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
1 comment:
Or if you try it after a long hard day working the pink dots, green dots and black cross all merge into 1 large pink and green elephant with a black eye winking at you and your brain implodes :-)
Post a Comment