When they excavated, Victorian explorers found objects that revealed the area’s ancient history from skulls of extinct rhinos and elephants to much more recent Romano-British artefacts.
It was a horrible wound. The cranium had been smashed open by some blunt instrument, leaving the naked brains exposed, and the cerebral matter had suffered deep abrasions.
You might notice that, up until the auditory nerve, the cranial nerves mostly control organs in the front of the cranium — mainly the eyes and facial muscles.
What this all means is that the structure of the stuff sitting up in your cranium isn't up to the task of preparing for a test – so you need to build external structures to help it out.