"That's... interesting, but not exactly what I was asking. If he can play the accordion and no one notices, can he also turn on iTunes and have no one notice even though the computer is playing the music? What happens if he releases a cageful of excited hummingbirds into a room, do people start noticing them when they get a certain distance away or after a certain length of time or what? Can he steal objects - big obvious objects - without anyone paying attention? What if you're concentrating on the object at the time, what exactly happens to your attention or your cognition around it?"