I'm just finishing up Steven Weinberg's "The First Three Minutes" and I noted with some bemusement that in the middle of page 119 he has the following statement: "The great thing is not to be free of theoretical prejudices, but to have the right theoretical prejudices." [bolding is mine, not his] Now it seem to me pretty clear that the problem here is that one is likely BY DEFINITION to think that ones theoretical prejudices ARE the "right" ones. That's sort of part of the definition of prejudice isn't it; something that ones just KNOWS is right whether it fits the facts or not. Do other theoretical physicists share this point of view, that anyone knows of? It seems to me that this is a wrongheaded approach, but Weinberg is no slouch so maybe I'm missing something in all this. Comments?