To Unify Or Not To Unify: That Is (Not) The Question : NPR

To Unify Or Not To Unify: That Is (Not) The Question : NPR: "First, we must consider if a complete theory of matter does exist. Second, assuming it does, if we can ever get to it. The first question is quite nebulous. We have no way of knowing if such a complete theory exists. We don’t even know what a “complete” theory is. You may believe it does and spend your life searching for it. That’s a personal choice. Or, like most physicists, you may believe this is nonsense, more metaphysics than physics. The second question, though, is tangible. Can humans achieve complete knowledge of the subatomic world?"