Le mar. 18 févr. 2025, 03:42, Bruce Kellett <[email protected]> a écrit :
> On Tue, Feb 18, 2025 at 12:00 PM Quentin Anciaux <[email protected]> > wrote: > >> Bruce, >> >> Consider the following thought experiment, which directly parallels MWI >> and illustrates why your argument assumes what it tries to prove. >> >> Imagine we have a machine that can perfectly duplicate an observer, just >> as MWI implies happens during quantum measurements. The experiment works as >> follows: >> >> 1. The observer enters a sealed box. >> >> 2. Inside the box, they are duplicated into 10 copies. >> >> 3. Each duplicate is placed in an identical room with only one visible >> difference: >> >> One of them sees a 0 written on the wall. >> >> Nine of them see a 1 written on the wall. >> >> 4. The observer, upon exiting the box, can only report what they >> personally experienced. >> > > It has occurred to me what is wrong with this example. Instead of > considering a two-outcome experiment, where we get either a zero or a one, > you have considered a ten-outcome experiment, with one zero and nine ones. > This is not equivalent to the binary case under consideration. In the > binary case, we get 2^N possible sequences after N trials, (not the 10^N > sequences as in your example). Because there are only two possible outcomes > in my example, the majority of sequences will have approximately a 50/50 > split of zeros and ones. The majority of observers are then going to use > their data to estimate a probability of 0.5 for getting a zero. Now this > bears absolutely no relation to the actual Born probability, which is > a^2.The majority of observers estimate p = 0.5, whatever the value of a. > This is because there are only 2^N possible binary sequences of length N, > and we get the same 2^N sequences whatever the values of a and b. That is > why I say the amplitudes have no effect. > > Bruce > There are only two possible outcome in my example, seeing 1 or seeing 0. > -- > 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 visit > https://groups.google.com/d/msgid/everything-list/CAFxXSLSWH%3DL%3De34CjZVFo8YxGNCdwr1ryUfSFLdQ49_hruBr8w%40mail.gmail.com > <https://groups.google.com/d/msgid/everything-list/CAFxXSLSWH%3DL%3De34CjZVFo8YxGNCdwr1ryUfSFLdQ49_hruBr8w%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- 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 visit https://groups.google.com/d/msgid/everything-list/CAMW2kAosuRCaivDWcJtUMxW3a_Ly2Rr4zck9aKd_MLYktJ1y%2BA%40mail.gmail.com.
