Tyler Cowen has a principle for judging books:
I go to Mary Riley Styles Falls Church Public Library and check the non-fiction Return carts, to see what other people have been reading.
I skip nearly all books by politicians, executives, and similar people. Even when people tell me that one is good, it usually isn’t.
Someone I know read, for an entire summer, only the books that were left outside on the sidewalks of Brooklyn streets. I once read only books that others recommended to me. Constraints reveal.