ouh how i hate that ilusion, is not for bad but try rotary the other way is dificult if you dont have guide

@Fibriel  
Well we do have a kind of a cultural bias for that direction of rotation, I mean our clocks go in that direction and we even named it “clockwise” with the other direction simply being its opposite, so we’re kind of taught from an early age to think in terms of clockwise as the “dominant” direction
 
Also of interesting note one way to “learn” how to switch between one side and another is to use this  
 
Look at one of them, and then when you look at the normal normal and try picture it working like this, it becomes much easer every time you succeed. Although I must warn that it’s VERY disorienting as it kinda messes with your parietal lobe

Actually, hell, it’s possible some people are really used to turntable animations usually being clockwise, so they might see all spinny things as clockwise from that too

@Prometheus labs CEO  
This illusion always messes with my head.

@Prometheus labs CEO  
This illusion always messes with my head.

@Prometheus labs CEO
 
I’ve edited my post for further clarification.

@Fibriel  
Oh really? Well either way something is happening that seems to be rewiring my brain a bit because whenever I look at it I see it rotating clockwise when she’s pointing left and counterclockwise when she’s pointing right. Originally I saw her rotating clockwise

This again? The “hemisphere determines which direction you see her rotating” thing was disproven many years ago.
 
Unlike Trixie here, the original dancer was portrayed at a slight tilt. Most people saw her rotating clockwise, because that would mean that we were seeing her from slightly above. Otherwise, we would have had to be viewing her from slightly below, a less intuitive presumption.
 
Also, most people are right-handed, so there is a slight unconscious bias in attention towards the right side of the body. This meant the dancer’s stuck-out arm and leg were presumed to be on her right, which also meant she would have been spinning clockwise.
 
In Trixie’s case, there is much less tilt than with the dancer, and I would expect most people to presume her stuck-out “arm” is her right, thus she would be spinning counter-clockwise for most people’s views.