The fact this question continues to come up time and again after all these years prompted me to wonder why the matter hasn’t been settled by now. Thousands of people have tried their hand at pairing in a wide range of circumstances. Some swear by the practice and feel as if something is missing when they must work solo. Others are convinced pairing is pure waste and cannot possibly yield good results. Both opinions are informed by real-world experience. What specific differences in these situations resulted in such radically different outcomes?