Watch the red and blue dots and see how
they move in the animation below
The red and blue dots optical illusion
When the background moves, the dots also seem to move, but as you can see, when the background is removed, the dots are not moving at all.
This illusion was created and is being studied by PhD student Peter J. Kohler and his team, from Dartmouth College.
Friday Illusion: How to move a dot with your mind, New Scientist>>