When "Top Shot," the History channel marksmanship competition, closes out its fourth season on May 1, the person who successfully shoots the most targets in the final showdown will win. The one who doesn't will not. This seems obvious and unremarkable. But by reality television standards the show's reliance on objective, observable results makes it quietly subversive -- as quiet as anything featuring a bunch of gunslingers blasting exploding targets can be anyway.

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