My theory is time doesn’t actually exist, it’s a construct we made up to explain cause and effect. You can’t travel back in time for the same reason you can’t unbreak an egg. You’d have to figure out how to reverse entropy which per our understanding of physics is the most impossible of all impossible things.

I’m curious, why? I think metric makes sense in most regards but I like the granularity of F. The difference between 70F and 75F is pretty noticeable, but in C, it’s like what? 1 degree?