The Criteria Reconciled
IN THE PRECEDING two chapters I have described two conflicting intertemporal criteria and a little of the spirit of each. But as we have seen in chapter 8, one criterion is not "incorrect" because it conflicts with another. Different criteria embody different desiderata and work with varying suitability in different situations. In deciding how to select and use criteria, the proper way to proceed is to write down the properties and implications of each criterion and the conditions under which each is most suitable. Once this is done it may be possible to select a criterion or combination of criteria that best matches the existing conditions and social goals.