Another Brain Short-Circuiter

This one, like the previous one, is to be found on Anton Feestra's "Confuse Your Brain" site. This time, it illustrates some processing glitches inherent in the design of the human Visual Cortex. Which should tell people who hold to the "argument by design" tenet of Creation "Science" something about either the sense of humour, or the fallibility of the Almighty. Personally, I'm an Agnostic who leans towards Theism, but consider the "Theory" of Evolution to be as well proven (and as ill-understood in the finer details) as the "Theory" of Gravity.

The lines are straight, but they're also parallel. Measure them and see. I did.