As consumer habits change, Amazon has been adjusting its strategy to sell all kinds of media as downloads, rather than in shrink-wrapped packages.

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Chances are low, but learning from each setback, working together as a team, playing aggressively and adjusting your strategy mid-game if need be, greatly increase your likelihood of success.

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In addition to adjusting its manufacturing strategy, DELL is trying desperately to develop a footprint in the services business.

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But the strategy worked, because United States agencies were allowed to proceed by trial and error, continually adjusting their policies over time in response not to ideology but to hard measurement of the results against societal goals.

NEWYORKER: Testing, Testing