I hope perspectives like this are one of the main outcomes of the And model of the post -- that people don't see the skills associated with introversion as "versus" those of extroversion.

So that just like you point out with fitness and intelligence, so with introversion and extroversion, so people can find solitude, focus, and meditation help them develop skills of being outgoing and gregarious.

And that people can find talking, socializing, networking, and partying help them develop skills of spending time alone or with a small group of close friends.