On Sat, 14 Sep 2019 at 03:12, smitra <[email protected]> wrote: > On 11-09-2019 19:41, Stathis Papaioannou wrote: > > On Thu, 12 Sep 2019 at 00:51, 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. > > > > This means that if you don’t know if you are young or very old and > > have to guess, you are more likely to be right if you guess that you > > are young. But it does not mean that you won’t inevitably become > > very old.-- > > > Indeed, there is always going to be a very small probability of finding > yourself in a very atypical situation. In the MWI we would need to take > into account all possible relevant processes here, and forgetting about > some fact and learning about that again will tend to replace extremely > atypical information from he memory and replace that by more typical > information. > > In the MWI the so-called stability of records of measurements is not > valid in an absolute sense. It's only valid in each branch, but you can > hop from one to another branch such that all your memories are swapped > with those of your copy. So, if I find myself to be a trillion years old > and I go top sleep then I'll most likely wake up as a copy that has that > information about me being a trillion years old replaced by a more > reasonable lower number. > > This also means that even if you win the lottery and become a multi > millionaire, you'll very likely end up forgetting this and finding > yourself to not having won the lottery.
I only survive because I remember the person I was. If a branch I find myself in is a dead end then that version of me dies. So if I find myself being a trillion years old and a trillion year old plus a day copy does not exist, or exists but forgets he is me, then the trillion year old copy dies. But if such a copy does exist with an intact memory, then the trillion year copy survives in this copy. It is not an option that I switch from a trillion year old copy to a younger copy with greater measure, any more than it is an option that I will tomorrow wake up Chinese, because there are more Chinese than Australians. > -- Stathis Papaioannou -- 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/CAH%3D2ypUAq_Uv%2Bo3i_cfAsLAwd3M593x5u%2BmRkRA6LdJVTnHUjA%40mail.gmail.com.
