Frankfurt cases
Frankfurt cases (also known as Frankfurt counterexamples or Frankfurt-style cases) were presented by philosopher Harry Frankfurt in 1969 as counterexamples to the principle of alternate possibilities (PAP), which holds that an agent is morally responsible for an action only if that person could have done otherwise. == Principle of alternate possibilities == The principle of alternate possibilities (PAP) forms part of an influential argument for the incompatibility of responsibility and causal determinism, often called the core argument for incompatibilism.