@@ -26,3 +26,3 @@ No.
-It is likely that physics, as implemented by the [[universe]], can be simulated to arbitrary precision on a [[computer]]. This includes the parts of physics which conscious beings use. If consciousness is determined by physical hardware, then that physics can thus be simulated on a computer and will behave identically (or at least up to [[thermal noise limits]], with enough simulation precision) to the physical version. Either this is not possible - physics is not computable - or consciousness is [[Newton's Flaming Laser Sword|epiphenomenal]], which is bad, or consciousness is generated by computation of some form.
+It is likely that physics, as implemented by the [[universe]], can be simulated to arbitrary precision on a [[computer]]. This includes the parts of physics which conscious beings including [[humans]] use. If consciousness is determined by physical hardware, then that physics can thus be simulated on a computer and will behave identically (or at least up to [[thermal noise limits]], with enough simulation precision) to the physical version. Either this is not possible - physics is not computable - or consciousness is [[Newton's Flaming Laser Sword|epiphenomenal]], which is bad, or consciousness is generated by computation of some form.
@@ -30,2 +30,4 @@ If [[continuity]] is important, you may instead substitute some kind of gradual
+It may be the case that the underlying laws of physics are nondeterministic: popular interpretations of quantum mechanics are. It may also be the case that even if the laws are deterministic, there is unavoidable measurement error in reading out the configuration of conscious beings. This probably does not rescue physicalism, because no macroscale behaviour can rely on randomness turning out the right way/the right microstates, or it would not work given the intrinsic noise (technically, it could be the case that the processes maintain a fragile internal state which is damaged if read out, like a quantum computer, but these would also be broken by the normal environment in [[humans]]).
+
=== Julian Jaynes