It is tacit. So the PC can teach you some things, and it clearly has a future. But, a Stradivarius is a Stradivarius, because we can't figure out what Stradivarius knew. Well, once everyone knew how to guide it through currents and rapids, at least everyone in the tribes for whom they were the common mode of transportation. As for the rest of us, we can learn, but it would be a good idea to learn it from someone who knows how and is there to show you.
Teachers have a future, too.