Elon, I beg you. We have worked so hard to get rid of the quantum woo peddling `only when you look' nonsense for so long. In a single tweet you have ruined ithttps://twitter.com/elonmusk/status/1205230908837523456 …
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Sounds like a flimsy analogy but not too egregious imo From Wiki article on Copenhagen interpretation: "physical systems generally do not have definite properties prior to being measured" (maybe he should've said measured vs. observed?) Then again you're the physicist
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That’s the curse of quantum mechanics: a lot of common words that have a really specific meaning when used in qm, but that shouldn’t be used when explaining it to non-physicists
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He could have, but to be fair, I'm yet to see a precise definition of what counts unequivocally as a "measurements", so I do not think that would help much the general philosophical point.
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Looked at = measured is how I understood the tweet. Otherwise it'd be totally silly I agree.
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Even then... to many people, the term 'measurement' without further qualification is still associated too strongly with Copenhagen interpretation 'observer' issues. Perhaps better to just go straight to decoherence.
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Decoherence alone doesn't solve the problem. It simply zeroes all entanglement in a basis that depends on the measurement. It doesn't however say why we observe only ONE specific eigenvalue (for a single event) rather than a weighted average or distribution of all of them.
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