Media fulfills several basic roles in our society. One obvious role is entertainment. Media can act as a springboard for our imaginations, a source of fantasy, and an outlet for escapism. In the 19th century, Victorian readers disillusioned by the grimness of the Industrial Revolution found themselves drawn into fantastic worlds of fairies and other fictitious beings. In the first decade of the 21st century, American television viewers could peek in on a conflicted Texas high school football team in Friday Night Lights; the violence-plagued drug trade in Baltimore in The Wire; a 1960s-Manhattan ad agency in Mad Men; or the last surviving band of humans in a distant, miserable future in Battlestar Galactica. Through bringing us stories of all kinds, media has the power to take us away from ourselves.

Media can also provide information and education. Information can come in many forms, and it may sometimes be difficult to separate from entertainment. Today, newspapers and news-oriented television and radio programs make available stories from across the globe, allowing readers or viewers in London to access voices and videos from Baghdad, Tokyo, or Buenos Aires. Books and magazines provide a more in-depth look at a wide range of subjects. The free online encyclopedia Wikipedia has articles on topics from presidential nicknames to child prodigies to tongue twisters in various languages. The Massachusetts Institute of Technology (MIT) has posted free lecture notes, exams, and audio and video recordings of classes on its OpenCourseWare website, allowing anyone with an Internet connection access to world-class professors.

Another useful aspect of media is its ability to act as a public forum for the discussion of important issues. In newspapers or other periodicals, letters to the editor allow readers to respond to journalists or to voice their opinions on the issues of the day. These letters were an important part of U.S. newspapers even when the nation was a British colony, and they have served as a means of public discourse ever since. The Internet is a fundamentally democratic medium that allows everyone who can get online the ability to express their opinions through, for example, blogging or podcasting—though whether anyone will hear is another question.

Similarly, media can be used to monitor government, business, and other institutions. Upton Sinclair’s 1906 novel The Jungle exposed the miserable conditions in the turn-of-the-century meatpacking industry; and in the early 1970s, Washington Post reporters Bob Woodward and Carl Bernstein uncovered evidence of the Watergate break-in and subsequent cover-up, which eventually led to the resignation of President Richard Nixon. But purveyors of mass media may be beholden to particular agendas because of political slant, advertising funds, or ideological bias, thus constraining their ability to act as a watchdog. The following are some of these agendas:

1. Entertaining and providing an outlet for the imagination
2. Educating and informing
3. Serving as a public forum for the discussion of important issues
4. Acting as a watchdog for government, business, and other institutions

It’s important to remember, though, that not all media are created equal. While some forms of mass communication are better suited to entertainment, others make more sense as a venue for spreading information. In terms of print media, books are durable and able to contain lots of information, but are relatively slow and expensive to produce; in contrast, newspapers are comparatively cheaper and quicker to create, making them a better medium for the quick turnover of daily news. Television provides vastly more visual information than radio and is more dynamic than a static printed page; it can also be used to broadcast live events to a nationwide audience, as in the annual State of the Union address given by the U.S. president. However, it is also a one-way medium—that is, it allows for very little direct person-to-person communication. In contrast, the Internet encourages public discussion of issues and allows nearly everyone who wants a voice to have one. However, the Internet is also largely unmoderated. Users may have to wade through thousands of inane comments or misinformed amateur opinions to find quality information.

The 1960s media theorist Marshall McLuhan took these ideas one step further, famously coining the phrase “the medium is the message (McLuhan, 1964).” By this, McLuhan meant that every medium delivers information in a different way and that content is fundamentally shaped by the medium of transmission. For example, although television news has the advantage of offering video and live coverage, making a story come alive more vividly, it is also a faster-paced medium. That means more stories get covered in less depth. A story told on television will probably be flashier, less in-depth, and with less context than the same story covered in a monthly magazine; therefore, people who get the majority of their news from television may have a particular view of the world shaped not by the content of what they watch but its medium. Or, as computer scientist Alan Kay put it, “Each medium has a special way of representing ideas that emphasize particular ways of thinking and de-emphasize others (Kay, 1994).” Kay was writing in 1994, when the Internet was just transitioning from an academic research network to an open public system. A decade and a half later, with the Internet firmly ensconced in our daily lives, McLuhan’s intellectual descendants are the media analysts who claim that the Internet is making us better at associative thinking, or more democratic, or shallower. But McLuhan’s claims don’t leave much space for individual autonomy or resistance. In an essay about television’s effects on contemporary fiction, writer David Foster Wallace scoffed at the “reactionaries who regard TV as some malignancy visited on an innocent populace, sapping IQs and compromising SAT scores while we all sit there on ever fatter bottoms with little mesmerized spirals revolving in our eyes…. Treating television as evil is just as reductive and silly as treating it like a toaster with pictures (Wallace, 1997).” Nonetheless, media messages and technologies affect us in countless ways, some of which probably won’t be sorted out until long in the future.

