But they will be disappointed if they seek to understand how governments can deal with the justifiable frustration that people feel, and seek to express, during times of economic turmoil.

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It's a bit speculative, but once scientists understand how receptors work, they can in theory use chemical agents to switch them on or off.

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Sure, people can buy the shoes, but do they really understand how they work and how to get the best out of them?

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But how can children develop moral character or even improve their powers of concentration if they don't understand a word they are reading?

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