Before people worked in offices in the city, all of humanity was tied to the land. Once the beasts of burden were harnessed, humanity started to escape the limits of their own frailty. Across four millennia; the horse pulled the cart, the ox ploughed the field, and the donkey carried a messiah or two. The cereal crops harvested by these agricultural humans could both sustain the farmers and their animals. The humans ate the grain and the animals (both the working ones, and the unemployed ones bred for meat) ate the stalk.
