On 9/13/2019 3:38 AM, Bruno Marchal wrote:
On 11 Sep 2019, at 16:51, smitra <[email protected]> wrote:
Back to basics. There exists a universal wavefunction that evolves according to
the Schrodinger equation. Observers are internal structures in this
description. Whether or not one believes that the Born rule can be derived or
not, what matters in practice is that you'll end up having to use it, so you
have to assign a measure for observations that is given by the summation of the
squared modulus of the states that correspond to those observations. The
information about personal identity must then also be extracted from the
wavefunction, so one cannot insert this in an ad hoc way.
Quantum immortality is therefore wrong because the measure of the states that
correspond to extremely old observers is small.
The same reasoning would apply to “quantum suicide”, where it is clear that we
survive all the time; given that we cannot take into account the world where we
do not.
If in H you are multiplied in W and M, but directly killed in M, you survive in W with
probability one. That is why we add p or <>t to []p to transform the logic of belief
([]p) into a probability logic ([]p & <>t).
Suppose you live a few seconds in M. Do you then survive in W with
probability 0.5?
Brent
--
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 view this discussion on the web visit
https://groups.google.com/d/msgid/everything-list/76a574e1-dc37-c7eb-33f1-1e12d18ec5a6%40verizon.net.
