Bits of Grice in Kasher, Implicature

Kasher's book, "Implicature" (Routledge) opens naturally with Grice's
seminal

"Logic and Conversation"


where the notion of
implicature is introduced, and their derivation is
explained by the famous Cooperative Principle and the
four super-maxims of Quantity, Quality, Relation and
Manner, which supposedly follow from it. This paper is
followed by Grice's less known


"Further Notes on Logic and Conversation"

(WoW: iii)

and by


a


3. "Retrospective Epilogue"


from 1987. (WoW)

Everything you always wanted to know about McCawley (but were afraid to ask)

JD McCawley, in "Conversational Implicature and the Lexicon, repr. in Kasher, "Implicature" (Routledge), argues that differences in use between some lexical items and complex expressions matching their suggested semantic
decomposition (i.e.; kill vs. cause to die) are due to
Grice's maxim of Quantity and hence don't provide
evidence against decomposition.

Horn in Kasher, "Implicature"

In "Toward a New Taxonomy for Pragmatic Inference: Q-
based and R-based Implicature" L R Horn
suggests two principles
(Q and R) which are intended to replace all the maxims of
conversation, except Quality. The Q-principle, hearer-
based, "Say as much as you can (given R)", and the R-
principle, Speaker-based, "Say no more than you must
(given Q)". These principles correspond to two competing
forces identified by Zipf (1949), Speaker's economy:
"(Given m meanings) a vocabulary of one word which will
refer to all the m distinct meanings", and Auditor's
economy: "a vocabulary of m different words with one
distinct meaning for each word".