# Quantum foundations

- kind: region

The theory works perfectly and nobody agrees what it says about reality.

## Problems

- [The measurement problem](/wiki/Problem:measurement-problem.md) (open)
- [Local realism (Bell's theorem)](/wiki/Problem:bell-local-realism.md) (refuted)
- [The ultraviolet catastrophe](/wiki/Problem:ultraviolet-catastrophe.md) (solved)

Part of [Physics](/wiki/Continent:physics.md).

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