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Chapter 04 of 5

Branching Realities

Everett’s Many-Worlds alternative to the collapsing wave function.

  1. The Rival

    A New Challenger

    In 1957, physicist Hugh Everett III proposed a radical alternative to the Copenhagen Interpretation. He aimed to remove the need for a 'wave function collapse' entirely.

  2. Core Concept

    Universal Wave Function

    Everett argued that the entire universe is a single, massive quantum system. Everything within it follows the same laws, from atoms to observers.

  3. Mechanism

    No Collapse Needed

    Unlike Bohr, Everett claimed the wave function never actually disappears or collapses. It simply continues to evolve smoothly forever.

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Could you answer this?

In the Many-Worlds interpretation, what happens to the wave function when a measurement occurs?

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🐈 Schrödinger's Cat: The Measurement Problem

  1. 01The Copenhagen OrthodoxyExamine the abstract rulebook of quantum mechanics before the box was ever opened.
  2. 02Reductio ad AbsurdumSchrödinger’s dark thought experiment: a cat, a vial, and a quantum trigger.
  3. 03The Measurement ProblemThe logical crisis: why does looking at something change what it is?
  4. 04Branching RealitiesEverett’s Many-Worlds alternative to the collapsing wave function.
  5. 05The Unclosed LoopWhy the paradox remains the most famous 'incomplete' idea in physics.