In a famous 1958 essay, I Pencil, Leonard Read showed that no man on earth knows how to make a pencil. No one man can accomplish all the things that need to be accomplished for this to happen, but pencils are manufactured anyway, and they are made because hundreds of men do the things, things near to them, that they can do. They all do things that are within their reach. But not one of them can make a pencil.
