160 "J-cost minimization selects a direction" 161 162/-! ## Black Hole Unitarity -/ 163 164/-- The black hole information paradox tests unitarity: 165 166 Does information escape from black holes? 167 168 RS answer: YES, via ledger conservation. 169 The ledger extends across the horizon. 170 Information is never truly lost. -/
depends on (10)
Lean names referenced from this declaration's body.