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Ask Me Anything | April 2023
Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas
The Importance of Information Conserving in the Evolution of Black Holes
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The statement that the total evolution of black holes should be information conserving is a subtle one. If you all you know or all you're told is the state after a measurement or branching, you can't reproduce what the state was before. That is an irreversible information-losing process. The point of the paper was we took seriously the idea of branching and decoherence, etc.
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