ABSTRACT
Planning inherently involves the future. Yet in truth, no one can be certain about what will happen in the future. This means that as planners we are constantly dealing with uncertainty. We offer thoroughly reasoned opinions and carefully calculated projections, but we know there is a chance that things will not happen the way we say they will. We may even be more aware of uncertainty than most other people are because we know how tenuous the assumptions behind opinions and projections can be.
