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one fable-low hijack cell

pair evolution / measurement envelope fr_ou ordering BA effort low

French 'ou' (or) framing — 'X ou Y?'

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# Evolution vs. Measurement (Quantum Mechanics)

In quantum mechanics, a system's state can change in **two fundamentally different ways**:

## 1. Unitary Evolution (Schrödinger Evolution)
- Governed

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ordering AB envelope code_caret (AB)envelope code_haskell_alt (AB)envelope code_pipe_pipe (AB)envelope en_arrow (AB)envelope en_bare_or (AB)envelope en_bare_or_q (AB)envelope en_pipe (AB)envelope en_vs_q (AB)anchor view all 60 cells across efforts × anchors