 Scholars have debated the relationship between these four techniques, some suggesting that they are a sequence of steps employed in the process of establishing a claim, others that they are inference procedures. It is unlikely they form a fixed sequence of steps, since rhetorically in many cases giving an analogy might make presenting parallel claims unnecessary, or “pulling” (appealing to the opponent’s precedent) alone might be sufficient to establish one’s point. Probably there is no fixed relation between the four, and disputers may apply one or more of them as needed to make their case. Frequently, using just one may be sufficient. 