These quantitative analyses transform the yes-no debate over global warming into an actuarial decision: probability times expected damage equals how much we should spend now on mitigation.

• 这些量化分析使关于全球升温的不确定争论转化成为一种非常精确的结论：可能性与预期损失相乘等于我们在减轻升温现象方面的开支。