information while ignoring less relevant details.
Without it, the world would overwhelm us.
Imagine hearing every conversation in a crowded room equally.
Imagine noticing every leaf on every tree while walking down a street.
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.
