Grice's Conversational Catalysts for the Implicatum

Why is a conversational implicatum cancellable, if it's such a reasonably thing to convey?

We should now show that, a conversational implicatum, being what it is, it must possess certain features.

Since, to assume the presence of a conversational implicatum, we have to assume that at least the principle of conversational helpfulness is being observed, and since it is always possible (even at Oxford) to opt out of the observation of the principle of conversational helpfulness, reasonable as I find it, it follows that at least a generalised (if not always a particularised) conversational implicatum can be canceled in a particular case.

And a particularised conversational implicatum, ditto. 

"Smith has beautiful handwriting, and he's English is grammatical; surely I don't want to imply that he is no good at philosophy."

Impeccable tutorial behaviour.

The implicatum may be explicitly canceled, by the addition of a clause by uttering which the utterer states or explicitly conveys or implies that the utterer has opted out, or it may be contextually canceled, the form of utterance that usually carries it is used in a context that makes it clear that the utterer is opting out. 


2. Insofar as the calculation that a particular conversational implicatum obtains or is present requires, besides contextual and background information only a knowledge of what has been said, our "p" (or, to speak roughly, the conventional commitment of the utterance).

Insofar as the manner of expression plays no role in the calculation (any variant will do), it will not be possible to 'detach,' i.e. to find another way of saying the same thing, but 'implicatum-free', i.e. which simply lacks the implicatum in question, except where some special feature of the substituted or alternate version is itself relevant to the determination of an implicatum (in virtue of this or that maxims comprising the desideratum of conversational clarity -- 'be perspicuous [sic]!'). 

If we call this feature non-detachability, one may expect this or that generalized (and some or other particularised) conversational implicatum that is carried by a familiar, non-special locution to have a high degree of non-detachability. 

To speak approximately, or roughly, since the calculation of the presence of a conversational implicatum presupposes an initial knowledge of the conventional, or explicit, or explicitly conveyed force, p, of the expression by the uttering of which the utterer conversationally implies that q, a conversational implicatum will be a condition that, by definition, i.e. analysis, or analytically, or tautologically, or conceptually, or definitionally, is NOT included (or MUST be expluded, rather, *pace* Witters) in the original specification of the expression's conventional force, p.

Otherwise we end up saying all the ridiculous things such as "What is known to be the case is not believed to be the case," or "What is actual is not also possible," and so on and so forth!

THAT is what I'm attacking about the now rather dated form that was once so popular at Oxford in the glory days of 'linguistic botanising,' when a philosopher would have detected this or that linguistic nuance, and rush ahead, embarking on the risk of colliding with the linguistic facts, to exploit the nuance to defend this or that particular philosophical theory (or most likely to rebut an opposing one) before he even cares to clarify what the nuance is! 

Now we know it's all about the principle of conversational helpfulness.

Though it may not be impossible for what starts life, so to speak, as a conversational implicatum to become conventionalised, to suppose that this is so in a given case would require special justification. 

So you are warned. Polysemy is even worse!

So, initially at least, a conversational implicatum surely is not part of the meaning of the expression to the employment of which they attach, even if, OBVIOUSLY, by uttering x, by which the utterer explicitly conveys that q, the utterer conversationally implies that p.

This distinction was rarely made (or strictly, all too often ignored) by Austin, and apparently denied by Witters!

Since the truth (or satisfactoriness) of a conversational implicatum is thus NOT required by the truth (or satisfactoriness) of what is said or what is explicitly conveyed, p -- cancellation implies non-factivity, and what is said may be true or satisfactory and what is implicated may be false or unsatisfactory), the implicatum is not carried by what is said or explicitly conveyed, but only by the UTTERER by his uttering of what is said, or explicitly conveyed, or by 'putting it that way,' as I prefer.

Since, to calculate, or work out or abduce, a conversational implicatum is to calculate what has to be supposed in order to preserve the supposition that the principle of conversational helpfulness is being observed, and since there may be various possible specific -- all reasonable -- explanations, a list of which may or should be open, the conversational implicatum in such cases will, strictly, be a disjunction of all such specific explanations.

If the list of these is, as it should be, open, the implicatum will have just the kind of indeterminacy that this or that implicatum does in fact seem to possess, at least at Oxford at Collections and as uttered by your favourite don, or tutorial fellow in philosophy if you mustn't!