# Physics Must Now Grapple With Indefinite Causality

- slug: physics-must-now-grapple-with-indefinite-causality
- date: 2026-03-26
- category: Quantum Computing

A team of physicists at the University of Vienna has demonstrated, with 18 standard deviations of statistical significance, that the notion of events happening in a fixed sequence — A then B, or B then A — may be a classical assumption the universe does not share.

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