The black dots are the Hermann grid illusion, I think. http://en.wikipedia.org/wiki/Grid_illusion http://en.wikipedia.org/wiki/Grid_illusion I'm not seeing an

The black dots are the Hermann grid illusion, I think. http://en.wikipedia.org/wiki/Grid_illusion http://en.wikipedia.org/wiki/Grid_illusion I'm not seeing any motion, but there are some illusions that look like they're moving and it has something to do with the way they are light and dark on opposite sides, although there must be more too it than that: http://en.wikipedia.org/wiki/Akiyoshi_Kitaoka http://en.wikipedia.org/wiki/Akiyoshi_Kitaoka