So I've recently been reading Summoning Spirits. It's an interesting book, but something that struck me is that the rituals in it are as Jewish as the proverbial Bar Mitzvah.

This begs a couple of questions.

1) How do people who adhere to non-Abrahamic religions perform evocations?
2) Are these rituals intended to imply that Judaism genuinely is "the truth," in a supreme or objective sense, to a greater degree than that of other religious systems?