Hmm. Interesting.

"There is insufficient cranial capacity to accommodate the volume of neurological matter required for the degree of sentience we desire. Do we:
1) Expand the cranium, thus making the individual look more human-like and less animalistic.
2) Make the skull thinner
3) Increase the efficiency of neuronal connections and myelin, particularly in the parietal lobe
4) Reduce spine flexibility to use it as an 'extension' of cranial space."