Walter Lippmann, for example, wrote in 1920:
“There can be no liberty for a community which lacks the means by which to detect lies.”
For all of his pessimism about the possibilities of restoring an eighteenth- and nineteenth-century level of public discourse,
Lippmann assumed, as did Thomas Jefferson before him, that with a well-trained press functioning as a lie-detector, the public’s interest in a President’s mangling of the truth would be piqued, in both senses of that word. Given the means to detect lies, he believed, the public could not be indifferent to their consequences.
Amusing Ourselves to Death