ABSTRACT
If you commit murder you ought to do so gently. Suppose then that you do commit murder. Then you ought to do so gently. Now from you ought to do A it follows that you ought to do anything logically implied by A. (For example, from I ought to help my mother and spend time with my children it follows that I ought to help my mother.) You are murdering gently entails you are committing murder. So it follows that you ought to commit murder.
