The professionalized cognitive and occupational styles that were refined in the first half of this century, based in Newtonian mechanistic physics, are not readily adapted to contemporary conceptions of interacting open systems and to contemporary concerns with equity. A growing sensitivity to the waves of repercussions that ripple through such systemic networks and to the value consequences of those repercussions has generated the recent reexamination of received values and the recent search for national goals. There seems to be a growing realization that a weak strut in the professional’s support system lies at the juncture where goal-formulation, problem-definition and equity issues meet. We should like to address these matters in turn.
Dilemmas in a General Theory of Planning, Horst Rittel / Melvin Webber, 1973