 In the early to mid 1960s Austin’s speech act theory and Grice’s account of communicative intentions began to merge. The connection is discussed in Strawson 1964. Strawson inquired whether illocutionary force could be made overt by means of communicative intentions. He concluded that when it comes to highly conventionalized utterances, communicative intentions are largely irrelevant, but that on the other hand, convention does not play much role for ordinary illocutionary types. Strawson also pointed out a difficulty with Grice’s analysis: it may be the case that all three conditions (i-iii) are fulfilled, but that the speaker intends the hearer to believe that they aren’t (for instance, if the speaker wants the hearer to believe that p for reasons altogether independent from his making the statement).