Don't believe it? Try opening up the image in Paint or another image editor and put the 2 tiles side by side.
Is this a perfect square or not. We think it is.
KST thinks this is a spiral. Do you agree?
This is a pretty cool illusion. All the figures are actually the same size.
Do you see an Eskimo or an Indian?
Do you think the red lines are wavy? Well they arn't.
Once again, these lines are straight as an arrow.
These lines are straight as an arrow.
Here is another one that will make your eyes fall out of your head.