Is this dancer spinning left or right? This is even crazier than the dress!
Forget the dress!
Is this dancer spinning clockwise or counter-clockwise?
en.wikipedia.org
Counter-clockwise, right?
At least that's what I thought at first, but when I looked a second time, she was spinning clockwise.
So look again. Which was is she really spinning?
It all comes down to whether you think she's spinning on her right foot or her left foot. Called a kinetic, bistable optical illusion, this example was created in 2003 by web designer Nobuyuki Kayahara per Wikipedia.