On Wed, Nov 27, 2019 at 8:55 AM Bruce Kellett <[email protected]> wrote:
> > Quantum mechanics itself is not counterfactually definite. Einstein was > wrong about this. A free electron is described by a wave packet which is a > superposition of states of definite momentum and position. There is no > actual "position" for the electron until it interacts with a screen or some > similar device. This is demonstrated by simple two-slit interference. There > is no pre-existing position, unless you want to embrace Bohm's pilot wave > theory, in which the electron does have a definite, though unknown, > position at all times. > I have come across an interesting video https://www.youtube.com/watch?v=5D9HkoHScdY in which Gerard 't Hooft, Roger Penrose, Tim Maudlin and a couple of others talk about interpretations of quantum mechanics from their different perspective. I found the segment by Tim Maudlin particularly interesting, given his new book on the philosophy of quantum mechanics. His segment starts at about the 10 minute mark. But the other contributions also have some interest -- particularly Philip Ball towards the end (about the 20 minute mark). No definite conclusions are advocated, but it is interesting to hear the different perspectives. Bruce -- 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/CAFxXSLRuSffgwr%3DKK8oNo4NSz%3DnYa8yB6OQtrQJWpA7jOs9Hqw%40mail.gmail.com.
