>I’m pretty sure the breakdown of the human body due to aging and wear and tear would lead to organism death well in advance of trillions of years. > >Even the elderly consume the same amount of energy as the young but just eating can’t extend life forever.

This break down of the body is something encoded into our DNA, not something dictated by the nature of reality. We have found life forms on Earth that appear to be biologically immortal and can continously regenerate themselves, seemingly without end as far as we can tell.

>Entropy is at work at all times to move systems from highly improbable states like human beings into highly probable states. It’s very much a problem.

Entropy only necessarily increases in a closed system. The human body is very much not a closed system. As long as there is other entropy to increase (such as from un-fused hydrogen or un-evaporated black holes), there is no physical reason we cannot keep the entropy of a human body low over very long time periods.

>It’s at work at all times. It only needs to work once. This is why magic is impossible and why the hard problem of death will never be solved.

Again, only in closed systems. If you spill milk on the floor nothing is physically stopping you from sucking it back up into the carton. Though the action of doing so will increase the overall entropy of the universe, even if it decreases the local entropy of the milk-carton-floor system.

>Heck even computer systems degrade with time if you wanna go the human consciousness in computers route. Entropy defines the limits of the possible.

I mean, if you never repair the computer (which you totally can, no magic needed I promise), sure they'll degrade over time.