And that in turn means we must innovate like never before, finding solutions to problems previously undreamed of.

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Obama's economic stimulus package failed to stimulate the US economy and increased the US's economic deficit to heights undreamed of by his predecessors.

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Boarding is marketed as a lifestyle choice, and schools now have to provide a range of activities, amenities and creature comforts undreamed of by previous generations.

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What this is all suggests is that the human spirit in its most daring moments has actually manifested physical attenuations of energy expenditure, reducing the tally of total energy consumption by exponential multiples undreamed of a few generations ago.

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They cast whole regions of the world into upheaval, creating whirlpools of instability from which undreamed-of threats arose years later.

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