Re: Tegmark is too physics-centric

2004-02-24 Thread Bruno Marchal
Hi Russell, Let me try to be a little more specific. You say in your Occam paper at http://parallel.hpc.unsw.edu.au/rks/docs/occam/node4.html The first assumption to be made is that observers will find themselves embedded in a temporal dimension. A Turing machine requires time to separate the

Re: Tegmark is too physics-centric

2004-02-24 Thread Russell Standish
I think that psychological time fits the bill. The observer needs a a temporal dimension in which to appreciate differences between states. Physical time presupposes a physics, which I haven't done in Occam. It is obviously a little more structured than an ordering. A space dimension is

Re: Tegmark is too physics-centric

2004-02-24 Thread Stephen Paul King
Dear Russel, Could we associate this psychological time with the orderings that obtain when considering successive measurements of various measurements of non-commutative canonically conjugate (QM) states? Also, re your Occam's razor paper, have you considered the necessity of a