I suspect that one difference between the classic treatments (like the Sector General books or "Expedition to Zhodane") and the more recent nightmare scenarios is that the technology used was bulky, finicky, and really only worked on one (presumed willing) subject at a time (and took some time to do so). At worst it's a psychological thriller and/or "Manchurian Candidate" scenario, not the sort of mass mind-control where you rapidly assimilate, er, re-write an entire country or world, then use them to take over the next, then the next, and so on.
And with specific regard to the SG books, per the OP's question, that's a setting where sentient life is so ubiquitous and varied that they need an equally complex classification system, and no doctor can possibly know them all. In Traveller, a doctor has to know how to treat a dozen species, *tops* - more commonly, only two or three. That's well within the bounds of personal knowledge and reference materials.
--
---------------
Kelly St. Clair
kellys@efn.org
-----
The Traveller Mailing List
Archives at http://archives.simplelists.com/tml
Report problems to listmom@travellercentral.com
To unsubscribe from this list please goto http://www.simplelists.com/confirm.php?u=JydxSB9tZc6TS63HiAHJcg6SAwighNGJ