Your brain filters information constantly.
The downside?
Sometimes it filters out exactly what you’re looking for.
In this puzzle, your mind quickly categorizes the entire grid as:
“A bunch of d’s.”
Once that assumption is formed, finding the rare “b” becomes significantly harder.
Your eyes may pass directly over a hidden “b” without consciously registering it.
Why Our Eyes Don’t Actually See Everything
Many people believe vision works like a camera.
It doesn’t.
A camera records everything within its frame equally.
Human vision works differently.
Your eyes collect information, but your brain decides what receives attention.
Researchers have demonstrated this repeatedly through experiments involving inattentional blindness.
One famous study asked participants to count basketball passes made by players wearing white shirts.
While focused on counting, many participants completely failed to notice a person dressed in a gorilla suit walking through the scene.
The gorilla was visible.
