The digital era also brought about a shift in the models that media researchers have
used over the years to explain how media messages and meanings are constructed
and communicated in everyday life. One older and outdated explanation of how
media operate viewed mass communication as a linear process of producing and
delivering messages to large audiences. According to this model, senders (authors,
producers, and organizations) transmitted messages (programs, texts, images, sounds,
and ads) through a mass media channel (newspapers, books, magazines, radio,
television, or the Internet) to large groups of receivers (readers, viewers, and
consumers). In the process, gatekeepers (news editors, executive producers, and other
media managers) functioned as message filters. Media gatekeepers made decisions
about what messages actually got produced for particular receivers. The process also
allowed for feedback, in which citizens and consumers, if they chose, returned
messages to senders or gatekeepers through phone calls, e-mail, web postings, talk
shows, or letters to the editor.
But the problem with the linear model was that in reality, media messages—
especially in the digital era—do not usually move smoothly from a sender at point A
to a receiver at point Z. Words and images are more likely to spill into one another,
crisscrossing in the daily media deluge of product ads, TV shows, news reports,
social media, smartphone apps, and everyday conversation. Media messages and
stories are encoded and sent in written and visual forms, but senders often have very
little control over how their intended messages are decoded or whether the messages
are ignored or misread by readers and viewers.