  There is some doubt about whether Walker’s version of the specification objection succeeds. Coherence theorists can reply to Walker by saying that nothing in their position is inconsistent with the view that there is a set of propositions which is believed. Even though this objective fact obtains, the truth conditions of propositions, including propositions about which sets of propositions are believed, are the conditions under which they cohere with a set of propositions. For a defence of the coherence theory against Walker’s version of the specification objection, see Young (2001).