On Mar 30, 2010, at 4:19 AM, Alberto G. Corona wrote:
Taming a horse is good for survival, but we do not evolved for taming horses (this is only done a few milennia ago). Learning to driving a car is now good for survival, but we don´t evolved for that. even the invention of the arrow and the spear is relatively recent.
The spear goes back nearly half a million years. For the Schöningen spears, http://www.sciencenews.org/sn_arc97/3_1_97/fob2.htm For the Clacton spear: http://piclib.nhm.ac.uk/piclib/www/image.php?img=46773&search=spear The spear is old than modern Homo sapiens and may be older than archaic Homo sapiens. To some degree, therefore, we _did_ evolve to work with spears (and a lot of other tools too; the bag may well have been far more important). There is some evidence that arrows may go back 60,000 years, which is time enough for some evolutionary effect. I grant you that driving cars is recent (:-) (:-)!