Earlier quoted context omitted.
I don't think anybody is proposing to replace the entire existing food supply chain with nothing but hunted deer. There is no reason however, to think that hunting can't supplement a family's food stocks if other sources start to become thin. And there's a lot more to hunt than deer. There's also more in play than hunting. A family might feed themselves through a combination of any or all of: hunting, trapping, fishi…
Again, there is every reason to believe (know) hinting/foraging is woefully inadequate. Simple numbers. Natural 'foods' are pitiful fractions of modern cultivars. It takes a quarter acre(?) of Jerusalem Artichoke to gather a few baskets of roots, which must be boiled and peeled down to a few score pounds of edible material. Even a bonanza 10-acre plot in a meadow would feed 40 people for a few days. Early Americans s…
I highly recommend "How to Grow More Vegetables: Than You Ever Thought Possible on Less Land Than You Can Imagine" by John Jeavons.
Every year, my garden produces an ever increasing portion of the food for my household and this year it has expanded to provide a significant amount of food for a small flock of chickens. Important things that aid my productivity and reduce the time it takes are a heavy mulch to minimize weeds, improve soil fertility and reduce water consumption as wel as drip irrigation on timers.
There are plenty of people using sustainable techniques to produce more food than they can eat if you look around on the internet.