In order to maintain thoroughly hsi philosophical standpoint of Anti-realism, he rejected two-valued semantics and took Intuitionist logic as the basis of his metaphysics.
Coherent with his metaphysics is his idea at survival clearance, which deepens self consciousness in both atomology and monadism from the angle at survival philosophy.
No one, not even the leading experts know everything, every subject from metaphysics to history is far too complicated to master, especially in a short amount of time.
Well, I think if we're doing metaphysics, as opposed to psychology--Psychologically, we understand why losing weight might make a real difference as to how you feel about yourself.