Le 12-nov.-05, à 21:45, Riou Teva a écrit :
> Bruno Marchal a écrit :
>
>>>
>>> Yes, I mean looking the same event (a finished ensemble of instants)
>>> forever from the first person perspective. Nevertheless I think the
>>> probability, that a possible event happens, increase with the course
>>> of time. On an infinite time (a point of view of an immortal
>>> person), could this possibility become a necessity?
>>
>> I guess so.
>
> So if every possibility can be regards as a necessity, every
> possibility will be come true sooner or later even from an first
> person perspective, won't it?
I don't think so. The possibilities and necessities are relative. Also
it is hard to reason about them intuitively given that eventually they
rely on the very counterintuitive logic of self-reference. Well,
technically you got it almost right in the first sentence: all
primitive events p (aka observer-moment) correspond to the Universal
Dovetailer reaching some computational states corresponding to p, and I
have shown that for such p, and from the sound (or just consistent)
machine point of view, we have p -> BDp; that is the truth of p entails
the necessity of the possibility of p. It is that formula (named B in
my thesis, but named LASE in this list, for Little Abstract
Schroedinger Equation) which explains why the logic of observation is
quantum like.
> Then we can't consider this eternal return of a same event since
> others possibilities have to be realized... but the quantum theory of
> immortality allows that a same event can recur even on an infinite
> lenght of time, is it a paradox?
I don't see why.
Bruno
http://iridia.ulb.ac.be/~marchal/
Received on Mon Nov 14 2005 - 06:14:17 PST