"Before Kuhn, most scientists followed the place-a-stone-in-the-bright-temple-of-knowledge tradition, and would have told you that they hoped, above all, to lay many of the bricks, perhaps even set the keystone, of truth's temple—the additive or meliorist model of scientific progress. Now most scientists of vision hope to foment revolution. We are, therefore, awash in revolutions, most self-proclaimed."