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JohnEngelman · June 11th, 2015

The ability to walk long distances on two legs was the first specifically human characteristic. Since then the main factor in human evolution has been the development of higher intelligence.

June 11th, 2015	#20
JohnEngelman Junior Member Join Date: Jun 2015 Posts: 210	The ability to walk long distances on two legs was the first specifically human characteristic. Since then the main factor in human evolution has been the development of higher intelligence.