posted on Jan, 12 2011 @ 11:24 PM
As a few have sort of hit on a tangent - it's brain density that matters over brain size, as well as composition. Currently, our brains are about as
dense as they can bet without our neurons undergoing some serious revisions (at present, if they get any smaller, their 'gates' will be flooded with
noise and be unable to function). Having smaller neurons is a good thing, generally - it allows each neuron to be in contact with more neurons than
if it were larger. This allows for more neural connections to be made - a far more significant factor in intelligence.
Another considerable factor is what the brain is actually made of. "white" matter can be thought of as bus-wires (it's not quite so simple, as
"white" matter can perform processing of information) - it's mostly to transfer information. "gray" matter is what actually does most of the
thinking. A skull full of "white" matter will be substantially less 'intelligent' than one full of "gray" matter. Of course - organization is
everything, a functional mix of the two will be necessary to get much of anything done.