Are you a robot?

Tangentially related: I wonder whether pages could use visual illusions for captchas.

For example https://michaelbach.de/ot/mot-feetLin/index.html where the robot --I think-- would fail to see the illusion.

Though, I guess there isn't any advantage or the would be used frequently.

I wonder if all humans would see it.

Tangentially related: I wonder whether pages could use visual illusions for captchas.

For example https://michaelbach.de/ot/mot-feetLin/index.html where the robot --I think-- would fail to see the illusion.

Though, I guess there isn't any advantage or the would be used frequently.

I wonder if all humans would see it.

oh that's weird!

Good one.

Regretfully I suspect the AI algorithm for the robot would be pretty easy to teach gamut of visual illusions to watch out for!

I can't not see them as steps.

I tried to see them moving smoothly, but even knowing they are, I can't see it unless I turn the contrast down.

Like you, when I switched focus from the middle, the feet changed from a smooth movement to tiny steps.

Is that the same sort of principle with some Christmas lights, e.g, the ones with lights that seem to travel along the length of the wire, yet they are only flashing? 

I tried that link and got an error code and it said it wasn't found. 

What is the thing you thought would be good?

Those things are mad! It's cool to be able to turn down the contrast and see the trick!