Law of lengthening limbs

 I once devoted substantial time to research the “law of lengthening limbs,” that states that “Friends, Romans, countrymen” or “Pride and Prejudice” sound better than *“Sensibility and Sense” or *“Lucinda and John.” I found it in legal doublets ("aid and abet") and in soap opera titles (“The Bold and the Beautiful,” The Young and the Restless"). This seemed both well-known and under-analyzed. My own subtitle (“Translation, Parody, Kitsch”) violated the rule, as did Mailer’s “The Naked and the Dead,” but I could find more evidence for it than against it. The real object of study here is my own weird fascination with things like this! One of many research “dead ends.”