 It must be acknowledged that a change in definitions has crept into the literature, and many contemporary theorists understand ‘compatibilism’ and ‘incompatibilism’ as claims about moral responsibility (or “moral freedom” or the freedom that “grounds” or “explains” “moral responsibility”) rather than claims about free will (Pereboom 1995, 2001, 2014. See Vihvelin 2011 for discussion). This entry will not follow that usage.