Abstract

Your mother was wise to teach you that just because everybody’s doing it, that doesn’t make it right. She would have been wise to add that just because everybody thinks it, that doesn’t make it right, either. On the other hand, she would not have been wise to add (and probably did not) that when everybody agrees, that is no evidence whatsoever. When nearly everybody believes something, that’s a reason in its favor. . . . I shall look at a hard case, where I claim radical change is needed, but popular opinion is against me.