I would post the GIF here, but it would probably give someone a headache or vertigo or an epileptic seizure or something.
Oh, wait, I can put it below the cut so folks can close it off at will.

So, which way is the dancer spinning? Well, in point of fact, she’s not spinning in any given direction that can be actually perceived, being only a silhouette, but which way does your brain think she’s spinning?
The ostensible answer is that if you say “counter-clockwise,” you’re thinking more with your logical left brain (and are more likely right-handed?) while if you say “clockwise,” then it’s your artistic right brain that’s running the show.
Me? I see it initially as counter-clockwise, but if I glance away then come back, it’s changed. Don’t know if that means I’m a well-balanced and fully integrated, or just really confused. My money’s on the latter.
(via SEB)
Clockwise, but trying to see how to make it seem counter-clockwise.
Clockwise…can’t make it go the other way.
As I said, I first saw it as c-c, then as c, then it would randomly change. Now I’m seeing it only as c.
Margie claims she can make it change direction at will. 🙂