Policy analysis consists of evaluating policy options in terms of their effects. The analysis is not complete, however, until the reasoning has been reversed, starting at the outcome end and reasoning back to the first choice (backward mapping). Reversing the logic has two effects on analysis; it provides insurance against unanticipated effects, and it changes the content of the policy options recommended. Using reversible logic also means deliberately building into one's parochial (narrow) solution an anticipation of others' parochial solutions. An energy consumption example can be used to demonstrate how reversible logic works. The forward leg starts with a standard set of implements, the backward leg with a set of decisions that policy would have to affect in order to influence energy consumption. The forward and backward legs produce almost opposite results. Youth employment is a complex example of a multiple-jurisdiction, multiple-outcome policy. Employment policy may have several purposes. Successful implementation consists of trading multiple objectives against one another to achieve desired outcomes. Other sources of complexity are multiple political jurisdictions and variations in the parameters that influence policy. (YLB)