Optical Illusions
Check these out. This one is more your garden variety amazing eye trick.
Whereas this one is just...astounding.
How much of what we see is just an illusion? Not a delusion, mind you -- we're really seeing something that's there -- but it's so heavily processed by our brains that what we're seeing just isn't what we're seeing.
Makes you wonder!
(Via Healthbolt.)
