The Cognitive Trade - Off Hypothesis

Did you know that years ago All we had was sticks and stones To make our food and build our homes? We collected birds and we lived in holes And most of us lived in the trees We counted things at incredible speeds We lived a life of simplicity And eating on bugs and little berries We climbed down from the trees and we learned to speak We lost all of the hair from our bodies Our ancestors were very weak The other chimps kicked 'em out of the trees And they were forced to learn how to speak In exchange for other important things But once on the ground, we were exposed To lions and tigers and predators So we learned to speak to share our strategies On how to survive as naked monkeys We climbed down from the trees and we learned to speak We lost our detailed short-term memories But what's all of this got to do with me? Is there some sort of connection to my ADD? Climbed down from the trees and we learned to speak We lost our detailed short-term memories But what's all of this got to do with me? Is there some sort of connection to my ADD? We climbed down from the trees and learned to speak We lost all of our cognitive abilities We climbed down from the trees and learned to speak We lost all of the hair from our bodies