- Apparent irrelevance(as used in logic and communication)
- When something seems to not belong or matter to the topic at hand, even though it might actually serve some purpose in the conversation.
- Grice's maxims(as used in philosophy of language and communication theory)
- Four practical rules for good communication proposed by philosopher Paul Grice: be honest, be clear, be relevant, and be concise.
- Logic(Introduced as an overarching category encompassing rhetoric, poetics, sophistical syllogistic, dialectic, and demonstration.)
- The universal instrument for distinguishing between the true and the false, whose nature varies according to its objects and ends.
- Paul Grice(as a philosopher referenced in philosophy of language)
- A 20th-century philosopher who studied how language works in conversation and developed influential ideas about what makes communication successful.
- Semantic condition(Goodman proposed multiple conditions; the statement focuses on his third one.)
- A requirement or rule that must be met for a symbol system to successfully create and communicate meaning.
- pragmatic constraint(Davies's methodological constraint on art-ontological theories (Davies 2004, 23))
- The requirement that artworks must be conceived ontologically in such a way as to accord with those features of critical and appreciative practice upheld on rational reflection
- relevance(The simplest notion is containment of query terms; more refined notions weight terms by distinctiveness via tf-idf)
- The degree to which a document addresses or is pertinent to a given query or topic
- validity(Formal logic; distinguished from syntactic deducibility)
- The model-theoretic counterpart to deducibility; an argument is valid if its conclusion is true under every interpretation in which its premises are true