Noether’s theorem links symmetry to conservation laws. If you have an asymmetry in your causality, then you don’t have conservation of energy anymore.
An exemple of such a system is Conway’s game of Life, where you cannot always deduce the past state of the board from its future state. The sum total of all cells values in a Life board isn’t constant over different time slices either, so no conservation there.
Is it possible that on that one you’re still attached to one of those comfortable fuzzy thoughts ? Is there for instance a(n emotional) reason to value an universe in which there is causality over one where there isn’t ?
The symmetry corresponding to conservation of energy is time translation, not time reversal. That said, I have other reasons to be doubtful of Yudkowsky’s thesis here. In particular, I think it really does come down to entropy.
Noether’s theorem links symmetry to conservation laws. If you have an asymmetry in your causality, then you don’t have conservation of energy anymore.
An exemple of such a system is Conway’s game of Life, where you cannot always deduce the past state of the board from its future state. The sum total of all cells values in a Life board isn’t constant over different time slices either, so no conservation there.
Is it possible that on that one you’re still attached to one of those comfortable fuzzy thoughts ? Is there for instance a(n emotional) reason to value an universe in which there is causality over one where there isn’t ?
The symmetry corresponding to conservation of energy is time translation, not time reversal. That said, I have other reasons to be doubtful of Yudkowsky’s thesis here. In particular, I think it really does come down to entropy.