Abstract
Mandelbaum argued against the possibility of a complete general theory of planning set out along the lines of a generalist, a priori, covering-law model. In this article we draw on Miller and Hurley to elaborate a coherentist approach to planning theories that achieves some of the aspirations Mandelbaum sought for a general theory. We argue that this perspective is more inclusive, vis-à-vis what can count as theory for planning, and widens the circle of intellectual conversations in which productive disagreements on points of theory can be sustained. We show how the coherentist approach is useful in focusing the attention of planning theorists on productive inquiry. Finally, by analogy, we argue that a coherentist attitude toward how plans can and should be made and used in particular situations is more useful than the traditional approach of comprehensive plans.
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