“Stimulating . . . encourage[s] readers to push past well-trod assumptions […] and have fun doing so.” —Science Magazine “Hossenfelder is a rare gem. There are other theoretical physicists out there who can write for a popular audience, but very few of them are able to do so in such a no-nonsense way. The result is not just illuminating, but enjoyable.” —Charles Seife, author of Decoding the Universe From renowned physicist and creator of the YouTube series “Science without