Sean Carroll, How Many Versions of You Are in the Universe?

Dave talks with Sean Carroll, a theoretical physicist at CalTech who hosts the popular podcast Mindscape. His new book, Something Deeply Hidden, dives into the bizarre and unsettling theory of quantum physics - the idea that you are not the only version of yourself in the universe. Copies of you are generating thousands of times every single second, at every point where something that could have happened to you, didn't - no matter how small.