A very short thread on English grammars (plural) inspired by interviewers' questions to the inimitable and ever-patient @BCDreyer: 1) A grammar is a framework for intelligibility. 2) Spoken and written language have separate grammars... since speech and writing have different demands; we speak in utterances, not sentences; speech is generally transient, writing less so. 3) Social media/instant messaging is, relatively speaking, an extremely new sphere of language usage...