Do most people care that much about particular beliefs? Most of us recognize that the world changes, and more information becomes available, and we update our b

Do most people care that much about particular beliefs? Most of us recognize that the world changes, and more information becomes available, and we update our brains on an hourly basis. It's only really a problem for "single-issue fanatics" or extremists or whatever: those people who stake so much of their intellectual, emotional and sometimes financial capital on a particular point of view that they have to defend it regardless of the facts. Creationists, for example.