Informal logic
Informal logic ( also Informal logic based on the English term Informal logic) is a subfield of argumentation theory.
Informal logics aim to analyze normal linguistic arguments with logical methods and evaluate. It is the fact that logic is this applied to non - formal phenomena such Alltagsargumention, mass media or non- formal scientific argumentation structures into account. On one hand, the argument term is massively expanded by eg To examine pictorial representation theory with argumentation there matic methods, on the other hand are the results that will be developed in the discipline, not mandatory. Informal - logical conclusions - unlike formal- logical conclusions - not rely on deductive necessary structures and therefore informal circuits lack the logical necessity.
The term Informal logic established in the Anglo-Saxon world in the 1970s and is recycled content in the rule to the post- logicist preliminary work of Stephen Toulmin and Chaim Perelman in the late 1950s. Approaches such as the pragma - dialectics are often attributed to the field.