More specifically, imagine the simplest case of a population of a constant size - say a million (the approximate size of the Holy Land at the time of Jesus).

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The expectation is that the Fed, weary of jumping the gun on QE3, will instead shift the composition of its massive portfolio, keeping size constant.

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And then there is the near constant temptation of king-size burgers, thick shakes and other high-calorie foods.

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The rise of social media and the consequent economic upheaval in media markets means that companies of all sorts and size are being pushed into the role of constant publisher and content creator.

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Companies that were quick to spot the move to constant computing but misjudged the resources needed are now scrambling to size themselves correctly.

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Barely 5ft 9ins and less than 13 stone, he's a midget in a land of giants, but what he lacks in size he more than makes up for with mouth, a constant chatterbox on and off the field, fired by a perceived sense of injustice at the way his country has been treated by the rugby elite.

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The one constant of the iPhone for its five-year history has been the screen size.

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