 In some ways, the scheme approach to argument assessment rectifies problems that arise in systems of informal logic that adopt the fallacy approach to argument evaluation. For traditional fallacies which have non-fallacious instances can be understood, not as fallacies, but as argumentation schemes which are legitimate forms of reasoning when they are properly employed. Fallacy definitions can be turned into scheme definitions by identifying a list of critical questions (or required premises) that specify what is required to make the arguments in question valid. 