The first section of this collection offers an introduction to the doctrine, its purpose, its claims, and the issues it raises for moral philosophers. Sections two and three take the form of a debate by several influential thinkers about the validity of the doctrine and the many problems surrounding it. The authors in section two defend the doctrine; those in section three oppose it. Sections four and five focus on applications, concrete and theoretical, of the doctrine, showing its possible uses and misuses.

The first section of this collection offers an introduction to the doctrine, its purpose, its claims, and the issues it raises for moral philosophers. Sections two and three take the form of a debate by several influential thinkers about the validity of the doctrine and the many problems surrounding it. The authors in section two defend the doctrine; those in section three oppose it. Sections four and five focus on applications, concrete and theoretical, of the doctrine, showing its possible uses and misuses.