rasmussen, who previously developed Google Maps.  The opensource program will be available to developers worldwide.

The Google Wave demonstration is available on a 1.5 hour video available on YouTube. When I accessed the video on June 1, 2009 it had already been downloaded 1,173,600 times and had already received 3,225 ratings.

"At one time, authoritarian regimes could draw a shroud around the events in their countries by simply snipping the long-distance phone lines and restricting a few foreigners. But this is the new arena of censorship in the 21st century, a world where cellphone cameras, Twitter accounts and all the trappings of the World Wide Web have changed the ancient calculus of how much power governments actually have to sequester their nations from the eyes of the world and make it difficult for their own people to gather, dissent and rebel.

"Iran’s sometimes faltering attempts to come to grips with this new reality are providing a laboratory for what can and cannot be done in this new media age — and providing lessons to other governments, watching with calculated interest from afar, about what they may be able to get away with should their own citizens take to the streets.

"One early lesson is that it is easier for Iranian authorities to limit images and information within their own country than it is to stop them from spreading rapidly to the outside world. While Iran has severely restricted Internet access, a loose worldwide network of sympathizers has risen up to help keep activists and spontaneous filmmakers connected.

"The pervasiveness of the Web makes censorship 'a much more complicated job,' said John Palfrey, a co-director of Harvard’s Berkman Center for Internet and Society.

"The Berkman Center estimates that about three dozen governments — as widely disparate as China, Cuba and Uzbekistan — extensively control their citizens’ access to the Internet. Of those, Iran is one of the most aggressive. Mr. Palfrey said the trend during this decade has been toward more, not less, censorship. 'It’s almost impossible for the censor to win in an Internet world, but they’re putting up a good fight,' he said.

"Since the advent of the digital age, governments and rebels have dueled over attempts to censor communications. Text messaging was used to rally supporters in a popular political uprising in Ukraine in 2004 and to threaten activists in Belarus in 2006. When Myanmar sought to silence demonstrators in 2007, it switched off the country’s Internet network for six weeks. Earlier this month, China blocked sites like YouTube to coincide with the 20th anniversary of the Tiananmen Square crackdown.

"In Iran, the censorship has been more sophisticated, amounting to an extraordinary cyberduel. It feels at times as if communications within the country are being strained through a sieve, as the government slows down Web access and uses the latest spying technology to pinpoint opponents. But at least in limited ways, users are still able to send Twitter messages, or tweets, and transmit video to one another and to a world of online spectators.

"Because of the determination of those users, hundreds of amateur videos from Tehran and other cities have been uploaded to YouTube in recent days, providing television networks with hours of raw — but unverified — video from the protests. 

"The Internet has 'certainly broken 30 years of state control over what is seen and is unseen, what is visible versus invisible,'  said Navtej Dhillon, an analyst with the Brookings Institution" (http://www.nytimes.com/2009/06/23/world/middleeast/23censor.html?hp).

After the disastrous earthquake in Haiti you could send aid money by text message on your cell phone, and $10 was put on your cell phone bill. In the case of the Red Cross you could "send a $10 Donation by Texting ‘Haiti’ to 90999", or you could donate by phone or by credit card on the Red Cross website, or through social networking sites.

Steve Jobs of Apple introduces the iPad, one-half inch thick, with a 9.7 inch, high resolution color touchscreen (multi-touch) diagonal display, powered by a 1-gigahertz Apple A4 chip and 16 to 64 gigabytes of flash storage, weighing 1.5 pounds and capable of running all iPhone applications, except presumably, the phone. The battery life is supposed to be 10 hours, and the device is supposed to hold a charge for 1 month in standby. The price starts at $499.00.

"The new device will have to be far better than the laptop and smartphone at doing important things: browsing the Web, doing e-mail, enjoying and sharing photographs, watching videos, enjoying your music collection, playing games, reading e-books. Otherwise, 'it has no reason for being.'" (http://bits.blogs.nytimes.com/2010/01/27/live-blogging-the-apple-product-announcement/?hp, accessed 01-27-2010).

Link to iPad on Apple website: http://www.apple.com/ipad/

According to The New York Times, people are now using their cell phones more for text messaging and data-processing than for speech. This should not come as a surprise to anyone with teen-age children.

". . . although almost 90 percent of households in the United States now have a cellphone, the growth in voice minutes used by consumers has stagnated, according to government and industry data.  

"This is true even though more households each year are disconnecting their landlines in favor of cellphones.  

"Instead of talking on their cellphones, people are making use of all the extras that iPhones, BlackBerrys and other smartphones were also designed to do — browse the Web, listen to music, watch television, play games and send e-mail and text messages.  

"The number of text messages sent per user increased by nearly 50 percent nationwide last year, according to the CTIA, the wireless industry association. And for the first time in the United States, the amount of data in text, e-mail messages, streaming video, music and other services on mobile devices in 2009 surpassed the amount of voice data in cellphone calls, industry executives and analysts say. 'Originally, talking was the only cellphone application,' said Dan Hesse, chief executive of Sprint Nextel. 'But now it’s less than half of the traffic on mobile networks.'  

"Of course, talking on the cellphone isn’t disappearing entirely. 'Anytime something is sensitive or is something I don’t want to be forwarded, I pick up the phone rather than put it into a tweet or a text,' said Kristen Kulinowski, a 41-year-old chemistry teacher in Houston. And calling is cheaper than ever because of fierce competition among rival wireless networks.  

"But figures from the CTIA show that over the last two years, the average number of voice minutes per user in the United States has fallen (http://www.nytimes.com/2010/05/14/technology/personaltech/14talk.html?hp, accessed 05-14-2010).

"The volume of data on the world’s mobile networks is doubling each year, according to Cisco Systems, the U.S. maker of routers and networking equipment. By 2014, it estimates, the monthly data flow will increase about sixteenfold, to 3.6 billion gigabytes from 220.1 million" (http://www.nytimes.com/2010/08/02/technology/02iht-NETPIPE02.html?src=un&feedurl=http://json8.nytimes.com/pages/business/global/index.jsonp, accessed 08-01-2010)