this phrase have caught me in Dion Moult's blogpost "The kde-www war: part 4"
this is actually the main idea behind some scientific theory of society. 'economics should be transformed into pedagogics': people should learn how to make products like food, clothes, buildings, railways, electronic equipment, and the side effect of their learning would be real products.
but nowadays most of the people take part in activities focused on creating consumer products, and get [minimal needed] knowledge only as a side-effect.
the point in the pedagogics society is that when you have learned smth, and also tought it to others, you move on to another industry field. this way you never get bored, and you feel yourself a human, not a non-conscious machine that does same thing all the time.