Someone find a fun game to play! During the mean time look at these optical illusions:
Are the horizontal lines parallel or do they slope?
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, the moving dots turns to green.
The following pictures are NOT animated.
Stare at this for 15 seconds then look at a white wall. what/who do you see?