As the stress level is gradually reduced, there comes a point where a structure can survive enough stress reversals to exceed the component's expected life.

ECONOMIST: Aircraft fatigue

But there's rarely a component of financial health and stress.

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Worse still is the structural component's shape: notches and sharp corners create concentrations of stress that can initiate cracks.

ECONOMIST: Aircraft fatigue

"Simulations are seen as an important component of management development because they put people directly into a scenario, and that means there is stress and emotion, " he says.

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