wisdom-biases

The $500K Career Mistake Maintenance Engine: Leon Festinger’s cognitive dissonance research progressively documented one of the more consequential cognitive distortions in modern decision-making: adults systematically rationalise past decisions to reduce dissonance, with the rationalisation pattern producing sustained commitment to suboptimal career choices, investments, and relationships that cumulative cost analysis would not support. The mechanism operates … Read more

The Same Number, Two Decisions: When physicians are told a surgery has a “90 percent survival rate,” roughly 84 percent recommend it to a patient. When the same physicians are told the same surgery has a “10 percent mortality rate,” only 50 percent recommend it. The data is identical. The framing has produced a 34-percentage-point … Read more

The Counterproductive Evidence Effect: Brendan Nyhan and Jason Reifler’s backfire effect research has progressively documented one of the more uncomfortable findings in modern political and persuasion psychology: presenting corrective evidence against false beliefs can paradoxically strengthen those beliefs in some contexts, with the “backfire” effect observed in approximately 20 to 30 percent of corrective-information interactions … Read more

The Vivid Story Override: Daniel Kahneman and Amos Tversky’s base rate neglect research progressively documented one of the more consequential cognitive distortions in modern decision-making: adults systematically underweight statistical base rate information when vivid individual cases are available, with the vivid case typically dominating judgment despite carrying substantially less informational content than the statistical base … Read more

The Time Tax: When asked whether they would prefer $50 today or $100 next month, the majority of adults choose the smaller, earlier reward. When asked whether they would prefer $50 in 12 months or $100 in 13 months — mathematically the same decision, shifted forward by one year — the majority flip to the … Read more

The Asymmetric Mirror: When retail investors are asked to explain their winning trades, 82 percent attribute the result to skill; when asked to explain their losing trades, 78 percent attribute the result to market conditions, bad luck, or external manipulation. The two attribution rates would, in a calibrated mind, be equal. Their inequality is the … Read more

The Reliable Overrun: Across more than 500 megaprojects analysed by the Oxford Programme on Major Infrastructure Risk, the average cost overrun was 90 percent, the average schedule overrun was 80 percent, and the average benefit shortfall was 40 percent. The pattern holds for IT projects, kitchen renovations, dissertation completion times, and the lunch you confidently … Read more

The Hindsight Trap: The same decision — identical reasoning, identical inputs, identical evaluation framework — is judged as “brilliant” or “reckless” depending entirely on whether the outcome happened to turn out well. In controlled experiments, judges rated the same trading decision 3.2 times more favourably when the trade made money than when it lost — … Read more

The Crowd Engine: In January 2021, retail investors collectively drove GameStop’s stock from $19 to $483 in 21 trading days, then watched it collapse to $42 over the following month — producing roughly $8 billion in retail losses from investors who bought into the rally past its early stages. The pattern was not an aberration. … Read more

The Asymmetric Memory: Consumers receiving a service experience rated as 9 out of 10 remember the experience moderately favourably, with roughly 75 percent recall at six months. A consumer receiving a 3-out-of-10 experience remembers the experience vividly — roughly 95 percent recall at six months — and shares it with an average of 14 other … Read more