Last month, a judge said Ms Spears, 25, showed "a habitual, frequent and continuous use of controlled substances and alcohol".

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To compete successfully despite frequent and sudden change, firms have to foster the competencies that promote continuous innovation in both offerings and operations.

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The apparatus which recycles human waste and turns "yesterday's coffee into into tomorrow's coffee needs frequent maintenance and would likely not survive years of continuous duty on Mars", he says.

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At Harvest Prep the school year is continuous, with short and relatively frequent bursts of holiday, because that keeps learning on track and kids out of trouble.

ECONOMIST: Education

"Although China still has a long way to go before it has continuous real-time tactical coverage, even of a regional maritime environment, it now has frequent and dependable coverage of stationary targets and at least a basic ability to identify, track and target vessels at sea, " they wrote.

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