reducing the effects of constraints that limit production. In this way, unproductive lines of investigation can be discarded earlier. A rigorous review procedure can help guard against a tendency of many scientists to pursue familiar research projects with only minor changes, even if these may no longer be yielding significant new information of potential use by clients. An overall review will help identify where cooperative research or an exchange of information should take place. It will also identify duplication of effort or where resources could be better used on other priorities or in other regions. Another benefit of evaluation reviews is that participants in the process (at all levels, including support staff) develop a mission- oriented outlook and the overall program becomes more purposeful and rewarding. A further advantage of FSR/E is that it helps to make the process of research and development more understandable to public leaders, farm client groups, and service organizations. It provides a visible example of public and institutional commitment to finding solutions for real problems and to improving rural life. These in turn can lead directly to public support for research and development, which may previously have been lacking, and indirectly to changes (where desirable) in public policies toward agriculture. While it is rarely possible to measure the cost and benefit ratio of an FSR/E research program directly, it is possible to evaluate progress against goals and objectives, if these have been clearly stated. It may also be necessary to include measures or indicators of progress in data gathering and analysis activities. For example, the rate of adoption of technology introduced under the program is one indicator of progress, as are the net farm incomes, levels of production per unit area, or total production from an area measured over time. Readers familiar with the complexity of measuring such indicators, particularly under multiple cropping systems, will recognize the problem of objectively measuring program success. Adding to the complexity, both research and farm managers must take into consideration the consequences of recommendations and decisions, not only for the current cropping season but also for future seasons. For example,