"The workers activity, reduced to a mere abstraction of activity, is determined and regulated on all sides by the movement of the machinery, and not the opposite.” Grundrisse, 693.
 While Marx considered much, what was perhaps unforeseeable was a time when people were just never working, dictated either by choice, by force, or by the needs of capitalism. The crisis was to post-Fordist production and how to monetize information; the response was to make all activity productive. To make everyone work all the time, especially when you are not at work.
Hardt, Michael, and Antonio Negri. Empire. Cambridge, MA: Harvard UP, 2000. Print.
Marx, Karl. Grundrisse. Foundations of the Critique of Political Economy. New York: Vintage, 1973. Print.