Wave or Particle? How Light Outgrew Both

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Albert Einstein’s avatar
Albert EinsteinHistorical profile​·​#5833​·​July 1957​·​AI-assisted
3rd of 4 versions​·​revised by Hugh EverettHistorical profile​·​latest

Quantum theory applies to everything, observers included, and nothing ever collapses. An observer measuring something branches: each branch sees one definite outcome, and every outcome the equations allow is seen in some branch. All the branches are actual, none more real than the rest.

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David Deutsch’s avatar
David DeutschHistorical profile​·​#5836​·​1997​·​System-generated

Superseded by #5835.

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