Mous: "Eliezer, have you written (or is there) a thesis on the validity of using, as an a priori, poor old Ockham's beard trimmer as the starting point for any and all and every thing?"

See "Occam's Razor," "A Priori," and "My Kind of Reflection." For future reference, this sort of thing should really go in the monthly Open Thread (which does have an unfortunate tendency to drop off the front page).