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0 pointsjerf6y ago0 comments

"If quantum immortality is true, and I, knowing that, step in front of a car, how is it going to prevent my bones from breaking?"

Quantum immortality doesn't promise health. It promises consciousness.

It is in fact a horrible idea and you better damned well hope it is false, because it looks a lot less like "I'm going to live forever in at least some fraction of the multiverse and be healthy and happy!" and rather a lot more like SCP-2718 [1]. Probably without the pain in question, but certainly with your consciousness stuck in a body that is literally minimally capable of being conscious and nothing else, past the heat-death of the universe, until the point where even quantum randomness isn't enough to keep you conscious, assuming that such a point can even arrive. QI doesn't protect your mobility, your senses, your health or happiness... just your consciousness. On the plus side, "minimal consciousness" doesn't necessarily entail a great deal of awareness of time passing.

[1]: http://www.scp-wiki.net/scp-2718 , for those not familiar with the format of the site, be sure to click the "► Play" on the bottom for the text I'm referring to. On the topic of SCP, the "End of Death" canon rather resembles your story, albeit moreso: http://www.scp-wiki.net/end-of-death-hub

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red75prime6y ago

It also doesn't necessarily entail remembering who you are. So I think it's not that horrible: you lose more and more of your memories and your capabilities of forming thoughts and intentions, until it's just generic consciousness aware of itself doing nothing and of (what's left from) input stimuli.

dhimes6y ago

So, in the limit it's not observably different from death? Then it's death.

jerfOP6y ago

It's all the things. QI is basically just an consciousness-centric view of the already-understood truth that in the quantum multiverse, everything that can possibly happen does. It just means that there is some way in which you may actually experience some aspect of that, because your future conscious experience excludes all the universes in which you are not conscious. You can draw a subset of future universes in which you are minimally conscious, in which you're just a wee bit more conscious than that, in which you're conscious enough to be aware of your plight indefinitely, in which as I say in another message you're healthy indefinitely. You're not causing anything to be or not to be, you're just carving various subsets of radically differing, but non-zero, size out of the near-infinity of the full quantum multiverse, which exist whether or not you choose to regard them.

So, you know, in a fraction of the universes in which you remain conscious that would require something like 1 over a number in arrow notation to describe, you'll be conscious enough to be perturbed. This is utterly, utterly dominated by the universes in which you're just sort of there. However, if you then choose to exclude those latter universes on the grounds that you consider that to be "dead", then that brings that tiny fraction back to the fore by virtue of eliminating everything else.

It's a lot of definition chopping and manipulating rather enormous exponentials in the probabilities. However, there is still an underlying truth there, if the multiverse is true. It's just more subtle than the casual human view of "survival" or a brief gloss of the argument might entail. You have to think in quantum terms about whether or not this spin goes that way or the other, not in human terms like whether or not the gun fires. The latter is made up of an incomprehensibly large number of the former sort of things, and as you start talking about the fringe cases the quantum events require staggeringly enormous exponential probabilities to describe anything even remotely human-visible.

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