But the appropriateness of thus discounting future costs is less clear when the issue is averting future costs that are largely nonpecuniary and have national or global impact.

• 但问题是,预期成本很大程度上并不是金钱,而且非金钱的成本对国家和全球影响还很大,这就会使预期成本打折,从而上面的假设是不恰当的。