mattzakgoldmanstacks sent a link to a reddit thread where they discussed this scene.
In S01E10 “Pier Pressure” Buster is pulling out his Medical Marijuana binder from what we can assume are binders related to other ‘Studies’ that Buster has taken part in, and what we observe is a binder labeled:
A hemispherectomy is a very rare surgical procedure where one cerebral hemisphere (half of the brain) is removed or disabled.
Might this explain a lot about why Buster as an adult is still needing constant supervision…. among other things…
All of the lessons taught in Arrested Development.