 The difficulties that have beset the definitions of truth-making proffered so far have suggested to some philosophers that a pessimistic induction is in order: that the project of defining truth-making in more basic terms is misconceived, much as the project of defining knowledge in more basic terms has come to seem misconceived because e.g., of the Gettier cases. But there’s no gain to be had from, doing nothing more than declaring the notion of a truth-maker to be primitive. If it’s primitive then we also need to know how the notion may be fruitfully applied in association with other concepts we already deploy—entailment, existence, truth etc.—to describe the interplay of truth-bearers and the world. As Simons remarks, 