the nineteenth-century British essayist Walter Bagehot,18 One of the greatest pains to human nature is the pain of a new idea. But more of his quote tells it all: It is, as common people say, so “upsetting;” it makes you think that, after all, your favourite notions may be wrong, your firmest beliefs ill-founded…. Naturally, therefore, common men hate a new idea, and are disposed more or less to ill-treat the original man who brings it.