The Many-Worlds Idea of Quantum Mechanics

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The many-worlds idea comes out of quantum mechanics and whoever at the third's PhD thesis in the 1950s. The lesson of quantum mechanics up and down is that what we see and what there is are two kind of different things. This is actually, as mind-bending as it is, to me, far and away the most likely to be real version of the multiverse.

The film Everything Everywhere All at Once won the 2023 Academy Award for Best Picture. In this episode from March 2023, just before the Oscars, Ian Sample spoke to the theoretical physicist and philosopher Sean Carroll about why we seem to be drawn to the idea of multiple worlds, and what the science says about how the multiverse might actually work. Help support our independent journalism at theguardian.com/sciencepod