This article have a strange math... Except, perhaps, some tropical areas, we need to eat the entire year, while the garden produce just few months. As a result

This article have a strange math... Except, perhaps, some tropical areas, we need to eat the entire year, while the garden produce just few months. As a result we need MUCH MORE surface to harvest enough for the rest of the year, nourish animals and so on. There is no fixed dimension since it vary from local climate to local climate + margins due to weather variations year per year but just to get enough grains, nourish enough poultry and so on in temperate climate we need MUCH, MUCH more.