If your eyes follow the movement of the rotating pink dot, the dots will
remain only one colour - pink.
However if you stare at the black “+” in the center, the moving dot
turns to green.
Now, 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.
It's amazing how our brain works. There really is no green dot, and the
pink ones really don't disappear.
Proof enough that we don't always see what we think we see...
