In 2013, a team of expert radiologists at Harvard reviewed lung scans for subtle abnormalities. What they didn’t know was that the researchers had embedded a small, unmistakable image of a gorilla inside one of the scans.
Eighty-three percent of the experts didn’t see it.
Not because they were careless.
Because their expertise made them focus so precisely on what they expected to find that they filtered out anything that didn’t fit the pattern.
When the researchers later revealed the trick, the radiologists were stunned.
One said, “I looked right at it. My brain refused to register it.”
Bias isn’t a flaw in the system.
It is the system.
It shapes what we notice, what we ignore and what we falsely assume to be true.
Most organisations try to fight bias with announcements about impartiality, fairness or “leaving assumptions at the door”. But the truth is simpler. Humans don’t remove bias. They work with it.
The real question is not “How do we eliminate bias?”
It’s “How do we design decisions that take bias into account?”
- structure choices
- slow the thinking down
- add a second set of eyes
- show options side by side
- diversify the people in the room
- make the hidden assumptions visible
Good decisions don’t come from people who think they have no bias.
They come from people who know exactly where their blind spots live.
You don’t overcome bias by pretending you don’t have it.
You overcome it by designing for the way humans really think.
Related Workshops: Unconscious Bias Workshop | Culture Lab | Delta Echo India
