![]() Even a slight variation of numerous physical constants and conditions would make our life impossible. ![]() Authentic science shows that the universe we inhabit is exceedingly fine-tuned. ![]() In practice, the purpose served by positing a multiverse is entirely philosophical. Hossenfelder is quite right to expose ideas such as the multiverse as being “untestable from the original idea” and therefore not even properly called “science”. Is there any practical difference? I mean, for example, if there are multiverses, and if they can’t communicate–which I think is part of the theory–one response would be, ‘Well, who cares?’ Intellectually, I’m interested in how reality works, so I wouldn’t say literally ‘who cares?’ But in terms of practical application, string theory, multiverses, supersymmetry: Do any of these at the current time have any practical application? … ![]() Russ Roberts: Does anything–you said at some point–you used the word ‘superfluous’ and you said supersymmetry is just–we don’t need it once we have the Higgs boson. ![]()
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