The Expert Trap

In The Expert Trap, author Simon Blackwood explores the measurable gap between how certain expertssound and how often they turn out to be right. Rather than a critique of arrogance or ego, this book uncovers astatistical failure that sits underneath collapsed hedge funds, wrongful medical diagnoses, failed forecasts, andstartup burn-rate fantasies-moments where the people involved were not villains, but were dangerouslymiscalibrated.Drawing on behavioral science and decision research, Simon Blackwood reveals how overconfidence operatesthrough three distinct patterns-overestimation, overplacement, and overprecision-each creating a differentkind of damage. The book dismantles the gap not through abstract theory, but through forensic case studies: theNobel laureates at Long-Term Capital Management who watched billions evaporate in 1998, surgeons whosediagnostic certainty correlates weakly with actual accuracy, political and financial forecasters whose predictionsgo unchecked, and founders whose launch dates harden into fiction long before the underlying uncertaintyresolves.- Why the most credentialed professionals fail most confidently at the worst possible moments- The collapse of Long-Term Capital Management, staffed by Nobel Prize winners who miscalculated theirown risk exposure- How physicians’ stated confidence in diagnoses tracks far more weakly with accuracy than patients assume- The three measurable forms of overconfidence that operate independently across domains- Why forecasters rarely face public audits of their past predictions, and what happens when someoneactually checks- How startup founders treat launch dates as facts before they’ve earned the right to be plans