I Personally Am Not Conscious Of My

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

It's Striking That Native Americans Evolved No Devastating Epidemic Diseases To Give To Europeans, In Return For The Many Devastating Epidemic Diseases That Indians Received From The Old World.

We Scientists Have Fantasies Of Being Uniquely Qualified To Make Great Discoveries. Alas, Reality Is Cruel: Most Of Us Are Replaceable. For The Vast Majority Of Scientific Contributions, If Scientist X Hadn't Achieved It That Year, Scientist Y Would Have Achieved The Same Result Or Something Very Similar Soon Thereafter.

In Parts Of Montana, Salt Concentrations In Soil Water, Have Reached Those Double Those Of Seawater.

Not Until The Beginning Of The 20th Century Did Europe's Urban Populations Finally Become Self-sustaining: Before Then, Constant Immigration Of Healthy Peasants From The Countryside Was Necessary To Make Up For The Constant Deaths Of City Dwellers From Crowd Diseases.