Galton's estimate relied on using every available point (there are generally between 35 and 50).

ECONOMIST: Fingering fingerprints | The

Modern fingerprinting goes back to Francis Galton, a 19th-century British scientist who, ironically, helped to pioneer the use of statistics.

ECONOMIST: Fingering fingerprints

Nothing, not even Galton's original analysis, has anything to say about the likelihood of fragments of prints coinciding in different individuals.

ECONOMIST: Fingering fingerprints | The

Mr Galton reckons that 35% of the primary-school day is now spent on whole-class teaching, up from 15% a few years ago.

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Steven Galton, of the No Southampton Biomass campaign, said the new deadline left local people "in limbo" because it gave no specific date.

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In 1892 Galton looked at the pattern of whorls, arches and loops that make up fingerprints, and estimated that the chance of two prints matching at random was about one in 64 billion.

ECONOMIST: Fingering fingerprints

Maybe Galton's classic twins study was invalid: perhaps you cannot look at the similarities between identical twins, and those between non-identical ones, and conclude that the difference must necessarily be due to genes.

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Others point to the writings on heredity of Francis Galton, a Victorian, but these days they seem tinged with racism, and no one in Mensa would want to have anything to do with that.

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Besides, Galton was not really comparing whole prints.

ECONOMIST: Fingering fingerprints