why is shape of the skull so important to (((them)))?

does a larger rear protruding skull (aka a "cone head") provide additional growth room for the premotor cortex?

what does a larger surface area / volume of the premotor cortex provide?

better ability to synthesize the surrounding world and conduct simulations within the brain that more accurately reflect reality? Better ability to store multiple personalities as opposed to a single personality?

Is there not a trade off in doing this? OR, does the shape of the skull not influence the underlying structures?

Suppose the shape does influence, then by the logic above, would a person with larger protruding forward head (large forehead) rather than a larger rear protruding head (conehead) be less capable of performing in depth simulation / be less capable of managing multiple personalities, but rather have stronger capabilities with regards to actual consciousness & real time logic?

non-sense or something that is or should be actually studied?