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Oct 15 at 12:49 comment added JMac Right, we know it's a limit where known theories fall apart, but that's more due to theoretical limits of quantum measurement, and because we have no proven theory to reconcile QM and small scale gravity.
Oct 15 at 12:39 comment added Russell McMahon @JMac No. Yes. :-) - "The laws of Physics" [as we know them, Jim] do not apply for shorter periods. Better reference than above here. wiki2.org/en/Planck_units
Oct 15 at 12:00 comment added JMac Isn't the Planck time more like the shortest time interval that can be accurately measured? I think there's a good distinction between that and saying only discrete time "exists", and the difference seems to lead to confusion.
Oct 15 at 11:49 history answered Russell McMahon CC BY-SA 4.0