At least the first 2. The 3rd seems obvious to me. Don't get me wrong, I'm not denying CoE, I'm just questioning the reason why we have a law called Conservation of Energy, and an identical law called The First Law of Thermodynamics. As for the second law, I've seen it defined 2 ways: in terms of the entropy of an isolated system, and in terms of the entropy of the universe. If it's the entropy of an isolated system I have less of a problem than if it's the entropy of the universe. (I'm gonna get a little out there...) Assuming the Big Bang-Big Crunch theory is still at least plausible, upon analysis, the big bang portion is compliant with the 2nd law, but the big crunch is in complete contradiction... rather I think it implies a somewhat parabolic relationship between entropy and time. ##S = k - m(t - a)^2## or something along those lines... S is entropy, t is time, k m and a are constants. Does anybody else get what I'm saying? Didn't really know where to put this.