I Personally Am Not Conscious Of My

With The Rise Of Chiefdoms Around 7,500 Years Ago, People Had To Learn, For The First Time In History, How To Encounter Strangers Regularly Without Attempting To Kill Them.

Thousands Of Years Ago, Humans Domesticated Every Possible Large Wild Mammal Species Fulfilling All Those Criteria And Worth Domesticating, With The Result That There Have Been No Valuable Additions Of Domestic Animals In Recent Times, Despite The Efforts Of Modern Science.

Human Societies Vary In Lots Of Independent Factors Affecting Their Openness To Innovation.

All Human Societies Go Through Fads In Which They Temporarily Either Adopt Practices Of Little Use Or Else Abandon Practices Of Considerable Use.

We Can't Manipulate Some Stars While Maintaining Other Stars As Controls; We Can't Start And Stop Ice Ages, And We Can't Experiment With Designing And Evolving Dinosaurs.