Deutsch's multiverses

2017-06-09 Thread Brent Meeker
Here's Alastair Rae's review of Deutsch's book "The Beginning of Infinity". Rae notes that the basis problem seems to bring back the Heisenberg cut problem in a different form. He mentions Deutsch's idea which is popularly used to describe a quantum computer as being massively parallel.

Re: A thought on MWI and its alternative(s)

2017-06-09 Thread Bruce Kellett
On 10/06/2017 4:21 am, David Nyman wrote: On 9 June 2017 at 12:34, Bruno Marchal > wrote: OK. In this case, Alice choose to measure her spin. This will only self-localized here in one (actually still aleph_0) histories, where she will

Re: A thought on MWI and its alternative(s)

2017-06-09 Thread Bruce Kellett
On 10/06/2017 2:36 am, Telmo Menezes wrote: On Fri, Jun 9, 2017 at 12:37 AM, Bruce Kellett The idea that the explanation is epistemological rather that ontological has been my preferred position for a long time. If the wave-function is merely an epistemological device for calculating

Re: Carlo Rovelli's critique of Platonism

2017-06-09 Thread Bruno Marchal
On 08 Jun 2017, at 03:34, Bruce Kellett wrote: I have just come across this paper from a year or so ago. Rovelli essentially summarizes many of my own negative feelings about mathematical platonism. https://arxiv.org/pdf/1508.1.pdf Exercise. Show that the Church-Turing-Post-Kleene

Re: A thought on MWI and its alternative(s)

2017-06-09 Thread Bruno Marchal
On 08 Jun 2017, at 02:05, Bruce Kellett wrote: On 7/06/2017 10:38 pm, Bruno Marchal wrote: On 07 Jun 2017, at 11:42, Bruce Kellett wrote: On 7/06/2017 7:09 pm, Bruno Marchal wrote: On 06 Jun 2017, at 01:23, Bruce Kellett wrote: I have been through this before. I looked at Price again this

Re: substitution level

2017-06-09 Thread Telmo Menezes
On Wed, Jun 7, 2017 at 11:41 AM, Bruno Marchal wrote: > > On 06 Jun 2017, at 15:52, Telmo Menezes wrote: > >> On Mon, Jun 5, 2017 at 6:07 PM, Bruno Marchal wrote: >>> >>> >>> On 05 Jun 2017, at 16:07, Telmo Menezes wrote: >>> >>> I guess you mean that it

Re: A thought on MWI and its alternative(s)

2017-06-09 Thread Telmo Menezes
On Fri, Jun 9, 2017 at 12:37 AM, Bruce Kellett wrote: > On 8/06/2017 11:25 pm, David Nyman wrote: > > On 8 Jun 2017 12:50 p.m., "Bruce Kellett" wrote: > > On 8/06/2017 9:06 pm, David Nyman wrote: > > > Yes, this is also the point where I

Re: A thought on MWI and its alternative(s)

2017-06-09 Thread David Nyman
On 9 June 2017 at 12:34, Bruno Marchal wrote: > > On 08 Jun 2017, at 02:05, Bruce Kellett wrote: > > On 7/06/2017 10:38 pm, Bruno Marchal wrote: >> >>> On 07 Jun 2017, at 11:42, Bruce Kellett wrote: >>> On 7/06/2017 7:09 pm, Bruno Marchal wrote: >>> On 06 Jun 2017, at