Illusions

As a result of doing anything I could to distract myself so I don't have to write one of my papers, I came across these cool optical illusions. I'm sure you may have seen some of them, but I still think they're cool no matter how many times I check them out.

Count the BLACK dots.

Focus on the black dot in the center and move your head close to and away
from the computer screen

These last two are crazy because they are actually still pictures.