Immortality is almost certainly impossible. Well, it’s almost certainly impossible with one exception. There’s one form of immortality that seems disconcertingly possible, and that is uploading our minds into a digital format. Sounds great, right? Except that in a lot of ways, mortality is what makes us human. There’s also the tricky matter of whether or not our digital copies are really us or not. Go ahead and grapple with this conundrum via the video below—we’ll just stick with our real world bodies.