 Humberstone (2000a, 368) challenges rejectivism, by asking the rejectivists to “show how the claim for the conceptual priority of rejection over negation is any more plausible than the corresponding claim for the conceptual priority of alterjection over disjunction—or indeed, ambi-assertion over conjunction,” where alterjection (ambi-assertion) is the supposedly primitive speech act the linguistic embodiment of which is disjunction (conjunction).