Mr. Koblin skillful depiction of nearly 200,000 concurrent flights is based on FAA data over a 24 hour period. Imagine being in an aviation industry decision making role responsible for the allocation of resources across the US based on flight data. Complementing the mounds of textual reports on this data is Aaron's visualization which brings to life the dynamics of flight volume which constantly change. Look at the burst at 6AM EST when most flights take off from the east coast, and 4 hours later see the similar bursts on the west coast.
Aaron leverages concepts from Gestalt theory of emergence. Gestalst Psychology investigates the way our mind makes sense of visual stimuli in a world of ongoing change and endless variety, but that's a topic for another discussion.