What do you do about people who have silly or offensive opinions and who haven’t bothered to submit to the rigors of public checking? Ignore them. Silence is science’s most effective weapon. Any writer or scientist will tell you that he would rather be attacked than ignored. When someone says that the Holocaust didn’t happen, why flatter him with attention? The world is always full of people who hold silly or obnoxious opinions and who have the means to broadcast them. That will never change. One of liberal science’s great discoveries is that, provided such people are forbidden to use
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