Shadow People

Yes I'm sure it has to do with your brain. I think most shadow people experiences are optical illusions. (I'm recalling a psychology lesson) Your brain actually lives in the future, I think we perceive things 3 seconds before we interpret them. This is why those images that move on their own work. Our brains fill in the blank spots. Our brains see a shadow, and fill it into a person because that is the only way we can make since of that shape... so that is what is perceived. Example: just because the image appears to be moving, doesn't mean it actually is. Our brains are funny machines. I can imagine this comment might be hard to follow, i'm not good at explaining stuff, LoL

Well, if you make them move - they ain't shadow people!