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Speculative Fact #148: Hands for Weapons

12/20/2013

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    David Carrier, an evolutionary biologist at the University of Utah, has been making controversies with his theory that human hands might have evolved to be used as
clubs.              
     In a study published in the Journal of Experimental Biology it was found that while an open palm strike can achieve as much force as a punch, a clenched fist can focus the force into a smaller area. Additionally, a clenched fist reduces the risk of injury to the delicate fingers. The shape of the human hand, in contrast to the hands of other apes, allows for such a unique configuration.
    The study has been challenged and raises questions about form versus function (did the hands evolve to be used as a club or was that just a secondary result?).             
     Are human beings natural born killers? Are we killer
apes?


http://www.scientificamerican.com/article.cfm?id=human-hands-evolved-for-fighting

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