Have just read a hillarious blog post by Eldar Musayev. If you can Russian, go read it.
Here’s a short version, the way I’ve understood it:
Old-skool Capitalism: the manager kicks asses of his workers and tells them what to do.
Economy of Knowledge: the manager is still kicking the asses, but only his workers know what to do.
Now we’re experiencing shift to Economy of Invention: even the workers don’t know what to do. The economy is making money by starting a project and inventing a solution at it goes.
Managers are still kicking asses (what else can they do?)