Fact. On the other hand most "royal advisers," strategists and key people who made sure the king didn't just charge into battle to get chopped to bits were typically introverts.

Point being, both approaches are interwoven as part of the greater picture of survival of the species. "Doers" without "thinkers" often ends up being a huge clusterfuck; "thinkers" without "doers" easily becomes endless mental masturbation without tangible progress.