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Monday, March 21, 2005

Left-Handers: Natural Born Killers

Collision Detection said:

Evolutionary theory has long been puzzled by left-handedness. Southpaws are in the minority, and they get into many more accidents than do the right-handed; in the modern context, this is partly because so many quasi-lethal tools are engineered primarily for right-handed use. So the question is, given that left-handedness is so dangerous to one's health, why haven't southpaws evolutionarily vanished?

Possibly because southpaws are extremely good at one thing: Killin' people.

The Economist adds:
While there is no suggestion that left-handed people are more violent than the right-handed, it looks as though they are more successfully violent.

links:
Natural born killers [Collision Detection, Dec. 26, 2004]
Handedness, homicide and negative frequency-dependent selection [Charlotte Faurie and Michel Raymond, Proceedings of the Royal Society]
A sinister advantage [The Economist, Dec. 9, 2005]

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