Pessimism Bias

Optimism bias is famous; its sibling works quietly in the other direction. Some minds systematically overpredict doom — the worst reading of the symptom, the darkest forecast for the venture, the certainty that the silence means rejection. If optimism is a tax on the hopeful, pessimism is a tax collected in advance on disasters that never arrive.

The bias wears the costume of intelligence. Predicting disaster sounds serious; predicting success sounds naive. The pessimist feels like the adult in the room — and is wrong with the same regularity as the optimist, just more gloomily.

The cost is different in shape: not the crashed venture, but the unstarted one; not the failed approach, but the approach never made. Optimism's losses are visible and counted. Pessimism's losses are invisible and uncounted — the whole category of things that never happened.

The corrective is the same ledger the optimist needs: record your forecasts, check them later. Most pessimists, shown their own record, discover they have predicted fifty of the last two disasters. Adjust the dial. Reality is not on either side — it is in the record.