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Timeline for Uncertainty of the past

Current License: CC BY-SA 4.0

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May 22, 2021 at 16:15 comment added Edouard I was surprised to learn, recently, that the underlying philosophy of physics provides for at least two "arrows of time", an entropic arrow and a causal arrow: This possibility, which seems to be inherent in the distinction between animate and inanimate objects, has been exploited by the mathematical physicist Roger Penrose (the winner of a 2020 Nobel Prize in physics), in his "Cyclic Conformal Cosmology", much-discussed on PSE since 2010.
May 20, 2021 at 22:16 history answered Kregnach CC BY-SA 4.0