The fine-tuning is so striking that even committed atheists have abandoned ordinary appeals to chance. Instead they say there must be countless universes—a multiverse—and ours is just one of the lucky ones right for life. These other universes are, by definition, undetectable, so believing in the multiverse requires a faith commitment. Plus, the multiverse would itself need to be fine-tuned in order to spit out even the occasional universe capable of supporting life,10 so the hypothesis merely moves the fine-tuning problem off-stage. It doesn’t solve it.
