I doubt that. It’s limited in some way or another. There may be disagreement about the extent of those limits, but I think this is getting away from the main issue anyway.
That can’t be true. For a start, when you cross the street, do you look first? Or do you amble forward senselessly and wait to see if you come to with a bleeding leg or worse?
What happens when a person dies? Is reality somehow altered by the loss of their perception of it? What was here before humans evolved our current set of perceptive abilities?