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Cartoon by James Gillray satirizing Sir Francis Buller, 1782: "Judge Thumb; or, Patent Sticks for Family Correction: Warranted Lawful!". A modern folk etymology [14] relates the phrase to domestic violence via an alleged rule under English common law which permitted wife-beating provided that the implement used was a rod or stick no thicker than a man's thumb. [6]
Rule of thumb is not derived from a medieval constraint on the thickness of an object with which one might beat one's wife. [43] [44] More likely it means that the thumb can be used to measure an approximate inch. [45]
Either way, these variations would have been derived from the Indo-European root word -peuk, meaning "to prick". [122] The expression "rule of thumb" did not originate from an English law allowing a man to beat his wife with a stick no thicker than his thumb, and there is no evidence that such a law ever existed. [124]
In fact, though this rule of thumb has been around since the 1960s, there’s little *scientific* evidence that walking 10,000 steps should be your target, according to a 2022 review in The Lancet.
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In statistics, the 68–95–99.7 rule, also known as the empirical rule, and sometimes abbreviated 3sr, is a shorthand used to remember the percentage of values that lie within an interval estimate in a normal distribution: approximately 68%, 95%, and 99.7% of the values lie within one, two, and three standard deviations of the mean, respectively.
Image source: Getty Images. It's all about striking the right balance. For many years, financial experts swore by the 4% rule in the context of managing a nest egg. The rule has you withdrawing 4% ...
The pygmy mammoth is an example of insular dwarfism, a case of Foster's rule, its unusually small body size an adaptation to the limited resources of its island home.. A biological rule or biological law is a generalized law, principle, or rule of thumb formulated to describe patterns observed in living organisms.