On Sun, Nov 16, 2014 at 02:13:51PM +0100, Bruno Marchal wrote: > > On 14 Nov 2014, at 23:35, Richard Ruquist wrote: > > > > > > >On Fri, Nov 14, 2014 at 5:35 PM, Russell Standish > ><[email protected]> wrote: > >On Fri, Nov 14, 2014 at 05:14:24PM -0500, Richard Ruquist wrote: > >> > >> But QM equations are time reversible, The differentiation of the > >universe > >> is not > > > >Your point being? > > > > > >Differentiation may not be unitary > > OK, but it belongs to the first person view. >
No - differentiation is 3p. It is a property of the Schroedinger equation describing the evolution of observer+system. I think you are mixing it up with wave function collapse, which is a 1p notion. I think the point is that differentiation is only an approximate description of reality. The offdiagonal terms of the density matrix become vanishingly small, but never strictly zero - there is always a small possibility ther universe will undifferentiate. This is my take home message from Zeh's work, anyway. -- ---------------------------------------------------------------------------- Prof Russell Standish Phone 0425 253119 (mobile) Principal, High Performance Coders Visiting Professor of Mathematics [email protected] University of New South Wales http://www.hpcoders.com.au Latest project: The Amoeba's Secret (http://www.hpcoders.com.au/AmoebasSecret.html) ---------------------------------------------------------------------------- -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
