Grice used the term ‘non-natural meaning’ for this use of ‘mean’, and in more recent literature this jargon has been replaced with the term ‘speaker meaning’.[13]  After distinguishing between natural and (what we shall hereafter call) speaker meaning, Grice attempts to characterize the latter. It is not enough that I do something that influences the beliefs of an observer: In putting on a coat I might lead an observer to conclude that I am going for a walk. Yet in such a case it is not plausible that I mean that I am going for a walk in the sense germane to speaker meaning. Might performing an action with an intention of influencing someone’s beliefs be sufficient for speaker meaning? No: I might secretly leave Smith’s handkerchief at the crime scene to make the police think that Smith is the culprit. However, whether or not I am successful in getting the authorities to think that Smith is the culprit, in this case it is not plausible that I mean that Smith is the culprit.