Wow, thanks.<p>I don't think this essay was intended to be a complete review and a last word of all philosophy. I read it as explanation of the motivation pg has for his essays. And I like the goal of seeking  the "most general useful truth".<p>Now, I'm not pursuing this goal because I think most  philosophical questions should be restated as scientific questions. The problem of knowledge, epistemology, becomes mostly cognitive science. The problem of conduct, ethics, should be researched using simulated evolution models of game theory. And so on and so forth.