If you think it through, actually, when a zebra is being eaten alive by a lion, that’s one of the worst experiences that you could possibly have. And if we are compassionate toward our pets and our kids, and we see a squirrel suffering in our backyard and we try to help it, why wouldn’t we actually want to help the zebra?” We could genetically engineer lions into herbivores, he suggested, or drone-drop in-vitro meat whenever arificial intelligence detects a carnivore’s hunger, or reengineer “ecosystems from the ground up, so that all the evolutionarily stable equilibriums that happen within an ecosystem are actually things that we consider ethical.