In the normal course of inquiry, the fundamental types of inference proceed in the order: abduction, deduction, induction. However, the same building blocks can be assembled in other ways to yield different kinds of complex inferences. Of particular importance for our purposes, reasoning by analogy can be analyzed as a combination of induction and deduction, in other words, as the abstraction and application of a rule. Because a complicated pattern of analogical inference will be used in our example of a complete inquiry, it will help to prepare the ground if we first stop to consider an example of analogy in its simplest form.