> we're basically born at a stage of development that'd be considered a fetus for other animals in a lot of ways, and rely a lot more heavily on our parents as

> we're basically born at a stage of development that'd be considered a fetus for other animals in a lot of ways, and rely a lot more heavily on our parents as we continue our development. And since parenting such an undeveloped creature requires high intelligence, we get more and more intelligent in a feedback loop [1]. [1] http://www.pnas.org/content/113/25/6874.abstract http://www.pnas.org/content/113/25/6874.abstract