The basic problem of democracy, he wrote, was the accuracy of news and protection of sources. He argued that distorted information was inherent in the human mind. People make up their minds before they define the facts, while the ideal would be to gather and analyze the facts before reaching conclusions. By seeing first, he argued, it is possible to sanitize polluted information. Lippmann argued that interpretation as stereotypes (a word which he coined in that specific meaning) subjected us to partial truths. Lippmann called the notion of a public competent to direct public affairs a "false ideal." He compared the political savvy of an average man to a theater-goer walking into a play in the middle of the third act and leaving before the last curtain.
via the Wikipedia page for Walt Lippmann, author ofLiberty and the News, and other things