“Scientists and inventors alike, they first guess a new explanation—a hypothesis—as wild and innovative as they can conjure. And then they test it rigorously, their hearts filled with the hope they’ll find a door or a window that reframes their understanding of the universe, of life, of a flower, or a cure for cancer. And it all starts with a guess, a good explanation as unlikely as it is plausible. A story at the knife’s edge of innovation, bleeding truth and pushing the limits of knowledge further afield. That impossibly sharp place where dreams and reality converge. A hard-to-vary idea as powerful as the one that broke Einstein’s General Relativity and his assumption that the laws of nature don’t depend on the motion of an observer.” David Deutsch Book:Parity Source: Parity