Or are you just deciding in advance that all books about business are just worthless fluff? That's probably closest to what I think. "Worthless fluff" is a lit

Or are you just deciding in advance that all books about business are just worthless fluff? That's probably closest to what I think. "Worthless fluff" is a little harsh, but nearly every business book seems to be full of untested generalizations based on very limited/biased sample sizes. Influence, by Cialdini is one exception that comes to mind. To really learn something in the sense of creating a model that represents reality with a reasonable certainty takes an enormous amount of effort - several orders of magnitude more than effort than self-declared business experts put into their books.