I think the problem is that it's logistically impossible to empirically test all your working hypotheses. For example, my working hypothesis is that Darwinian e

I think the problem is that it's logistically impossible to empirically test all your working hypotheses. For example, my working hypothesis is that Darwinian evolution is a true theory about the development of life on this planet. But as I'm not a biologist, I don't really have the skills to empirically test my hypothesis; I just trust that other people have done this and are doing a good job. Similarly, I believe reports that there are as many as 10^22 stars in the universe, but I won't test that either because I'm not an astronomer and I generally trust astronomers... In other words, I think there is an intermediate category that deserves attention: 1) Beliefs that you refuse to revise 2) Beliefs that you could revise in theory but probably never will in practice (for lack of expertise, resources, etc) 3) Beliefs that you actively try to develop We are limited in our beliefs by our material capacities for inquiry, sadly.