Earlier quoted context omitted.
Without economics we'd all starve to death. Edit: I submit "Alone", the TV show where survival experts are dumped out in the wilderness one by one, where they all starve and eventually get pulled out for losing dangerous amounts of weight. And this is despite bringing along survival gear made by an advanced economy.
Not sure why the down-votes, but I will point out they start in late fall, in areas uncolonised by people in 2000 years- which might infer some hint as to the desirability of said location.
Only one was able to make fire without a fire starter. After watching Alone, I bought myself a fire starter, to carry when hiking.
I remember one father/son team. The son had some sort of fisheries degree, and considered himself a fishing expert. Father and son would fish, the father caught fish regularly, the son couldn't catch one. A lot of the fishing experts turned out to be not so good at fishing, the same for the hunting experts.
What's kinda sad is how bad most were at building shelters. They'd spend all their calories building a magnificent log cabin, and then were too weak to continue. Season after season they'd do this. Or they'd spend time carving toys. Or they'd burn down their shelter with a bad fireplace or poison themselves with the smoke.
The point is, humans have evolved to need an economy for mutual survival. Can't realistically do it alone, from scratch.