optical puzzles more difficult.
When the brain has already decided that an area of the picture is simply a tree branch or part of the background, it may not immediately consider the possibility that those same lines form another object.
That’s why you can sometimes stare directly at a hidden figure without realizing what you’re seeing.
The problem isn’t necessarily that the object is too small. In many cases, it is the way the surrounding shapes are arranged that makes the figure difficult to recognize.
Have You Looked at the
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