The Twelve Cortex Functional Areas of the brain add repetitious physiology to Twelve Cranial Nerve inputs and the constraints
of the Five Sensory Systems that feed data to the anatomy of the Five Cerebral Vesicles of the brain.
We can now see a basic foundation for the "software" assumption of a rigid, fixed pattern to the organization
There are sets of physiological constraints. Consider that the input comes from five (5) senses, feeding information, by means of twelve (12) pairs of cranial nerves, into the "hardware" of the brain, itself, composed of twelve (12) operational centers, the twelve (12) Cortex Functional Areas.