The Economist:

The second argument had to do with the rise of knowledge workers. Mr Drucker argued that the world is moving from an “economy of goods” to an economy of “knowledge”—and from a society dominated by an industrial proletariat to one dominated by brain workers. He insisted that this had profound implications for both managers and politicians. Managers had to stop treating workers like cogs in a huge inhuman machine—the idea at the heart of Frederick Taylor’s stopwatch management—and start treating them as brain workers. In turn, politicians had to realise that knowledge, and hence education, was the single most important resource for any advanced society.
Yet Mr Drucker also thought that this economy had implications for knowledge workers themselves. They had to come to terms with the fact that they were neither “bosses” nor “workers”, but something in between: entrepreneurs who had responsibility for developing their most important resource, brainpower, and who also needed to take more control of their own careers, including their pension plans.