I had and interesting though the other night. I had just watched a documentary about Stephen Hawking, where he re-evaluated his theory on black holes. Then I watched I, Predator about the
biomechanics of a cheetah on the hunt. I, Predator explained how the cheetah uses its long tail as a rudder to help it make high speed turns while chasing an antelope. I briefly though about how much brain power must be devoted to controlling its long tail. This reminded me of a diagram I saw in a science book once. The diagram showed the human brain and sectioned off each part that was devoted to different parts of the body. The section for arms and legs was tiny. Feet, a little bigger. The hands were very big. And the eyes were huge. I thought of other mammals and how they use there tails. Kangaroos use them for balance while hopping, and as a tripod when sitting. They even stand on them when they use their legs to kick with. Squirrels use them to balance when they are climbing a tree. And monkeys use them for balance when climbing out onto a tree branch. They can even use them as an extra appendage to grasp with. So monkeys must be using a huge part of their brains, just for their tails. Great apes don’t have external tails, so all that brain space that their primate cousins the monkeys need is left free for other things. Later that night I was lifting weights and as I worked though each repetition I reminded myself to focus on the muscle group. This got me thinking of the brain diagram again, and how by focusing on the muscle group I was focusing on a specific portion of my brain. For a brief second I though, “if I
didn’t have to devote so much of my brain to my body, I would have a lot more brain left free for other things.” And this brought me back to Stephen Hawking and eureka! That’s when I though, “no wonder Stephen Hawking has such a remarkable brain. He
doesn’t devote any of his brain to controlling his body and the trade off in mobility has paid off in cognitive power.”
Labels: apes, black holes, brain power, cheetah, I, Predator, random thought, Stephen Hawking, tails