Ego, emotion, social pressure, and inertia hijack a decision before reasoning ever starts.
None of the four are reasoning — they’re pre-reasoning, setting the frame before thought arrives. Which is why arguing with them after the fact always feels like it should work and never does.
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example-of →Most decisions are made by defaults, not by choice — the work is converting automatic reactions into deliberate ones.The four named defaults are the concrete inventory behind the abstract claim.
← has exampleThe emotional brain receives the signal first and can commandeer behaviour before the thinking brain has the facts.
The best-specified of the hijackers, and the only one with an anatomical account rather than a behavioural label.
← extended byBiases don't add, they multiply — several small pressures acting together produce outcomes none would produce alone.Parrish enumerates the hijackers one at a time. Munger’s contribution is structural: it is the confluence that does the damage, which is why single-bias debiasing so rarely helps.
← contradicted byEveryone's money decisions make sense given the era and cohort that formed them — 'irrational' usually means 'calibrated on a different sample'.Parrish treats the hijackers as distortions of reasoning. Housel says the same behaviour is correct updating on a different data set. They cannot both be describing the same mechanism, and the difference decides whether you fix the person or the environment.