One of the most intuitive forms of argument, Analogy is the common form of inductive inference, taking one causal relationship and relating it to another. It is evaluated this way:
- The number of entities observed in the analogy.
- The variety, or number of respects observed in the analogous entities.
- The similar attributes observed in the related entities.
- The similarity of observed causal connection in the entities.
- The dissimilarities observed in the comparison, by number, variety and importance.
- How strong an assertion of similarity may be made in the analogy. (Intuitively: “This is EXACTLY like…”)