On Sat, Nov 30, 2024 at 03:55:08PM -0500, John Clark wrote: > On Fri, Nov 29, 2024 at 10:10 AM smitra <[email protected]> wrote: > > > > What is also worthwhile to consider in these discussions about > probability, > Born rule etc. the fact that probability cannot be rigorously defined in > a > physical > context as David Deutsch explains here > https://www.youtube.com/watch?v=wfzSE4Hoxbc&t=1036s > > > Interesting video, thank you for recommending it. I think Deutsch does a good > job highlighting the fact that any theory that attempts to deal with > fundamental reality is going to have a problem when it comes to probability, > but if Many Worlds has a problem rigorously defining probability then the > other > fundamental quantum interpretations do it even more poorly. And if Many Worlds > is true, or nearly so, and if intelligent creatures who enjoy gambling exist > in > some of those worlds, then they are going to develop something close to the > thing that in English is called "probability" and they are not going to worry > very much about a rigorous definition of it or the deep philosophical problems > that it may entail. > > John K Clark See what's on my new list at Extropolis > lad >
Agreed - this is an interesting presentation, and getting a deeper understanding of his Constructor theory is on my TODO list. I might point out that in this lecture, he jumps immediately from the case of two equal possibilities 1/√2 |x₁>+1/√2|x₂>, where he eliminates Born rule, probabilities etc to get directly to a decision theoretic interpretation, to eliminating those tools in general for the whole gamut of probability theory application. It needs to be done for more general superpositions α|x₁>+β|x₂>, and I suspect the devil is in the details there. Most of the simplistic "branch counting" interpretations fail on that case. Hopefully, it has been done, and he was resorting to the simplistic case for pedagogical purposes... Since in my own work, I start from a notion of information (and complexity), which is intrinsically probabilistic, I'd like to see how constructor theory might rebase that subject. Again, the topic is way more complex than can be presented in such a 1 hour seminar. Hopefully, I'll find the time to dig into this topic in the next few years...:P. -- ---------------------------------------------------------------------------- Dr Russell Standish Phone 0425 253119 (mobile) Principal, High Performance Coders [email protected] http://www.hpcoders.com.au ---------------------------------------------------------------------------- -- 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/Z00O5Qy6Vj-txOST%40zen.
