Uploaded April 2023 | Updated September 2026, 1 day ago

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Is the moon still there when we're not looking at it? Schrödinger's cat is neither alive nor dead, but why don't we see real cats or humans in quantum superpositions?

Miriam Frankel investigates a host of quantum paradoxes, with philosopher Chris Timpson and physicists Marcus Huber and Chiara Marletto, in part 4 of Great Mysteries of Physics, FQxI's podcast series produced by The Conversation.

Which quantum interpretation is the best?

Watch physicist Chris Fuchs muse about the meaning of life and his interpretation of quantum physics, QBism, with colleagues and friends over wine: youtube.com/watch?v=EKw1TK7EETM

Listen to previous episodes in the Great Mysteries of Physics series:

Is Time an Illusion? youtube.com/watch?v=aDM5PFMbty8
Is the Universe Finely-Tuned for Life? youtube.com/watch?v=HWnLqK6AOQU
Is There a Multiverse? youtube.com/watch?v=IZ8Fpl6g4dI

Find out more about quantum physics at qspace.fqxi.org