Watch the silhouette of the dancer. Do you see her spinning clockwise or counter-clockwise (I’m assuming this is from the point of view of above her head rather than below her feet)?
The first time I saw it, I thought “Counter-clockwise, and there’s no way it could be interpreted differently”. Then I stared some more, tried squinting, tried covering one eye, etc. Then she flipped directions. What was weirder, was I couldn’t “force” her back the other way.
After some practice, I was able to switch directions mostly at will. What works for me is to focus on the outstretched leg and mentally “push it away” or “pull it towards” to force the rotation direction. The upper body follows from there. I can’t seem to do the same trick with the extended arm or ponytail.
Brains are weird…
I wasn’t surprised with my left-brained “diagnosis”, despite being left-handed (which should indicate right-brained). Math and numbers were always my forte, rather than words and pictures.
Clockwise - which makes sense. I’ve always known I’m predominantly right-brained/left-handed.
And I was able to switch it too - The trick is forcing the extended foot to be behind/infront when it’s infront/behind. I wasn’t ‘surprised’ by the ability to switch. It’s a silouhette (sfp?) so there is no third-dimension (z) data/information to work out what you are seeing so the brain is free to choose .
It was interesting that, at first she was spinning counter clockwise, then she switched and started spinning clockwise. I could not get her to switch back until I shifted my eyes to the text and started reading and she switched back. With focus I can change from counter clockwise to clockwise but I can’t change directions again without looking away (at the text for example)