Grow Food on Every Inch of Your Property!

I mowed the lawn today and as I did a thousand questions, like incense, rose up from the sweet smell of grass and gasoline: "Why do I systematically cut blades of grass with a blade of steel? Why do I remove nutrients, pay for their disposal, and then purchase fertilizer to restore the nutritional deficit I've created? Why do I spend time, energy, and money to perform this seemingly meaningless task week-after-week, year-after-year? Why do I pollute to maintain such a strange version of perfection?" Thinking about these things I remembered a Youtube video I had come across. It was of this guy, John Kohler, who grew fruits and vegetables on every inch of his property. He apparently doesn't have any grass to cut:

As I thought about this man, my many questions were replaced with a new type of inquiry: "what would the world would look like if it were full of people like him?" I'd like to know what you think. Check out the Youtube video above and let me know: is this guy (John Kohler) "off his rocker" or is he practicing a profound degree of sanity?