Why does gopnik argue that babies learn so much in such a short period of time?

Gopnik argues that babies learn so much in such a short period of time because they need to, to be able to survive in the world.

lifetime activities are certain actions that are either required throughout your life or you choose to do them. for example, eating is considered a lifetime activity, drinking water or other beverages, keeping your body clean, taking medicine. those types of actions are considered lifetime activities.