I always try to classify disciplines into three groups; the qualitative, the quantitative, and amalgam of the two. Whenever I think of qualitative disciplines, or those that involve value-judgments, literature, fine arts, and law come into my mind. What fascinates me about these “qualitative disciplines” is that they are not as objective or structured as quantitative disciplines like chemistry or physics in that they don’t measure the properties of things. Rather, they study the invisible and non-calculable properties of an object. Hence, while scientists can profess the use scientific method and mathematics in re-evaluating their calculations should they find their conclusions somewhat doubtful, qualitative scholars like lawyers can only rely on their unstructured and abstract interpretation of facts.
How can we show that qualitative reasoning can also be systematic? In other words, if we can say that mathematics is the language of the natural sciences, then what is the language or tool used in qualitative disciplines?