For this study, I studied and anylized the skull of user "Joe Mama."

He had a very pronounced ridge and dent on the back of his head under the ridge.
This indicated a lack of brain mass in brain organ section #34 (controls comparitive brain analysis).
And minor lack of mass in sections #33 and #35 (controls language and causality).

This clearly explains Joe Mama's inability to grasp and understand the environment around him. And his inability to communicate with others in a civilized manner.