Some commentators have worried that Locke’s “locked room” example is a problematic illustration of his theory of voluntariness, at least as applied to forbearances (e.g., Lowe 1986: 154–157; Stuart 2013: 420). Locke imagines a man who is “carried, while fast asleep, into a Room, where is a Person he longs to see and speak with”, but who is “there locked fast in, beyond his Power to get out: he awakes, and is glad to find himself in so desirable Company” and “stays willingly” in the room. Locke makes clear that, on his view, the man’s remaining in the room is a voluntary forbearance to leave (E1–5 II.xxi.10: 238). But one might worry that if the man is unable to leave the room, then it is false to say that his volition not to leave causes his not leaving. At best, it might be argued, the man’s not leaving is overdetermined (Stuart 2013: 420). But, as some authors have recently argued, cases of overdetermination are rightly described as involving two (or more) causes, not a single joint cause or no cause at all (see, e.g., Schaffer 2003). On such a view of overdetermination, it is unproblematic for Locke to describe the man in the locked room as caused to remain both by his volition to remain and by the door’s being locked.[4]