 Austin goes on to discuss two apparently quite different modes of assessment for utterances of the two apparently different types. Constatives, as already noted, are assessed along the dimension of truth and falsehood. By contrast, performatives are assessed along dimensions of happiness and unhappiness, or felicity and infelicity. Taking the example of an utterance of “I take … to be my lawfully wedded … ”, and simplifying Austin’s discussion, there are two main sorts of unhappiness, or infelicity, to which this performative is liable. First, there are misfires: