The problem is that an unobservable and imprecise variable – whose estimates are too inexact and volatile to provide more than a rough roadmap for a country’s journey toward fiscal rectitude – has become part of an international treaty and the national rules (sometimes of constitutional status) through which it is implemented.
问题在于，一个不可观察又不准确的变量——其估算既不严格，又容易波动，甚至无法提供粗略的迈向财政诚实之路——成了国际条约和国家规则（有时甚至拥有宪法地位）的一部分，并得到了实施。