Regret travels differently depending on which direction you face. The 20th-century American philosopher L.J. Savage, who formalized much of modern decision theory, had to watch helplessly as his own 'sure-thing principle' — the elegant idea that if you'd choose X regardless of what a hidden variable turns out to be, you should choose X before you know it — collapsed against simple human psychology. What Savage couldn't account for was that people systematically weigh anticipated regret over errors of commission (things they did) far more heavily than errors of omission (things they didn't do). But here's what's actually interesting: that asymmetry flips over time. Research by Gilovich and Medvec found that in the short run, people regret actions — but across a lifetime, they regret inactions far more. The decision that feels safe today because you didn't pull the trigger accumulates weight that the bold choice — even if it failed — rarely does. This matters practically: the 'safe' choice isn't emotionally neutral. It has a deferred cost that standard expected-value calculations never charge up front.

Trace back a decision you framed as 'not yet' or 'maybe later' — what has it cost you in the years since you first deferred it?

Drawing from Decision Theory / Behavioral Economics — L.J. Savage, with Thomas Gilovich & Victoria Medvec