Discussions of censorship often operate from the assumption that the main motivation of censors is the suppression of dissent. For that reason, critiques of censorship often attack the idea of suppression: Censorship is often counterproductive and only makes samizdat material more popular. And if an idea is systematically censored, we can never really be sure that it’s wrong, since we’ll never see a full and honest accounting of the evidence for and against it. These are good arguments against suppression, and there are plenty more where they come from.