Perception

What were your impressions of the lecture and Test from Dr. Gillian? In your opinion, what should the average person know about how our brain perceives the world? What are the larger implications of this?
My impression of the lecture and the test were that humans really do shut out things easily and quickly get used to things, like your walking back and forth in front of the screen, and ignore it. I also think that we pay attention to things, but if they look simmilar to something we already know. I think the average person should be able to know what they see and why they see it. If you can't understand why you see it then, you can't know what you're seeing. That we could completely miss any important event occuring simply because we're programmed not to.