 Not all acquaintance theorists require acquaintance with the correspondence (or some other epistemically relevant relation) between some thought or proposition and a distinct fact for one to have knowledge by acquaintance. Rather than require a further act of awareness, some acquaintance theorists add constraints to the nature of the foundational belief or the manner in which it is formed so that acquaintance with some mental state or mental feature provides part of the content of the belief itself, and does so in such a way as to guarantee the truth of the belief. For example, according to McGrew (1995, 1999), for any object of acquaintance or direct awareness, it is possible to form a belief in which a demonstrative concept refers directly to it. By virtue of my acquaintance with a painful experience, I believe directly of it that it exists, or that the property (painfulness) is instantiated. We could express the belief roughly by saying “I am experiencing this” (McGrew 1995, 1999), or “this is instantiated (in me, now)” (Gertler 2012). For this kind of belief (unlike most other beliefs regarding contingent facts), to genuinely understand or grasp the content of the belief is to grasp its truth. 