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The general problem of time & optimal decision making is considered as it presents itself in large-scale, environmentally sensitive development projects -- eg, power plants, strip mines, & oil platform construction sites. It is shown that the chances of achieving an optimum can be improved by building in an opportunity to reconsider risky development decisions. Within this framework, certain procedural steps can also lessen the effects of intertemporal uncertainty, but cannot eliminate them entirely. 1 Figure. HA.

The apparent fact that interactive effects are more common in policy innovations taking a long time to diffuse among the states, contrary to the presumed effects of interaction, suggests the existence of alternate diffusion mechanisms. Some policies diffuse directly from a federal model, while others diffuse among states via a segmented pattern of emulations. The order of state adoption of fair employment practices legislation is compared with the adoption order for three labor policies and two civil rights policies. Fair employment practice, by this test, is identified as a civil rights policy and not as a labor policy. State minimum wage legislation is discussed as a case of federal influence in the diffusion process. A first wave of diffusion was followed by a period of federally inspired court rescission. Federal legislation in 1938 began another wave of diffusion. In a third wave of innovations, states with existing laws amended those laws by emulating the new federal legislation.

In spite of common challenges stemming from the common environment shared by all cities in a metropolitan region, continued and even increasing social and economic differentiation among and within cities rather than ho-mogenization and integration are the most significant features of the contemporary metropolitan scene.1 Cities within the same metropolitan region are not only maintaining but also developing distinct and unique "public life styles." Urban sociology and urban geography have raised a multitude of questions and given a multitude of answers in seeking to account for the fact that cities facing basically similar challenges from the environment react so differently to these challenges. Most relevant research deals with the problem of differentiation and its effects on the development of cities in terms of historical settlement patterns, economic location and growth, or geographical space distribution.3But differences in municipal life styles may also be the result of differences in public policies deliberately pursued by local governments in the metropolitan area. If this is so, the common pressures from the environment are evidently interpreted differently in the process of public decision-making that seeks to cope with them. It would seem, then, that metropolitan cities are in different stages of policy development. Leaving aside momentarily the meaning of "stages of policy development," we can ask a number of questions that may shed light on the relationship between environmental pressures and public policies designed to meet these pressures.