A pure vehicle theory of the contents of consciousness is not possible. While it is true that hard-wired tacit representations are insufficient as content vehicles, not all tacit representations are hardwired. O'Brien & Opie's definition of stability for patterns of neural activation is not well-motivated and too simplistic. We disagree in particular with the assumption that stability in a network is purely intrinsic to that network. Many complex forms of stability in a network are apparent only when interpreted by something external to that network. The requirement for interpretation introduces a necessary functional element into the theory of the contents of consciousness, suggesting that a pure vehicle theory of those contents will not succeed.