So reduction and emergence are obviously each other's complement. (A bit like differentiation and integration) > If you fully understood the laws of physics at

So reduction and emergence are obviously each other's complement. (A bit like differentiation and integration) > If you fully understood the laws of physics at an atomic level, would it be sufficient to recognize a cpu as turing complete if you see one? This is testable if you take an alternate universe with very few laws. Somewhat canonically, do you understand a Turing machine built in Conway's Game of Life if you understand the 2 rules of that game. (Or 4 rules, depending on how you count). The only way to understand it is to play the game.