Has something changed? I don't see the string "All the food you need" in the article (or anything like it... possibly I missed it). Anyway, in Japan the amoun

Has something changed? I don't see the string "All the food you need" in the article (or anything like it... possibly I missed it). Anyway, in Japan the amount of rice that one person historically has eaten for one year is 1 koku (which is about 150 kg). The yield for rice is about 0.41 kg per square meter. So you need well over 300 square meters to grow enough rice for one person for one year. That doesn't include other vegetables or fish (or whatever). In Walden, Thoreau describes self sustenance and living off the land. I believe he talked about farming a quarter of an acre, which is about 1000 square meters. Many people doubt he was able to rely completely on that quarter acre. You can get some extra efficiency if you build vertical grow systems, but even your 12 m^2 is a pipe dream. Their 3.5 m^2 system will provide snacks at best. So I think you are right to be skeptical.