Victor Stenger, a retired physics prof from the University of Hawaii, has given us two books that explain both atheism and “multiverses”, and behold, they are one. Few other proponents of multiverses are quite as forthcoming with their logic, but clearly something besides data must motivate the science of multiverses, because by definition multiverses are not observable. Stenger makes the connection explicit, whereas Hawking or Susskind is a little more coy with their metaphysics. Multiverse-theory is designed for one purpose, and one purpose only, and that is to defend atheism. It makes no predictions, it gives no insight, it provides no control, it produces no technology, it advances no mathematics, it is a science in name only, because it is really metaphysics.
In Stenger’s first book, G-d: the failed hypothesis, he argues that Science is an independent and more reliable way to truth than metaphysics. And in his second book, The Fallacy of Fine-Tuning, he argues that metaphysics (multiverse theory) is a more reliable guide than science (design-detection). With these two books then, we can get anything we want, except ethics. And metaphysics. And science.