There's an infinite number of observers in this universe. And it's very hard to take infinity divided by infinity to figure out what fraction of people will see a certain thing. That's the measure problem in my mind. Yeah, I think it's one version. There's a different aspect which I think is closely greater to what you say. So there is, it's almost not setable, setable by rational arguments because you could turn all, you could turn a negative outcome into a positive outcome by changing what you mean by we.
Is there a multiverse, and if so, how should we think of ourselves within it? In many modern cosmological models, the universe includes more than one realm, with possibly different laws of physics, and these realms may or may not include intelligent observers. There is a longstanding puzzle about how, in such a scenario, we should calculate what we, as presumably intelligent observers ourselves, should expect to see. Today's guest, Thomas Hertog, is a physicist and longstanding collaborator of Stephen Hawking. They worked together (often with James Hartle) to address these questions, and the work is still ongoing.
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Thomas Hertog received his Ph.D. in physics from the University of Cambridge. He is currently a professor of theoretical physics at KU Leuven. His new book is On the Origin of Time: Stephen Hawking's Final Theory.
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