I know what I am about to write will be controversial among atheists–one of them may (?) be a certain professional physicist who writes regularly for The Secular Outpost–but I have never agreed with the idea of appealing to the hypothesis of multiple universes (“multiverse”) as an objection to the fine-tuning argument for God’s existence. Philosopher Bradley Monton is much more knowledgeable about the intersection of philosophy and physics than I am, so I felt good to discover he has the same concerns I do.
Some physicists seem to think that the only good reply to the fine-tuning argument for God is an appeal to many universes. If that’s right, that puts the fine-tuning argument on pretty strong ground.
FWIW, I posted something to The Secular Outpost about 5 years ago with a link to a sophisticated critique of the multiverse hypothesis. LINK