But if history is any guide, foreign policy as a political-science field experiment or what-me-worryism will yield some ugly results.

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But it was not regarded as a great success by the players - and the experiment was dropped after one season after no decisions made by on-field umpires were reversed.

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When set to Manual, consumers can experiment with features such as slower shutter speeds, depth-of-field and even focus.

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Tebow was waived by the Jets on Monday morning when he showed up at the team's facility ready to work out, the end of an embarrassingly unsuccessful one-season experiment in New York that produced more hype and headlines than production on the field.

WSJ: Tebow left to wonder what's next after cut by Jets