In the entry entitled "Paradigmata" in his study, "'The Written' as the Vocation of Conceiving Jewishly", John W McGinley gives an accounting of how this name functions in the Bavli's version of "four entered pardes". This account maintains that "Ishmael ben Elisha" is a rabbinically sanctioned cognomen for Elisha ben Abbuyah (the "Akher" of the Bavli's account). This hypothesis explains why the generators of the "chambers" portion of the Heikhalot literature make "Ishmael ben Elisha" the major protagonist of their writings even though this Rabbi Ishmael was not directly mentioned in the Bavli's account (in the Gemara to tractate Khaggigah) of "The Work of the Chariot".