Their other hits include Ain't Nothing Like The Real Thing, one of several tracks written for duo Marvin Gaye and Tammi Terrell, and Diana Ross's first solo single, Reach Out and Touch (Somebody's Hand).

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Computer models are often used for simplicity, or when studying the real thing just ain't viable, but most look at an isolated process.

ENGADGET: Scientists create first computer simulation of a complete organism

Governmental "bacon, " unlike the real thing, isn't good for your health.

WSJ: 'Voter Suppression,' Debunked

Even better than the real thing: It won't try to eat you.

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The appeal of the David-and-Goliath plot is intensified by solid dramatic carpentry, and by the fluent back-and-forth between live and archive in the heat of street battles and mass demonstrations, you can't tell if you're watching simulations or the real heart-pounding thing.

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"Maybe you don't want your daughter to dress like that, but that's the real thing, " says top marketer Light.

FORBES: You Want Data With That?

"Pitt is a handsome guy, but if you saw him in real-life or HDTV, which is roughly the same thing, you wouldn't think he was so beautiful, " Swann says.

ENGADGET: The Olsen Twins don't look so hot on HDTV