"Isn't the thought actually pretty terrifying that one of us thinks that he has existed for 22 years, even though he has not been alive for even a day?" Gravis B said.
They both sat in the middle of the "arena". It was rather hard to determine the middle of this ever-ongoing expanse of nothingness, but they decided that the middle should be where the distance to each door was about the same.
Gravis A nodded. "It really is terrifying," he said. "On top of that, if everything is the same for both the copy and the original, is there even a copy and an original?"
Gravis B rubbed his chin. "Well, one of them has actually lived for longer than the other, so an original should exist," he explained and then lifted a finger. "I think what you meant to say was that one might not be alive or a real human."
Gravis A also scratched his chin. "Yeah, that should be more accurate. One has been birthed by two people, while one has been created by Heaven."