‎The problem of missing premisses

Theorists of argument suppose that arguments with definite conclusions that do not follow logically from their premiss or premisses have a “gap-filling” unexpressed premiss, whose identification and addition to the stated premiss or premisses would produce an argument whose conclusion does follow logically. A common explanation for the omission of a premiss, found from Aristotle to Quine and Copi, is that arguers leave unstated known …