Gun sales reached at least a 14-year high last month, according to a widely used, if imperfect, measure.

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BMI, the ratio of weight in kilograms to the square of height in metres, is a common, if imperfect, gauge of whether someone is over- or underweight.

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John Mueller, of America's University of Rochester, argues that democracy has had a good, if imperfect, record of dealing with minority issues, particularly when compared with other forms of government.

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By contrast, Goldman's value-at-risk the amount it could lose on a bad day and thus a widely used (if imperfect) measure of risk appetite hit a new high last quarter, jumping most in equities, even as stockmarket volatility fell.

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The best way to influence that change is to remain true to one's friends, even if those friends are imperfect.

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But rebuilding an entire plant takes a lot of effort and tech transfer can be an imperfect science if the underlying processes were problematic in the first place.

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This imperfect, if not inverse, relationship between density and wealth is widely ignored by most urban core boosters, many of whom argue that packing people together is the true key to economic growth.

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Those time constraints mean medics have to make quick judgments about the suitability of donated organs, even if it that means using imperfect organs.

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If there is one thing my three children have taught me, it is that parenting is an imperfect science.

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