This reflects a general weakness in the multiverse solution to the fine-tuning problem: What explains the fine-tuning of the multiverse? The multiverse itself is presumably the consequence of some underlying laws or principles. If those laws had been different, there might have been just one universe, not a multiverse. So we need to explain this fine-tuning too. It won’t help to postulate a higher-level multiverse in which our multiverse is contained, since this just iterates the problem. So we need some other solution here. Perhaps fine-tuning for a multiverse was unsurprising, or perhaps it
...more
