Einstein & Bohr Debate: Epistemological Paradox

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SUMMARY

The forum discussion centers on the epistemological paradox arising from the debate between Albert Einstein and Niels Bohr regarding the completeness of quantum mechanics. Bohr's Copenhagen Interpretation asserts that certain aspects of quantum behavior are fundamentally unknowable, while Einstein, through his EPR paper, argues for the existence of predetermined values, challenging the completeness of quantum mechanics. The discussion highlights the philosophical nature of their disagreement, emphasizing that while both contributed significantly to quantum theory, the consensus suggests that Einstein's views may ultimately be deemed incomplete in light of modern interpretations and experimental evidence.

PREREQUISITES
  • Understanding of the Copenhagen Interpretation of quantum mechanics
  • Familiarity with the EPR paradox and its implications
  • Knowledge of Heisenberg's Uncertainty Principle
  • Basic grasp of quantum entanglement and its significance
NEXT STEPS
  • Read Einstein's EPR paper: "Can Quantum-Mechanical Description of Physical Reality Be Considered Complete?" (1935)
  • Explore Bohr's response to the EPR paper for contrasting viewpoints
  • Investigate Bell's theorem and its experimental validations regarding quantum mechanics
  • Study the implications of the ensemble interpretation of quantum mechanics
USEFUL FOR

Students of physics, quantum mechanics researchers, philosophers of science, and anyone interested in the foundational debates of quantum theory will benefit from this discussion.

  • #61
Vividly said:
My question is, what was their “stand” in regards to this epistimological paradox?

To answer the question head-on, the epistemological difference between Einstein and Bohr is Einstein was a realist. He believed in an objective world out there independent of anyone’s beliefs, linguistic practices, conceptual schemes, and so on. Within that view of the world, there are many different nuanced positions. Einstein was also an epistemological opportunist; he simply took the one that served his purpose the best. The point to take away, though, is he was a realist. Bohr was an instrumentalist believing science reveals nothing except what is observable. Science is just a tool allowing the prediction of observations but does not reveal any hidden aspects of nature that may explain those laws.

Feynman, too was an opportunist - believing it to be just one 'trick' that scientists can try to unlock natures secrets. He was quite anti-philosophy - which is rather strange because it is philosophy itself.

In modern times I think most (but not all - see the writings of Penrose, for example) scientists are really neither; they are like Stephen Hawking believing in some form of Model-dependent realism:
https://en.wikipedia.org/wiki/Model-dependent_realism

I, too, am in that camp, although I was once in Prenose's camp. But like Feynman, as far as nuances go, I am an opportunist.

Thanks
Bill
 
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  • #62
It's ironic that Einstein insisted on a "constructive" account of entanglement when he could have produced a "principle" account using his relativity principle. He gave up on "constructive efforts" for explaining time dilation and length contraction, so I wonder why he never considered doing likewise for entanglement. I read some quotes indicating that perhaps he was not really happy with special relativity in the absence of a constructive counterpart, so maybe he didn't even want to go that way with EPR? https://sciencex.com/news/2020-10-einstein-opportunity-spooky-actions-distance.html
 
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  • #63
bhobba said:
Einstein was also an epistemological opportunist; he simply took the one that served his purpose the best. The point to take away, though, is he was a realist. ...

Feynman, too was an opportunist - believing it to be just one 'trick' that scientists can try to unlock natures secrets. He was quite anti-philosophy - which is rather strange because it is philosophy itself.
Feynman is hard to categorize. He wasn't 'anti-philosophy': he was just opposed to a non-scientific philosophy posing as science (which to him was like people arguing over whether an interpretation of a Rorschach diagram was correct). His entire career was an attempt to explain nature so his motivation in that sense was a philosophical one. He was fascinated by the fact that nature seemed be explainable in different ways without contradiction. He remarked on this in his Nobel lecture:
"I would like to interrupt here to make a remark. The fact that
electrodynamics can be written in so many ways - the differential
equations of Maxwell, various minimum principles with fields,
minimum principles without fields, all different kinds of ways, was
something I knew, but I have never understood. It always seems
odd to me that the fundamental laws of physics, when
discovered, can appear in so many different forms that are not
apparently identical at first, but, with a little mathematical
fiddling you can show the relationship. An example of that is the
Schrödinger equation and the Heisenberg formulation of quantum
mechanics. I don't know why this is - it remains a mystery, but it
was something I learned from experience. There is always
another way to say the same thing that doesn't look at all like the
way you said it before. I don't know what the reason for this is. I
think it is somehow a representation of the simplicity of nature. A
thing like the inverse square law is just right to be represented
by the solution of Poisson's equation, which, therefore, is a very
different way to say the same thing that doesn't look at all like
the way you said it before. I don't know what it means, that
nature chooses these curious forms, but maybe that is a way of
defining simplicity. Perhaps a thing is simple if you can describe it
fully in several different ways without immediately knowing that
you are describing the same thing."

AM
 
  • #64
bhobba said:
In modern times I think most (but not all - see the writings of Penrose, for example) scientists are really neither; they are like Stephen Hawking believing in some form of Model-dependent realism:
https://en.wikipedia.org/wiki/Model-dependent_realism

I, too, am in that camp, although I was once in Prenose's camp. But like Feynman, as far as nuances go, I am an opportunist.
What does Penrose believe that is different from most scientists?

("Prenose" means you were born before noses were invented...)
 
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