If your eyes follow the movement of the rotating pink dot,
the dots will remain only one color, pink
However, if you stare at the black ' + ' in the center of the picture,
the moving dot turns to green .
Now, really concentrate on the black ' + ' in the center of the picture.
After a short period, all the pink dots will slowly disappear,
and you will only see only a single green dot rotating.
If you lose your concentration on focusing on the black ' + '
(by tracking the movement of the green dot), the pink dots will reappear.
It's amazing how our brain works!
There really is no green dot, and the pink ones really don't disappear ...
