Under the circumstances where you wouldn't have any family or friends with you, and were stranded in the wilderness without any food or water on hand until you find some, do you think you would you think you could survive? You would be stranded in the wilderness for one week.
Myself, I'm not sure. If I already had food and water on hand, probably. But not having any on hand and having to try to find some to start out with, probably not.
The answer is yes. Without the mythos (set of beliefs or assumptions), stigmas, and often complete hogwash which surrounds wilderness survival, it is not rocket science.
There is a ton of information a person has to learn by heart, and numerous skills that they have to acquire and practice until they are proficient, but survival is eminently doable.
Mankind as a species survived from caves to houses, which states a lot. The "impossible" stigma is pure hogwash, and it has always been.
However, for most people in modern society wilderness survival is indeed an impossible task concerning long term survival (a month or more).
Most anyone could survive a week, unless they did something truly and monumentally stupid.
The cause of death for anyone is because of a lack of information and/or common sense, not the lack of a supporting civilization.