this post was submitted on 18 Sep 2026
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I’d use a teleporter with no hesitation. What’s important is my memories and sense of self, not the actual meat it’s in. I could find out I’m a copy of myself right now and not be bothered.
Yeah but once you step in the teleporter you stop being. The copy is only useful for other people to keep interacting with your clone, but the actual you is dead.
What happens to "you" several years from now when every cell in your body has been replaced by mitosis?
It's a "I think therefore I am" kind of thing. I know I'm the same person I was five years ago, just with some new memories, and some memories have faded. But I am still the same person.
I don't know whether you are the same person you were five years ago.
The show "Earth 2" in the 90s had an interesting concept in the backstory where not every human had a soul, and they made a device that could detect whether people had souls. I sometimes wonder if that's the case, not everyone is actually a sentient being and just a biological machine.
Of course there's no way to know, so we have to assume that if someone is a human, they are sentient. Same logic as the TNG episode "Measure of a Man", but it applies to humans just as it does to robots.
So what? There would be persistent awareness. The new me would remember everything up to the old me’s death and keep living. I’m fine with that.
If you don't mind there's no problem, of course, but quite a few people want to keep living. If you told a terminally ill person "so you'll die, but don't worry cause we can clone you and tell everybody you got better" I think "oh well then no problem" wouldn't be a universal answer.
Would you be cool going into the execution chamber and getting shot to transport yourself? Would the memory of the death make a difference, or the ability to visit your previous remains? What happens if there is an accident and the new you wakes up, but the execution chamber fails and the old you is still alive?
As far as you know. You wouldn't know what they modified.
Id be more fine with not remembering but to each their own
There's no “actual” you. Your body creates a sense of an “I”. If you copy that body including the brain, the copy will have the same. You wouldn't say that the copy’s sense of smell is somehow different, so why make a distinction for the sense of self?
Because I don't really care about what the copy can do and think, because I'll be dead. My self disappears, even if someone else has a copy of it.
What makes you think that “your self” exists as anything else but an emergent property of your brain existing?
You're just describing a feeling that we all share, but there's no indication that it's more than that. Check out my writings about this topic (link to a scientific book coming to the same conclusion at the end)
https://phil.red/blog/2025/9/5/identity-illusion
A man cannot step into the same river twice
I think this idea and confidence hold extremely true until you think about Elon Musk.
I have no idea what you mean lol
His machine would not work very well.
Actually, now that I think about it, it's far worse than that. If a company has a teleporter that can build a copy of you, they can also build an almost-copy of you. Say, a copy that is less rebellious. More obedient.
Yeah, the idea's cool in fiction, but in reality I would never touch a machine like this. I will walk my ass over in analogue.
I'm a biologist. Perfectly recording something is very very far removed from understanding something enough to make targeted modifications.
Specific changes, maybe. But broad ones? "Uehhh, make the amygdala smaller. Squash it. ... Well, find a mapping of a guy with a smaller one, then. Do like a copy paste."
All I'm saying is they would try, and trying is enough for me to nope the fuck out of all of it.
Who guarantees the copy is exact? I don't think we can do checksums on living bodies.
We can, but we won't.
Try new Coke.
Well I imagined we were talking about an imaginary sci-fi technology. Obviously it would be more complicated and possibly at risk for some kind of manipulation in real life. If I were presented a teleporter where the only fault is a philosophical question about being a copy, then I don’t mind being a copy and my original self dying.
That feels like a very different statement than saying you don't mind stepping into the teleporter knowing you will die while a copy continues from where you left off on the other side.
yeah I did realize that after thinking about it. Still I’m not sure. I guess it depends on what that experience is like.
Everybody says it's fine