Growing corn or wheat is indeed super-efficient in its use of human labor. But pretty wasteful in topsoil, chemicals, energy. And other crops (like fruit, or he

Growing corn or wheat is indeed super-efficient in its use of human labor. But pretty wasteful in topsoil, chemicals, energy. And other crops (like fruit, or herbs) are much more labor-intensive. So that's two directions where it would be great to get more efficient.