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What anthropic do you mean? I'm describing properties of models, not people. Physics (probably) doesn't care what you "know". On the guid idea - fundamental pa
by bubblyworld 2y ago
What anthropic do you mean? I'm describing properties of models, not people. Physics (probably) doesn't care what you "know".
On the guid idea - fundamental particles are indistinguishable from one another in quantum mechanics, so they don't have anything like a guid even in principle. There is no experiment you could perform on an electron to determine whether it had been swapped out for a "different" one, for instance.
Maybe I'm missing your point though?
- lizzas 2y agoSorry ... I am replying mostly to the dice idea which wasn't you. Yes correct about the guid idea. My point is the discussion is easier to follow if grounded in reality (as best modelled since that is all we have plus some evidence stored in the same "SSD"!)
- bubblyworld 2y agoOh I see. But on your guid thing, people often describe entropy in terms of the set of micro states of your system (the actually physical states in your model) and the macro states (sets of microstates that are described by a collection of high-level state variables like pressure/temperature). Physically indistinguishable stuff would have the same micro state, so yeah, they wouldn't affect entropy calculations at all, no matter what macro states you picked. But I disagree a bit about grounding things in reality - some concepts are quite abstract and having clean examples can be helpful, before you start applying them to the mess that is our universe!