 There are also consciousness-based accounts of mind that do not depend on an original/derived intentionality distinction (as do Searle’s, Kriegel’s, and Mendelovici’s). Consider, for example, the argument proposed by Kirk Ludwig (1996a). He argues that consciousness is needed to rightly draw the boundaries of an individual’s mind—for there is nothing to determine whose state of mind a given non-conscious state of mind is, unless that state consists in a disposition to produce a conscious mental state of the right sort. Alleged mental processes that did not tend to produce someone’s conscious states of mind appropriately would be no one’s, which is to say that they would not be mental states at all. Roughly: consciousness provides the unity of mind without which there would be no mind. Only with consciousness do we have a suitable boundary between what’s in a mind, and what’s outside of it. And Ludwig argues that it is therefore a mistake to attribute to our minds many of the unconscious inferences with which psychological theorists have long been wont to populate the brain’s visual system.