On Sunday, February 3, 2013 12:11:17 PM UTC-5, Bruno Marchal wrote: > > > On 01 Feb 2013, at 16:42, Roger Clough wrote: > > Hi Bruno Marchal > > I would think that each universe provides its own distinctive > context to any calculation, including comp. > > > Comp is the assumption that we are Turing emulable. > That notion is made very solid by Church's thesis. > > I don't think that we can assume that a Turing emulation of us is actually "us". To the contrary, a Turing emulation of geometry is not geometry. A Turing emulation of water can be the same as a Turing emulation of water in another Turing emulated virtual world, but no emulated drop of Turing water can ever be a genuine drop of water within the world that we actually live in. It doesn't matter that 17 is still prime when you are dying of dehydration.
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