Look at the following picture......Is the girl turning clockwise or anticlockwise??
Actually.......it can turn in the direction that you want......try focus it...... ;D
Haha, initially I can only see clockwise. Took me a while to see it the other way.
You know, once you get the hang of it, you can make her change directions pretty quickly. It's kind cool.
I've seen this pictures ages ago, (I thought it's in secondary school), I could see it in whatever direction I want.
But now I only see it in clockwise, no matter how hard I tried. I surrender.
I saw it years ago, both directions. Today, I can only see anti clockwise, brain doesn't function well today!