by Quan Wen, Dmitri B. Chklovskii "...what is the reason for such segregation? To answer this question, we posit that brain functionality requires high interconnectivity and short conduction delays."
Blind compliance to authority. This should be a case study for psychologists, a wake up call to the education system and force a reflection about society. This was put into a movie Compliance (2012) and is covered in Wikipedia's article (http://en.wikipedia.org/wiki/Strip_search_prank_call_scam).