I mean, humans are a social species, and tribal societies that live off the land have a chain of countless generations passing down wisdom and customs to train

I mean, humans are a social species, and tribal societies that live off the land have a chain of countless generations passing down wisdom and customs to train their people on how to effectively survive in their respective environments, and still they rely on their community to effectively do so. To take a single (or even a couple) of fully formed adults without any of that lifelong education and training, who are accustomed to a wholly different environment and way of life, and to drop them into a survival situation without that surrounding community to rely on, seems like an obvious recipe for failure. Not that I’m arguing that tribal life is actually desirable over a modern western lifestyle.