“But the longer the chain of inference, and the less trust you have in the theories used for inference, the less real objects become. In this layered reality the multiverse is currently at the outer fringes. It’s as unreal as something can be without being plain fantasy. For some practitioners who greatly trust their theories, the multiverse might appear almost as real as the universe we observe. But for most of us these theories are wild speculations and consequently we have little trust in this inference.”
Yes, this excellent, gentle answer to the question. I enjoyed the read, giving due respect to the hard work being done by the marvelous theoretical physicists in the field who are fans and teachers of the very popular multiverse and your finishing conclusion was marvelous. “It’s as unreal as something can be without being plan fantasy”.
The entire article gives respect while putting it into the proper place along with a gentle reminder about the danger of placing trust in one’s own theories but you did so in as non-judgemental a manner as I’ve seen.