Given that all semi-plausible measures don't work, multiverse scientists attempt to start backward by assuming their desired result—that our universe is typical—and searching for a measure that would make it happen. Even with this contrived approach and even after decades of searching, they have still been unable to find a measure that would make our special universe typical.
While this is a serious issue in its own right, the third layer of the measure problem runs even deeper than multiverse scientists’ inability to find the “right” measure. Even if, at some point in the future, they were to find some contrived measure that happens to make our universe typical, this measure wouldn't be intuitive or self- justifying. After all, there are dozens or more intuitive measures that could have theoretically existed but have, over the years, demonstrably failed to make our universe typical. Therefore, this hand-picked measure would be subject to the all-important question: What fine tuned and designed the special measure that makes our complex universe typical, as opposed to all the intuitive measures that make our universe atypical?
Physicist Paul Steinhart in his Scientific American article, 'The Inflation Debate', gets to the essence of this problem:
“Measure enthusiasts take a trial-and-error approach in which they invent and test measures until, they hope, one will produce the desired answer—that our universe is highly probable. Even if they someday succeed, they will need another principal to justify using that measure instead of the others, yet another principle to choose that principal, and so on.”
This argument clearly demonstrates that even if a contrived measure were discovered, it would still point right to an intelligent cause that selected this particular measure for the purpose of making our complex universe typical. Therefore, the whole approach of using measures to rescue multiverse's typical universe premise and explain fine tuning without God is due to failure.
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“Is the Multiverse Real?”
Physics to God Podcast
🎙️4/24/25 (PDF Version)
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