Read this: Some of the theorists who advocate this "revisionist" critique imply that, because the "pure hunter-gatherer" disappeared not long after colonial (or even agricultural) contact began, nothing meaningful can be learned about prehistoric hunter-gatherers from studies of modern ones (Kelly, 24-29; see Wilmsen)
Now answer this question, if there is an answer (If it cannot be answered, return "unanswerable"): Who thinks that it is useless to study modern foragers since the real ones are gone?
theorists