It sometimes opens your mind to new things that we might possibly one day be able to do.'” “I was trying to say, ‘Physics isn’t just something that tells you stuff that you can’t do. “This is exactly what I was hoping to achieve with the book,” she says. While there’s currently no scientific evidence for multiverse theory or the simulation hypothesis, Hossenfelder says there are still plenty of cool ideas, including weather control, faster-than-light communication, and creating new universes, that don’t contradict known science. “As a physicist who has to think about how you actually simulate the reality that we observe on a computer, I’m telling you it’s not easy, and it’s not a problem that you can just sweep under the rug.” “If people go and spit out numbers like, ‘I think there’s a 50 percent chance we’re living in a simulation,’ I’m not having it,” she says. It’s an idea that’s been taken increasingly seriously by scientists and philosophers, but Hossenfelder says it really amounts to nothing more than a sort of techno-religion. Hossenfelder is also skeptical of the simulation hypothesis, the idea that we’re living in a computer simulation. “There are certainly some people who have been pushing this line a little bit too far-probably deliberately, because it sells-but I think for most of them they’re genuinely confused.” “I know quite a lot of cosmologists and astrophysicists who actually believe that other universes are real, and I think it’s a misunderstanding of how much mathematics can actually do for us,” she says.

Hossenfelder says it’s possible to create mathematical models that are consistent with multiverse theory, but that doesn’t necessarily tell you anything about reality. Multiverse theory states that an infinite number of alternate universes are constantly branching off from our own.

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