Re: Time as a Lattice of Partially-Ordered Causal Events or Moments

2002-09-04 Thread Stephen Paul King
Dear Tim and scerir, I am VERY interested in this discussion! ;-) It seems to me that fact that the amplitudes of observables in QM are complex valued and thus do not obey trichotomy may be at the root of the difficulty. When we attempt to make sense of situations such as those we obtain in

Re: Time as a Lattice of Partially-Ordered Causal Events or Moments

2002-09-04 Thread Tim May
On Wednesday, September 4, 2002, at 07:47 AM, Stephen Paul King wrote: Dear Tim and scerir, I am VERY interested in this discussion! ;-) It seems to me that fact that the amplitudes of observables in QM are complex valued and thus do not obey trichotomy may be at the root of the

Re: Time as a Lattice of Partially-Ordered Causal Events or Moments

2002-09-04 Thread Hal Finney
I think on this list we should be willing to seriously consider the many-worlds interpretation (MWI) of quantum mechanics as the ontology for our universe. In particular, we should not assume that wave function collapse is anything more than an illusion caused by decoherence of formerly

Re: Time as a Lattice of Partially-Ordered Causal Events or Moments

2002-09-04 Thread George Levy
Hal Finney wrote: Quantum randomness does not exist in the MWI. It is an illusion caused by the same effect which Bruno Marchal describes in his thought experiments, where an observer who is about to enter a duplication device has multiple possible futures, which he treats as random. Could

Re: Time as a Lattice of Partially-Ordered Causal Events or Moments

2002-09-04 Thread Tim May
On Wednesday, September 4, 2002, at 10:08 AM, Hal Finney wrote: I think on this list we should be willing to seriously consider the many-worlds interpretation (MWI) of quantum mechanics as the ontology for our universe. I remain agnostic on the MWI or EWG interpretation. While I don't

Re: Time as a Lattice of Partially-Ordered Causal Events or Moments

2002-09-04 Thread Hal Finney
Tim May wrote: On Wednesday, September 4, 2002, at 10:08 AM, Hal Finney wrote: There are a few objections which I am aware of which have been raised against the MWI. The first is its lack of parsimony in terms of creating a vast number of universes. We gain some simplification in the

Re: Time as a Lattice of Partially-Ordered Causal Events or Moments

2002-09-04 Thread Stephen Paul King
Dear Tim, Thank you for the reply but ... Well, I did not mean to imply that we should look to Egan's fictional character for actual theories or any other novel or fiction... I think that I asked you a similar question before regarding the idea that Egan is discussing using the fictional

Re: Time as a Lattice of Partially-Ordered Causal Events or Moments (fwd)

2002-09-04 Thread Brent Meeker
OOPS! I sent this reply only to Hal - instead of the list. So here's the fwd to the list. Brent Meeker On 04-Sep-02, Hal Finney wrote: I think on this list we should be willing to seriously consider the many-worlds interpretation (MWI) of quantum mechanics as the ontology for our universe.

Re: Time as a Lattice of Partially-Ordered Causal Events or Moments

2002-09-04 Thread Brent Meeker
On 04-Sep-02, Hal Finney wrote: Brent - FYI you sent your comment just to me again. I don't know if you intended to send it to the list or not. But I will reply just to you based on how you sent it. Sorry, Hal - my mistake. You wrote: I have always had two problems with the MWI. Initially

Re: Time as a Lattice of Partially-Ordered Causal Events or Moments

2002-09-03 Thread Osher Doctorow
From: Osher Doctorow [EMAIL PROTECTED], Tues. Sept. 3, 2002 8:26AM It also depends on the logic that one chooses (e.g., Lukaciewicz/Rational Pavelka and Product/Goguen and Godel fuzzy multivalued logics - see P. Hajek Metamathematics of Fuzzy Logics, Kluwer: Dordrecht 1998 for an excellent

Re: Time as a Lattice of Partially-Ordered Causal Events or Moments

2002-09-03 Thread Tim May
I'll say a few words on my personal journey in math. On Tuesday, September 3, 2002, at 08:46 AM, Osher Doctorow wrote: One confusing point, I think, is the tendency of many mathematical logicians to identify with algebra and in fact to claim that their field is a branch or outgrowth of

Re: Time as a Lattice of Partially-Ordered Causal Events or Moments

2002-09-03 Thread scerir
Tim May: I don't have a comprehensive theory of time, but I am very fond of causal time. Sometimes we read papers saying there is now experimental evidence that quantum phenomena are a-causal or non-causal or out-of-time. See, in example, these recent papers

Re: Time as a Lattice of Partially-Ordered Causal Events or Moments

2002-09-03 Thread Tim May
On Tuesday, September 3, 2002, at 02:21 PM, scerir wrote: Tim May: I don't have a comprehensive theory of time, but I am very fond of causal time. Sometimes we read papers saying there is now experimental evidence that quantum phenomena are a-causal or

Re: Time as a Lattice of Partially-Ordered Causal Events or Moments

2002-09-02 Thread Osher Doctorow
From: Osher Doctorow [EMAIL PROTECTED], Mon. Sept. 2, 2002 9:29PM It is good to hear from a lattice theorist and algebraist, although I myself prefer continuity and connectedness (Analysis - real, complex, functional, nonsmooth, and their outgrowths probability-statistics and differential and

Re: Time as a Lattice of Partially-Ordered Causal Events or Moments

2002-09-02 Thread Tim May
On Monday, September 2, 2002, at 09:22 PM, Osher Doctorow wrote: From: Osher Doctorow [EMAIL PROTECTED], Mon. Sept. 2, 2002 9:29PM It is good to hear from a lattice theorist and algebraist, although I myself prefer continuity and connectedness (Analysis - real, complex, functional,