"She found, however, that she could study them by following them around and observing their daily activities and interactions."
Are you f$%"£ kidding me? This sounds like such a revelation but is so bleeding obvious.
Of course you have to observe people in their natural habitat, WATCHING them, not just sending them a SurveyMonkey survey or asking a buncha questions. C'mon people. Get real!
The author was contrasting Fajans approach with that adopted by two previous anthropologists, who had abandoned the tribe as "boring" or "unstudiable".