A really interesting and perfect book to understand quantum theory buckles. The explanations are simple and the reversal of perspective (vs String Theory) is exciting. I regret that some items be evacuated a little faster, the Higgs field is swept with a wave of the hand, for example. Able to other authors of quantum physics, I was amused by the slightly cynical tone of Carlo Rovelli in contrast to the usually-euphorico lyrical impulses of physicists who take the time to popularize.