This could actually apply to the hunter&gatherer because those didn't care much about sustainability. When a region was picked/hunted empty they simply moved to a new region, few enough of us around back then so this actually worked and regions had time to recover.
Now imagine nearly 7 billion humans living the same way: Gathering/hunting everything in their closest region until most of it is gone just to move on to a new region, no permaculture at all. It wouldn't take long before there wouldn't be anything left to hunt or gather.
>A one acre garden is not a "hobby" in my opinion. The amount of work involved in cultivating an entire acre is immense.
Not every one-acre garden is actually cultivated, that's how some people are able to have them as a hobby ;)
I'm not sure how this is true. Perhaps you can persuade me?
A one acre garden is not a "hobby" in my opinion. The amount of work involved in cultivating an entire acre is immense. As well, a personal garden is unlikely to be a monoculture which is even worse ecologically in my opinion than a loss of efficiency. Plus there's all that Round-up...