It is widely thought that moral obligations are necessarily guidance giving. This supposed fact has been put to service in defence of the ‘ought-implies-can’ principle according to which one cannot be morally obligated to do the impossible, since impossible-to-satisfy obligations would not give guidance. It is argued here that the supposed fact is no such thing; moral obligations are not necessarily guiding giving, and so the ‘guidance argument’ for ought-implies-can fails.

中文翻译：

---

光度失败、规范指导和“应该-暗示-可以”原则

人们普遍认为，道德义务必然是给予指导。这一假定的事实已被用于捍卫“应该暗示可以”原则，根据该原则，一个人在道德上没有义务去做不可能的事情，因为不可能满足的义务不会提供指导。这里有人争辩说，假定的事实并非如此。道德义务不一定指导给予，因此“应该-暗示-可以”的“指导论证”失败了。