 Following Johnson and Blair (1977, 1994), many systems of informal logic adopt an ARS version of these AV criteria, making “Acceptability, Relevance and Sufficiency” the requirements for good argument. On this account, premises are acceptable when they are true or acceptable in some other way; relevant when they provide some (i.e. any) support for the conclusion of the argument; and sufficient when they provide enough support to warrant its acceptance — as likely, true, plausible, etc. 