cool but i don't understand the overboard reactions, this is the exact same principal as something like a zoetrope, or an animated scribble in a child's notebook.
hell every movie theater operates on the same principal.
Not many people get to play with a strobe that is in sync with a rotating object. Hell, I'd be surprised if they knew what a zoetrope was.
Still cool though, even moreso that they put the effort in in the first place.