Thermodynamics and The Universe

Buzsaw, I think you confuse "illogical" with "counterintuitive". There is nothing illogical about QM. And that Feynman quote that you like to cite doesn't mean what you think it means. Quantum mechanics is one of the most developed and best supported theories that we have. There are probably tens of thousands of researchers who use QM on a regular basis. It's not just some pure theoretical mind games. If you do anything in chemistry or materials science or electronics, you'll be running into QM all the time. Even I have had brushes with it, although my field is pretty far removed.

I hope you don't mind if I butt in before Parasomnium: This is like asking, how do you measure the length of the equator with a micrometer? You don't. You don't use QM to explain the Solar System because it is practically impossible. You use classical approximations, which on this scale yield results that are practically indistinguishable from QM results. Adjectives such as 'mysterious', 'obfuscatory', and 'controversial' describe your perception of a subject that you haven't studied in detail and don't have the capacity to understand. They say nothing about the science of QM as such (which, paradoxically, you claim to accept). No, we don't. As others have pointed out, there is no obvious way of estimating this entropy. And QM has nothing to do with that - nor do the things that you mentioned earlier (the "Goldilocks" conditions for habitability). I have to ask, too: what do you think entropy is?