Literature, from the very beginning, has had a single enemy, and that is
the restriction of the expressed idea. It turns out, however, that
freedom of expression sometimes presents a greater threat to an idea,
because forbidden thoughts may circulate in secret, but what can be done
when an important fact is lost in a flood of impostors, and the voice of
truth becomes drowned out in an ungodly din? When that voice, though
freely resounding, cannot be heard, because the technologies of
information have led to a situation in which one can receive best the
message of him who shouts the loudest, even when the most falsely?
-- Stanislaw Lem. His Master's Voice. (novel, 1968)