Food For Thought

I just started reading His Master's Voice by Stanislaw Lem. I came across an interesting question posed by the narrator;

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 imposters, 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 that shouts the loudest, even when the most falsely?