Types of Polylogism
A polylogist would claim that different groups reason in fundamentally different ways: they use different "logics" for deductive inference. Normative polylogism is the claim that these different logics are equally valid. Descriptive polylogism is an empirical claim about different groups, but a descriptive polylogism need not claim equal validity for different "logics". That is, a descriptive polylogist may insist on a universally valid deductive logic while claiming as an empirical matter that some groups use other (incorrect) reasoning strategies.
An adherent of polylogism in the Misean sense would be a normative polylogist. A normative polylogist might approach an argument by demonstrating how it was correct within a particular logical construct, even if it were incorrect within the logic of the analyst. As Mises noted "this never has been and never can be attempted by anybody."
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