Wednesday, June 15, 2005
While this is certainly an interesting idea, I take serious issue with it for two main reasons. First, it's well established that bigger brains are not necessarily better, at least after a certain point. Second, and more important, is that this is not scientific logic. If a human who happened to have a bigger or more effective brain that allowed him to throw rocks or navigate his neighbors better, and that bestowed him a survival advantage, the 'big-brain' genes would thrive. Traits exist and are selected for or against by the environment, an organism's needs do not shape its evolution.