Yes you did, and that was the whole point of the thread? >> At the end of the day, there are interactions that are seen in Nature and interactions that aren't.

Yes you did, and that was the whole point of the thread? >> At the end of the day, there are interactions that are seen in Nature and interactions that aren't. > That's provably false. Every reaction occurs in nature, even the vanishingly improbable ones, just at an extremely low reaction coefficient. They're still there, just at a probability of 10^-14 or whatever. To the best of our knowledge, not every reaction occurs in Nature, and chemical equilibrium has nothing to do with it. The patterns we observe as to which can occur and which can't, we call conservation laws. You might want to accept that or not; doesn't change what the experiments output. And of course if there was proof of the contrary you'd be onto something very very big.