Part 13/23:
Multiverse, Infinite Realities, and Parallel Versions of Ourselves
A mind-bending portion of the conversation involves the multiverse hypothesis—that infinite regions beyond our observable universe could harbor realities with slight or drastic differences. This includes the concept that multiple versions of "you" exist elsewhere, perhaps with different decisions, circumstances, or identities.
Greene acknowledges that while these ideas sound like science fiction, they stem logically from consistent mathematical theories. They are controversial among physicists, many seeing them as untestable and thus less scientific, yet Greene advocates that the mathematics strongly suggests their validity and richness of universe structure.