Arguments supporting causal statements and testing causal hypotheses are a common and important kind of
inductive argument. For this discussion, construct three simple arguments supporting a causal hypothesis.
Construct one using the paired unusual events principle, a second using the common variable principle, and a
third using the co-variation principle. For inspiration, think about recent events, major or minor, in which you have had to explain something to yourself or others. Although you might not have used the terminology, you probably formulated causal hypotheses, and there is a good chance you identified one of them as the most likely explanation by using one of the three principles—or something close to them.