Many Worlds Interpretation and Coffee

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Discussion Overview

The discussion revolves around the Many Worlds Interpretation (MWI) of quantum mechanics, particularly focusing on the implications of this interpretation regarding the nature of possibilities, free will, and the concept of simultaneous events, such as everyone having coffee with everyone else. Participants explore whether all possibilities occur continuously or if there are limitations based on individual choices and circumstances.

Discussion Character

  • Exploratory
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • Some participants question whether the MWI implies that everyone has coffee with everyone else or if it allows for varying probabilities of such events occurring.
  • There is a discussion about whether all possibilities are continuously occurring or if they only happen one at a time, with some suggesting that not all possibilities are likely to have occurred equally.
  • Concerns are raised about the role of free will in the context of MWI, with some arguing that free will is not adequately factored into the equations of quantum mechanics.
  • One participant suggests that the notion of "everything goes in some world" may be a logical fallacy, particularly when considering highly improbable scenarios.
  • Another participant seeks clarification on the definition of "possible" in the context of MWI, indicating that the term may encompass all conceivable outcomes.

Areas of Agreement / Disagreement

Participants express differing views on the implications of MWI, particularly regarding the nature of possibilities and the role of free will. There is no consensus on whether all possibilities are realized or the extent to which free will influences outcomes.

Contextual Notes

Limitations in the discussion include the ambiguity surrounding the definition of "possible" and the challenges in interpreting the Schrödinger equation in relation to MWI. The philosophical implications of free will and anthropism are also noted as areas of contention.

  • #61
vanhees71 said:
Well, then Bohr definitely wrote only about true things. :biggrin:
Except the Bohr model of atom (with the so called "old QM"), which is clear but not true.
 
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  • #62
Demystifier said:
What if I tell you that I have a theory that solves all these questions at once? :wink:
Oh sure, butter me up with something I won't be able to follow. I'm holding out for comprehension.
OK. let's see it, maybe it will work as a soporific.
 
  • #63
Demystifier said:
Is it just because of the existence of atoms, or because you don't think that the axiom of choice represents a physical choice?
I tend to view physics as finite, in the sense that any experiment only has a finite number of outcomes. The mathematics and theoretical physics extrapolates this to countable and uncountable infinities. A classical example is modelling a body as a continuous mass distribution, even though the physics is a large, finite number of particles.

In QM you can practically only carry out a finite number of measurements, so there is always a mathematical extrapolation to a continuous wave function defined on an uncountable set of points.

The extent to which the underlying reality is infinite is perhaps unknowable, as we will only ever have a finite set of data.

In particular, I can't see that the axiom of choice would be relevant in a physical situation.
 
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