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Does it not take energy to process information? Can any computable function be computed with arbitrarily low energy input/entropy increase?
by Y_Y 2y ago
Does it not take energy to process information? Can any computable function be computed with arbitrarily low energy input/entropy increase?
- colanderman 2y agoNo, and yes, so long as you don't delete information. Think of a marble-based computer, whose inner workings are frictionless and massless. The marbles roll freely without losing energy unless they are forced to stop somehow, but computation is nonetheless performed.
- Y_Y 2y agoI don't know how to compute with marbles without mass and stopping. Marble computers I've seen rely on gravity and friction, though I'd love to see one that didn't.