Posted by Anonymous on Friday, December 11, 2009 at 9:54am.
I'm not sure what you are asking. That said, in cost-benefit analysis doesnt necessarily mean if one gains someone else must lose.
A coomon social policy question asks whether some change in policy is a good idea or not. Under a pure pareto requirement you would have to show that some are better off and nobody is worse off. Under a cost-benefit analysis you would need to show that the benefits to the winners exceeds the loss to the losers. This latter is very difficult unless you can measure inter-personal utilities (which you cannot). So, to say, using cost-benefit analysis, some policy change is a good idea is a normative statement -- it is based on judgement about notions of all sorts of things; fairness, equity, rightousness, etc.
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