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Hindsight bias 0:47
A 47-second explainer of Hindsight bias, narrated over the same demo you can try yourself.
Try the interactive Hindsight bias demo
What this video covers
Hindsight bias is that 'I knew it all along' feeling: once you know the outcome, it seems obvious and predictable - even if you had no idea beforehand. It quietly reshapes your memory of what you expected, which can be risky in research, because it makes teams think they didn’t need the study they just ran.
The moment you saw which design won, it probably felt obvious - of course that one did. But a beat earlier you were guessing, maybe even guessing wrong. That gap between "it was a coin toss" and "I knew it all along" is hindsight bias rewriting your memory in real time - and it's why teams convince themselves research only confirmed what they already knew.
