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Here Is a Way We Can Be Sure If We Are Living in a Multiverse

An experiment can test the idea that there is an infinite number of universes
For our experiment, we need a quantum coin flipper, a disintegration gun, and observers who are sure that there is an infinite array of universes out there. Read More ›
Blue glowing multiverse in space

Is Big Bang Theory’s Sheldon Right re the Multiverse?

Sheldon Cooper insists that in no universe would he dance with Penny

A collection of universes is called a multiverse. If there are enough universes in a multiverse, can almost anything happen? No. Common models of the universe aren’t big enough. The argument that anything can happen in a multiverse is nicely presented in a 2011 scene in the sitcom The Big Bang Theory (2007–2019) involving consummate nerd Sheldon Cooper and Penny, the girl next door (here). Penny: Morning, Sheldon! Come dance with me! Sheldon: No. Penny: Why not? Sheldon: While I subscribe to the Many Worlds theory, which posits the existence of an infinite number of Sheldons in an infinite number of universes, I assure you that in none of them I am dancing. Penny: Are you fun in any of…