If the yield of food per labor unit goes down, and we want to feed the worlds poor (aka keep food prices at least flat), that necessitates a substantial drop in

If the yield of food per labor unit goes down, and we want to feed the worlds poor (aka keep food prices at least flat), that necessitates a substantial drop in farm labor wages. Seeing as migrant laborers are already pretty close to being slaves, reducing their wages is not going to result in a conscionable working situation. I'd take environmental degradation over slavery, to be honest.