This comes after weeks of spotty polling, in which wide-scale power outages and destruction made it difficult to find a truly random opinion sample.

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Some customers would find that a random debit on their monthly bill had been circled and deleted - no need to repay that bit of the bill.

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But the authors did find one big advantage of a random strategy.

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Like other bacteria, S. aureus mutates at random, and through trial-and-error it will eventually find a way to outsmart any drug.

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To get Anderson localisation to operate in a random laser has not been easy, mainly because it is hard to find a substance that both acts as a high-gain medium and scatters light very strongly.

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