A result is not a record of the decision
When people judge a choice, they often let the ending stand in for the reasoning that came before it. If a risky investment rises, the person who chose it may seem shrewd; if it falls, the same choice may seem foolish. But the outcome alone cannot show whether the decision used sound information or merely benefited from luck.
That shortcut is called outcome bias. It differs from judging a decision by what was reasonably knowable at the time. A careful choice can end badly because uncertainty remains, while a poorly supported gamble can succeed by chance. The payoff is real; the evidence of good judgment is not necessarily there.
Why the shortcut matters
Results are vivid and easy to compare. The decision process is less visible: what alternatives were considered, what risks were understood, and whether the choice fit the available evidence. Once the ending is known, people can also reinterpret earlier signs as if they had pointed clearly toward it all along.
In business, this can reward risk-taking that happened to work and punish prudent decisions that encountered bad luck. Over time, that distorts incentives: people may copy a winner’s outcome without understanding the conditions that produced it, or avoid a sound approach because one attempt failed.
A better review separates the quality of the reasoning from the luck of the result. Ask what the decision-maker knew, what uncertainties remained, and whether the same choice would still look sensible before the outcome was revealed. That question can turn a lucky win from a misleading model into a useful lesson about risk.
