#Hindsightbias

After every major event—an election result, a surprise business failure, or even a football match—how often do we hear people say, “I knew that would happen”? This feeling of inevitability after the fact is so common that psychologists have given it a name: hindsight bias, or the “knew-it-all-along” phenomenon. Far from being a harmless quirk, hindsight bias shapes how we recall and learn from experience, affects our judgments, and even influences fields as diverse as medicine, law, and policymaking. For Thai readers navigating rapidly changing global events, understanding hindsight bias can help us make more rational decisions and avoid costly mental mistakes.