Maintain flexibility of the system as work on predictions proceeds. Recognize that the prediction itself can be a significant event. Recognize that different approaches can yield equally valid predictions. Recognize that prediction is not a substitute for data collection, analysis, experience, or reality. Beware of precision without accuracy.
Computers hide assumptions.
Computers don't kill predictions, assumptions do. Recognize that the science base may be inadequate for a given type of prediction. Recognize that prediction may be more effective at bringing problems to attention than forcing them to effective solution. Recognize that perceptions of predictions may differ from what predictors intend and may lead to unexpected responses. Recognize that the societal benefits of a prediction are not necessarily a function of its accuracy.