 A common objection is to attack the Phenomenal Principle (see Barnes (1944–5); Anscombe (1965)). The objection is that the Phenomenal Principle is fallacious. It is not built into the meaning of “something appears F to one” that “one is directly presented with an F thing”. Defenders of the sense-datum theory can respond that the Phenomenal Principle is not supposed to be a purely logical inference; it is not supposed to be true simply because of the logical form or semantic structure of “appears” and similar locutions. Rather, it is true because of specific phenomenological facts about perceptual experience. But this just means that theorists who reject the Phenomenal Principle are not disagreeing about whether the Phenomenal Principle involves a fallacy or about some semantic issue, but rather about the nature of experience itself.