A Brief History of Mass Media and Culture

Until Johannes Gutenberg’s 15th-century invention of the movable type printing press, books were painstakingly handwritten and no two copies were exactly the same. The printing press made the mass production of print media possible. Not only was it much cheaper to produce written material, but new transportation technologies also made it easier for texts to reach a wide audience. It’s hard to overstate the importance of Gutenberg’s invention, which helped usher in massive cultural movements like the European Renaissance and the Protestant Reformation. In 1810, another German printer, Friedrich Koenig, pushed media production even further when he essentially hooked the steam engine up to a printing press, enabling the industrialization of printed media. In 1800, a hand-operated printing press could produce about 480 pages per hour; Koenig’s machine more than doubled this rate. (By the 1930s, many printing presses could publish 3,000 pages an hour.)

This increased efficiency went hand in hand with the rise of the daily newspaper. The newspaper was the perfect medium for the increasingly urbanized Americans of the 19th century, who could no longer get their local news merely through gossip and word of mouth. These Americans were living in unfamiliar territory, and newspapers and other media helped them negotiate the rapidly changing world. The Industrial Revolution meant that some people had more leisure time and more money, and media helped them figure out how to spend both. Media theorist Benedict Anderson has argued that newspapers also helped forge a sense of national identity by treating readers across the country as part of one unified community (Anderson, 1991).

In the 1830s, the major daily newspapers faced a new threat from the rise of penny papers, which were low-priced broadsheets that served as a cheaper, more sensational daily news source. They favored news of murder and adventure over the dry political news of the day. While newspapers catered to a wealthier, more educated audience, the penny press attempted to reach a wide swath of readers through cheap prices and entertaining (often scandalous) stories. The penny press can be seen as the forerunner to today’s gossip-hungry tabloids.

In the early decades of the 20th century, the first major nonprint form of mass media—radio—exploded in popularity. Radios, which were less expensive than telephones and widely available by the 1920s, had the unprecedented ability of allowing huge numbers of people to listen to the same event at the same time. In 1924, Calvin Coolidge’s preelection speech reached more than 20 million people. Radio was a boon for advertisers, who now had access to a large and captive audience. An early advertising consultant claimed that the early days of radio were “a glorious opportunity for the advertising man to spread his sales propaganda” because of “a countless audience, sympathetic, pleasure seeking, enthusiastic, curious, interested, approachable in the privacy of their homes (Briggs & Burke, 2005).” The reach of radio also meant that the medium was able to downplay regional differences and encourage a unified sense of the American lifestyle—a lifestyle that was increasingly driven and defined by consumer purchases. “Americans in the 1920s were the first to wear ready-made, exact-size clothing…to play electric phonographs, to use electric vacuum cleaners, to listen to commercial radio broadcasts, and to drink fresh orange juice year round (Mintz, 2007).” This boom in consumerism put its stamp on the 1920s and also helped contribute to the Great Depression of the 1930s (Library of Congress). The consumerist impulse drove production to unprecedented levels, but when the Depression began and consumer demand dropped dramatically, the surplus of production helped further deepen the economic crisis, as more goods were being produced than could be sold.

The post–World War II era in the United States was marked by prosperity, and by the introduction of a seductive new form of mass communication: television. In 1946, about 17,000 televisions existed in the United States; within 7 years, two-thirds of American households owned at least one set. As the United States’ gross national product (GNP) doubled in the 1950s, and again in the 1960s, the American home became firmly ensconced as a consumer unit; along with a television, the typical U.S. household owned a car and a house in the suburbs, all of which contributed to the nation’s thriving consumer-based economy (Briggs & Burke, 2005). Broadcast television was the dominant form of mass media, and the three major networks controlled more than 90 percent of the news programs, live events, and sitcoms viewed by Americans. Some social critics argued that television was fostering a homogenous, conformist culture by reinforcing ideas about what “normal” American life looked like. But television also contributed to the counterculture of the 1960s. The Vietnam War was the nation’s first televised military conflict, and nightly images of war footage and war protesters helped intensify the nation’s internal conflicts.

Broadcast technology, including radio and television, had such a hold on the American imagination that newspapers and other print media found themselves having to adapt to the new media landscape. Print media was more durable and easily archived, and it allowed users more flexibility in terms of time—once a person had purchased a magazine, he or she could read it whenever and wherever. Broadcast media, in contrast, usually aired programs on a fixed schedule, which allowed it to both provide a sense of immediacy and fleetingness. Until the advent of digital video recorders in the late 1990s, it was impossible to pause and rewind a live television broadcast.

The media world faced drastic changes once again in the 1980s and 1990s with the spread of cable television. During the early decades of television, viewers had a limited number of channels to choose from—one reason for the charges of homogeneity. In 1975, the three major networks accounted for 93 percent of all television viewing. By 2004, however, this share had dropped to 28.4 percent of total viewing, thanks to the spread of cable television. Cable providers allowed viewers a wide menu of choices, including channels specifically tailored to people who wanted to watch only golf, classic films, sermons, or videos of sharks. Still, until the mid-1990s, television was dominated by the three large networks. The Telecommunications Act of 1996, an attempt to foster competition by deregulating the industry, actually resulted in many mergers and buyouts that left most of the control of the broadcast spectrum in the hands of a few large corporations. In 2003, the Federal Communications Commission (FCC) loosened regulation even further, allowing a single company to own 45 percent of a single market (up from 25 percent in 1982).

