help you notice details you previously overlooked.
And when the hidden face finally becomes visible, something interesting usually happens.
It becomes extremely difficult not to see it again.
What once looked like nothing more than trees and shadows suddenly forms an obvious face, leaving many viewers wondering how they could possibly have missed it in the first place.
That reaction is part of what makes hidden-image puzzles so entertaining.
They demonstrate just how strongly perception depends not only on what our eyes see but also on how our brains interpret
