In today's competitive business world, margins are being compressed, but speed is still a source of margin.

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They even allow you to set one number for areas where the speed limit is under 50 and another margin of excess for over 50.

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This margin depends on the size and speed of an aircraft, and re-ordering the queue can minimise the delay before all the planes get into the air (mathematicians call this the departure problem).

ECONOMIST: Algorithms

The speed at which things can go wrong and the margin for error correction in a car is radically different from airplanes under most conditions, and the cross-cumulative effects of contextual disturbances means that car companies cannot really simulate everything in advance.

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At the same time Fairpoint, under Chief Executive Paul Sunu and Tony Tomae, recruited last year as chief revenue officer, should see rising revenue from higher-margin customers like hospitals and colleges and cellphone towers that require high-speed broadband communications.

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