Has anyone debunked that famous optical illusion?

[TheAntiRelative]

You can just google it so I won't get in trouble for linking to it.

Anyone ever looked at it? It looks like just optical illusion silliness to me but is there any possibility of some other sort of thing going on?

Was just wodering if anyone ever did anything meaningful there in the way of debunking.

 

[Ivan Seeking]

You wouldn't get in trouble. Note that I can actually go there and see it. That helps a lot.

https://www.physicsforums.com/showthread.php?t=59687

I closed the old thread in lieu of this one.