If adaptability (without simplicity) is the key component, that sounds like somewhat good news for humanity, us being a versatile type, and we can eat a lot of

If adaptability (without simplicity) is the key component, that sounds like somewhat good news for humanity, us being a versatile type, and we can eat a lot of things for food. It's not quite clear to me that survival necessarily implies smallness. Though I would imagine that a lot of humans would die in the process. It would make the black plague look like child's play.