Our food source

We were reading a library book the other day called Farms Feed the World. It talked about where our food comes from and that we also get our clothing from cotton that grows on farms. The final page had some lines about our need to respect and support farms. We close the book and Amelie says, "Well, everyone else needs farms. We don't." To which I say, "We don't? Where do you think we get all of our food and clothing?" "Our backyard", she says. Huh. If we actually tried to feed ourselves from our backyard year round, I think she'd feel a little less smug about the situation.
I feel an "Animal, Vegetable, Miracle" experiment is in order in a few years.