I enjoyed the fish video but did you notice he never addressed the question of how do we feed the world? He said that we are CURRENTLY making more food than gets distributed (Great point) but he never answers if we would have that surplus if everything was raised in an ecologically friendly way. Im not hating on the idea but he dodged the question which makes me wonder if he knows the answer is no.
Also its hard to grow food locally in say arizona in an ecologically friendly way. Maybe thats a good thing? Maybe people wouldnt move to deserts if that was our method. Maybe a decrease in the amount of food produced would curb the population expansion?