BBC 地平線：我們身處哪個宇宙 地平線：我們身處哪個宇宙 Horizon: Which Universe Are We In?

                          Imagine a world where dinosaurs still walk the earth. A world where the Germans won World War II and you are president of the United States. Imagine a world where the laws of physics no longer apply and where infinite copies of you are playing out every storyline of your life.                                                          It sounds like a plot stolen straight from Hollywood, but far from it. This is the multiverse.                                                          Until v...