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Hindsight bias

In one line: 'I knew it all along' after the fact.
Evidence
Fischhoff (1975): knowing the outcome makes people think it was more predictable than it was.
Watch: Lucky or Good?: Judge the Plan, Not the Outcome · open on YouTube · 1-minute Short

Charts look obvious afterwards. That's why a written plan before the trade, and a journal, help: see Trading journal.

Related

Sources & studies

  1. Fischhoff (1975), Journal of Experimental Psychology: HPP

PsychologyBiases

Last checked: 2026-11-04 · Educational, not financial advice.

Education only, not financial advice. No signals. Backtests are hypothetical: real trading can be worse. Past results don't predict future results.