That would be "Xenology" discussed on the previous page.
Personally, I gotta say I actually prefer FFG's version here. It's like a sort of grimdark humour when you have a bunch of Imperials wondering just
how
a society like the Tau Empire can work without people getting told what to do at gunpoint - meaning, like the Imperium of Man. I mean, what else other than mind control could it
possibly
be! "Idealism"? Phhht, please! Totally unrealistic!