Grice, The Logic of ! and ¡

In a previous post to this blong, and donkey ears before as they say (well, a spring or two) in the august pages of Philosophy and Literature, I advanced some lines along Grice's

erotetics

i.e. his logic of ? and ¿ (Who killed Cock Robin? Jenny Wren). There are two types of questions by Grice, and therefore two types of answers: x-questions and yes/no/truth-value gap questions. The quantifiers can iterate, who and when killed Cock Robin, etc. Sources: Grice WoW:iii and Grice 2001.

Now for orders.

I have seen, and recently too, someone reporting that Grice had his maxims, e.g.

do not say what you believe to be false

as

do not say what you believe to be false!

---

But Grice never used the "!". It seems slightly rude.

You can say, "Shut up!" but for longer, more articulated things, the "!" is _understood_.

A compliance of an an order, I symbolise as ¡

e.g. "Yes, I shut the door".

Etc.