Sometimes emotions move us to act before we even have a chance to think rationally about them.

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Decision fatigue is a biological process that affects our ability to think rationally and make good decisions.

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You lose all balance and ability to think rationally.

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Similarly, I think most Americans understand rationally that too many adults and children are overweight.

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On the other hand, the test of a policy based on realism is whether it delivers results, and engagement on its own, as Mr Bush discovered in his chastened second term, seldom alters the behaviour of regimes that think they are acting rationally in their own vital interests.

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Making sustainability the default: Behavioral economics convincingly demonstrates that we act much less rationally than we think we do.

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Insofar as science does a far better job of rationally explaining how the world works, I think scientific prudence deserves more of a chance.

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