 Even in these latter cases, systems and accounts of informal logic shared some core notions with their formal cousins. Most significantly, formal and informal logic assume (i) a premise, inference, and conclusion conception of argument; (ii) the notion that a good argument has premises which are true (or “acceptable”) and a conclusion which follows from them (making the inference the argument depends on “valid” in some way); and (iii) the idea that many arguments can be assessed by treating them as instances of more generalized forms of argument (“schemes of argument” which include standard deductive patterns of reasoning). 