Combining Calvin and Brace, your have the following theory: Developing skills to: * throw * cook and the resulting structural changes were critical in our ultimate ability to speak. http://www.med.jhu.edu/FAE/aapa/Paleoanthro.htm Locale and antiquity of cooking technology can account for the observed differences in tooth size, and the locale and antiquity of projectile usage can be used to treat the appearance of post-cranial gracilization. http://williamcalvin.com/bk2/bk2ch4.htm http://www.beyondveg.com/billings-t/comp-anat/comp-anat-6b.shtml Philip Thrift http://www.paleofitness.com