Why CBA? o Typical of the questions on which cost-benefits analysis has something to say: project policy selection. o if we have to decide whether to do A or not the rule is Do A if the benefits exceed those of the next best alternative course of action, and not otherwiseWhy CBA? l Typical of the questions on which cost-benefits analysis has something to say: project /policy selection. l If we have to decide whether to do A or not, the rule is: Do A if the benefits exceed those of the next best alternative course of action, and not otherwise