I'd like to have it asplained to me how it works.
It's suggestion and presumption Butch, they are all spinning at the same rate, creating the same shadows at the same time, so the brain thinks they are all spinning the same.
Pray tell why, Jeff?
er.. no Andy. the two outside ones are supposed to look like they are spinning in different directions. The middle one will look like which ever one you last looked at. Which in turn is effected by the coloured lines. As you switch from left to right the middle one changes direction. Cool.
Yes, but regardless, the one on the left and the one in the middle are spinning the same direction. It's suggestion that makes us think it's going the other direction.
Actually, none of them are spinning. They are two dimensional and any impression of them being three dimensional and 'spinning' is an illusion.