Sleep is like forced time travel, and personally, I'm sick of doing it. But anyway.
-What? Why? I love sleeping. But I also love being awake. It's a burden to love all states of existence, I know. The laws of physics work perfectly well for a reversal of time. An increase in entropy signals what we have defined as the "positive" time direction, but physics may never tell us why humans can only seem to experience time towards the positive direction, and physics may forbid construction of a time machine.
-To your knowledge, is there a good example of a process in physics that was thought to not be reversible or that was popularly thought to be "set in stone" but has since been proven otherwise? -I'm not sure if my question is articulated properly but I guess what I'm asking is, what advances in the understanding of physics have enabled us to throw our our innate assumptions? -We are born in to a linear way of processing time. This is innate. I wonder, have other such processes that are innate been changed during our human evolution? It's hard to know NOW that we are in our current evolved state. I wonder what assumptions we hold now will be dispelled for future generations?