All questions, apart from those about frequency of sex, were answered on a five-point scale, with one indicating strong disagreement and five indicating strong agreement.

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Or a wireless scale can notify a nurse when a congestive heart failure patient gains weight indicating dangerous fluid retention.

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Binzel recently created a 10-point scale for estimating the threat of a near-Earth asteroid, with zero indicating no chance of an Earth impact and 10 indicating a certain Earth impact with severe, global damage.

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