A new study shows how much visual input the brain processes, but we never consciously see. Every day, when you open your eyes in the morning, there is a huge flood of visual information from the external world into your mind.
Your brain edits this flood down to a trickle of things that are highly relevant: Where is the dressing-gown? Where is the curtain? Where is the door? The rest of it–the state of the carpet, the shadows on the ceiling–all gets ignored.
Or does it?