I'm wondering if the xenology skill should also include obscure human cultures. Human's are aliens too right?
Example: Players meet one of five desert tribes (human) on an outer rim world. The droid of the party (with lots of knowledge skills) wants tocheck if he knows anything about them from their appearance (dark skinned, warpaint, predilection for orange loose flowing garments), architecture, planet, and dialect.
Should he roll his Outer Rim or Xenology check? Or something else?
It kind of strikes me as weird, that if the tribe were any other species, there wouldn't be a discussion... it's obviously xenology, no matter how obscure this tribe is in relation to the whole species, but if it's an obscure isolated group of humans... it's not so clear cut.
On the other hand, the distinction between a species and a culture is important, and perhaps culture is covered more by geographical knowledge checks than ones that relate to species .