Part 8/12:
At the heart of these discussions lies the question of selfhood—what it means to be "you" as branches of your existence proliferate across the multiverse. Brian Greene posits the intriguing idea that, in a multiverse, each copy of you exists and thinks they are the true you—this truth is the sum total of all branches. In contrast, Lev Vaidman argues that although duplicates exist, the original identity is singular, creating a conceptual rift in understanding selfhood.