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Preview: Heisenberg’s general idea of uncertainty has become a trope of every science, social science, and casual knowledge claim. It seeped down from theoretical physics through the social sciences, as “the problem of the observer”, then to popular culture and finally into the daily vocabularies of the developed world. The effort simultaneously to know both the position and velocity of a sub-atomic particle became a symbol of the way that all of our efforts to know are disturbed by the very effort we exert in the task.