Technological Transitions Shape Media Industries

New media technologies both spring from and cause social changes. For this reason, it can be difficult to neatly sort the evolution of media into clear causes and effects. Did radio fuel the consumerist boom of the 1920s, or did the radio become wildly popular because it appealed to a society that was already exploring consumerist tendencies? Probably a little bit of both. Technological innovations such as the steam engine, electricity, wireless communication, and the Internet have all had lasting and significant effects on American culture. As media historians Asa Briggs and Peter Burke note, every crucial invention came with “a change in historical perspectives.” Electricity altered the way people thought about time because work and play were no longer dependent on the daily rhythms of sunrise and sunset; wireless communication collapsed distance; the Internet revolutionized the way we store and retrieve information.

The contemporary media age can trace its origins back to the electrical telegraph, patented in the United States by Samuel Morse in 1837. Thanks to the telegraph, communication was no longer linked to the physical transportation of messages; it didn’t matter whether a message needed to travel 5 or 500 miles. Suddenly, information from distant places was nearly as accessible as local news, as telegraph lines began to stretch across the globe, making their own kind of World Wide Web. In this way, the telegraph acted as the precursor to much of the technology that followed, including the telephone, radio, television, and Internet. When the first transatlantic cable was laid in 1858, allowing nearly instantaneous communication from the United States to Europe, the London Times described it as “the greatest discovery since that of Columbus, a vast enlargement…given to the sphere of human activity.”

Not long afterward, wireless communication (which eventually led to the development of radio, television, and other broadcast media) emerged as an extension of telegraph technology. Although many 19th-century inventors, including Nikola Tesla, were involved in early wireless experiments, it was Italian-born Guglielmo Marconi who is recognized as the developer of the first practical wireless radio system. Many people were fascinated by this new invention. Early radio was used for military communication, but soon the technology entered the home. The burgeoning interest in radio inspired hundreds of applications for broadcasting licenses from newspapers and other news outlets, retail stores, schools, and even cities. In the 1920s, large media networks—including the National Broadcasting Company (NBC) and the Columbia Broadcasting System (CBS)—were launched, and they soon began to dominate the airwaves. In 1926, they owned 6.4 percent of U.S. broadcasting stations; by 1931, that number had risen to 30 percent.

In addition to the breakthroughs in audio broadcasting, inventors in the 1800s made significant advances in visual media. The 19th-century development of photographic technologies would lead to the later innovations of cinema and television. As with wireless technology, several inventors independently created a form of photography at the same time, among them the French inventors Joseph Niépce and Louis Daguerre and the British scientist William Henry Fox Talbot. In the United States, George Eastman developed the Kodak camera in 1888, anticipating that Americans would welcome an inexpensive, easy-to-use camera into their homes as they had with the radio and telephone. Moving pictures were first seen around the turn of the century, with the first U.S. projection-hall opening in Pittsburgh in 1905. By the 1920s, Hollywood had already created its first stars, most notably Charlie Chaplin; by the end of the 1930s, Americans were watching color films with full sound, including Gone With the Wind and The Wizard of Oz.

Television—which consists of an image being converted to electrical impulses, transmitted through wires or radio waves, and then reconverted into images—existed before World War II, but gained mainstream popularity in the 1950s. In 1947, there were 178,000 television sets made in the United States; 5 years later, 15 million were made. Radio, cinema, and live theater declined because the new medium allowed viewers to be entertained with sound and moving pictures in their homes. In the United States, competing commercial stations (including the radio powerhouses of CBS and NBC) meant that commercial-driven programming dominated. In Great Britain, the government managed broadcasting through the British Broadcasting Corporation (BBC). Funding was driven by licensing fees instead of advertisements. In contrast to the U.S. system, the BBC strictly regulated the length and character of commercials that could be aired. However, U.S. television (and its increasingly powerful networks) still dominated. By the beginning of 1955, there were around 36 million television sets in the United States, but only 4.8 million in all of Europe. Important national events, broadcast live for the first time, were an impetus for consumers to buy sets so they could witness the spectacle; both England and Japan saw a boom in sales before important royal weddings in the 1950s.

In 1969, management consultant Peter Drucker predicted that the next major technological innovation would be an electronic appliance that would revolutionize the way people lived just as thoroughly as Thomas Edison’s light bulb had. This appliance would sell for less than a television set and be “capable of being plugged in wherever there is electricity and giving immediate access to all the information needed for school work from first grade through college.” Although Drucker may have underestimated the cost of this hypothetical machine, he was prescient about the effect these machines—personal computers—and the Internet would have on education, social relationships, and the culture at large. The inventions of random access memory (RAM) chips and microprocessors in the 1970s were important steps to the Internet age. As Briggs and Burke note, these advances meant that “hundreds of thousands of components could be carried on a microprocessor.” The reduction of many different kinds of content to digitally stored information meant that “print, film, recording, radio and television and all forms of telecommunications [were] now being thought of increasingly as part of one complex.” This process, also known as convergence, is a force that’s affecting media today.