Comment by Maruli Marulaki on January 2, 2012 at 10:26am when you google the 'savannah hypothesis', there is much more interesting research by kanazawa Comment by matthew greenberg on January 2, 2012 at 10:11am In the current study, Kanazawa argues that humans are evolutionarily designed to be conservative, caring mostly about their family and friends, and being liberal, caring about an indefinit