Abstract

I defend the principle of alternative possibilities against what are sometimes known as buffer cases, which are supposed by some to be counterexamples to the principle. I develop an existing problem with the claim that standard buffer cases are counterexamples to PAP, before responding to a recent attempt by Michael McKenna to modify the cases in a way that circumvents this problem. While McKenna’s strategy does avoid the problem, I argue that it faces a different difficulty. I conclude that buffer cases pose no threat to PAP.