I was watching the Amazing Race last night, on CBS, and I watched this girl freak out, after so much stress (the Amazing Race is a show where a team goes around the world and has to get back to America before anyone else to get $1 million). And I was thinking... Stress is such a terrible thing, mental stress. Its all in your head right? What is going on in there? It can be triggered by physical stresses, but its all psychological or not? Fatigue is one of the reasons why IBM supercomputers can beat world champions, because of fatigue. It seems like the ability to have have these two things, would have evolved out!