Definition
A cognitive tendency in which a person, after learning the outcome of an event, believes that outcome was predictable or obvious before it happened. In aviation human factors and accident analysis, hindsight bias distorts judgment of pilot decisions by causing reviewers to underestimate the uncertainty the pilot was actually facing at the time.
Plain English
Once you know how something turned out, it feels like you should have seen it coming. Hindsight bias is that 'I knew it all along' feeling, even when the outcome was not obvious in the moment.
Context Anchor
Seen in aviation human factors, accident review, safety reports, and post-flight debriefings.
Derivation
Hindsight literally means 'seeing behind' — looking back at something after it has happened. Bias means a leaning or distortion in judgment. Together: a distortion that creeps in when we look back at past events knowing how they ended.
Why Pilots Care
It can lead pilots to unfairly criticize their own or others' past decisions and overlook the real-time uncertainties present during flight.
Analogy
It is like watching a recorded game after you already know the final score. Plays that seemed uncertain at the time can look obvious because you already know how they turned out.
Intuition Check
Hindsight bias is not the same as learning from a mistake. Learning asks, “What information was available at the time?” Hindsight bias assumes the outcome should have been clear all along.
Example Sentence 1
Reading the accident report, it's easy to fall into hindsight bias and assume the crew should have diverted earlier than they did.
Example Sentence 2
During the safety meeting the instructor reminded the class that hindsight bias often makes past errors look avoidable when they were not.