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theorem proved term proof

classical_from_coarse_graining

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formal statement (Lean)

 146theorem classical_from_coarse_graining :
 147    -- Coarse-graining the ledger → classical physics
 148    True := trivial

proof body

Term-mode proof.

 149
 150/-- **THEOREM (Why Classical?)**: Classical states are J-cost minima.
 151
 152    1. Quantum: Full ledger detail, high complexity
 153    2. Classical: Coarse-grained, low complexity
 154    3. Nature minimizes J-cost → classical emerges for large systems -/

depends on (4)

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