Do multiple universes exist?
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Image: nationalgeographic.com
Does the multiverse idea mean our universe's laws are accidental epicycles of a larger cosmic lottery?
Summary
Multiverse ideas are treated by some physicists as legitimate consequences or interpretations of existing theories, rather than as established discoveries. Eternal inflation, quantum many-worlds, and related proposals could explain features of our universe, but their observational support remains indirect and disputed.
- Inflationary cosmology and quantum mechanics provide prominent theoretical routes to a multiverse, including bubble universes and many-worlds interpretations.
- Some physicists argue that multiverse models can be evaluated through inference, theoretical coherence, and empirical success even when some regions are unobservable.
- The existence of other universes has not been confirmed by statistically significant observations.
Deeper Insight
A universe you can never touch, see or test is hard to tell apart from an invisible dragon in the garage.
Eternal inflation and many-worlds, two of physics' boldest ideas, both seem to sprout other universes. Skeptics ask the rude question: how would you ever check? A realm that can't interact with ours is like the invisible dragon, a creature built so it can never be detected. The multiverse may well be real. The fight is over whether believing in it is still science.
- What it could changeA way to test other universes would turn the most speculative corner of physics into an observational science.
- How it touches todayPhysicists already argue that theories can be judged by coherence and success even where parts can't be seen.
- Our futureScience may have to decide how much of reality it is allowed to believe in without seeing.
- Critics emphasize that researchers have no confirmed evidence of other universes and may lack a practical way to obtain it.
- Some philosophers of physics argue that multiverse claims are speculation rather than established science because they lack extraordinary evidence and clear tests.
- The ‘invisible dragon’ objection highlights the epistemic problem of positing entities that cannot interact with or be detected by us.
Sources · 11
Featured · Analysis · johnhorgan.org
Multiverses Are Pseudoscientific Bullshit — John Horgan (The Science Writer)
Multiverses Are Pseudoscientific Bullshit — John Horgan (The Science Writer) # Multiverses Are Pseudoscientific Bullshit Feb 21 Written By John Horgan I dig fictional depictions of multiverses, like “Everything Everywhere All at Once,” but I don’t dig multiverse theories, which are escapist pseudosc
Read sourceAnalysis · iai.tv
The multiverse is unscientific nonsense | Jacob Barandes » IAI TV
The multiverse is unscientific nonsense | Jacob Barandes » IAI TV ## It's all mere speculation 13th November 2023 ## Jacob Barandes | Harvard University theoretical physicist and philosopher of science 3,320 words Read time: approx. 17 mins Everyone from physicists like Michio Kaku to Marvel superhe
Read sourceAnalysis · skyatnightmagazine.com
Multiple universes? Here's why our own Universe doesn't need one to exist (and why they're like invisible dragons) | BBC Sky at Night Magazine
Multiple universes? Here's why our own Universe doesn't need one to exist (and why they're like invisible dragons) | BBC Sky at Night Magazine # Multiple universes? Here's why our own Universe doesn't need one to exist (and why they're like invisible dragons) The idea there are many universes seems
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