Is the human skull expanding?

And man is surpassed even more in these proportions by the capuchin monkey with one gram of brain substance for 17.5 gm. of body substance

yeah they have brains in comparison as big as man, but that does not mean they are made up of the same brain chemastry. i think it is safe to assume that a mans brain is not the same as a monkey, therefore size really does not matter when comparing. since our brains are far more complex in desinge (again im no brain scientist just my logical conclusion) its complexity will always remain the same, givin it has the ability to grow its procesing power will improve!