No Matter How Many Times I Try,

I can not convince myself that these two tables,

 have the same size tops, but they do, both are parallelograms with identical lengths, widths, and angles, I kid you not, our ability to perceive depth, combined with perspective in illustration, can produce some extremely weird results, the Shepard's tabletop illusion shows two illustrated tables which appear to be quite different in dimension, one long and thing, the other closer to a square, what's essentially going on here is that our brains want to perceive things in 3D, this from the NYU Centre For Neural Science, ‘there is an opportunity to interpret a drawing or an image as a three-dimensional object, we do. The two table tops above have precisely the same two-dimensional shape on the page, except for a rigid rotation. Nobody believes this when they first look at the illusion. The illusion shows that we don't see the two-dimensional shape drawn on the page, but instead we see the three-dimensional shape of the object in space', scroll down to see the proof,

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and if you still do not believe me here is the proof, it makes me wonder about how good some 'eye witness' statements really are!