Entailment accounts of ontological commitment (§2) get this right, but only by dodging the hard questions. Thus, if modal operators are disguised quantifiers over possible worlds, then modal theories will be ontologically committed to possible worlds according to an entailment account: possible worlds must exist in order for the theories to be true. If modal operators are not disguised quantifiers over possible worlds, then modal theories need not be ontologically committed to possible worlds according to an entailment account. An entailment account will accurately reflect the ontological truth; but it does nothing to help us discover that truth. 