Quantum immortality sounds exactly like the mythical hell
And is about as real.
The idea of quantum suicide is that we should act as if we won’t die, because there will be some future “us”es who don’t die. But this argument is wrong because the person who makes the decisions isn’t one of those future people—it’s the present person, who is completely entitled to not want to die.
We can demonstrate that this fails even classically. Imagine a pill that, when taken, causes the taker to believe that taking the pill is a good idea. A rationalization drug. And suppose that this pill also causes violent diarrhea. Is taking this pill a good idea? The person who takes the pill would certainly say so! If one is to avoid similar entirely-classical silliness, one has to invalidate appeals to what future people will think as a reasonable way of deciding, and instead just make decisions according to the present person’s preferences.
One response I’ve seen to this was “dying is not like a pill that modifies your judgement”—the trouble with this is that as modifying the output of your brain goes, putting a big hole through it is a highly effective example. Another possible response is that the present person is not “rationally allowed” to not want to die, for some philosophical reason. But that position is inconsistent with all our shiny theoretical models of what “rational choice” means, not to mention human behavior.
Ultimately, understanding quantum suicide boils down to understanding the difference between future utility and expected utility.
Or you could simply consider all of those versions of you with holes in their brains sufficiently different from yourself as to be no longer considered “you”, making it so that you only care about the “you” who lives.
The above seems to me like a fairly defensible position. After all, as modifying the output of your brain goes, putting a big hole through it is a highly effective example, as you yourself noted.
It seems to me as if you aren’t arguing that the phenomenon to which we give the name “quantum immortality” doesn’t exist, but rather that it is undesirable to the point such that it is clear we have misnamed it. In which case, I would suggest that what we really need to ask ourselves is why we don’t want to die, and whether or not this aversive impulse would or would not apply to the chain of events which we describe as “quantum immortality.”
Well, the historical reason for us not wanting to jump off a cliff is that you don’t have many offspring (or amplitude of having offspring) if you go around jumping off cliffs. So that’s a neat anthropic demonstration that we come from a high-amplitude world.
I believe that I’ve misphrased my question. The question I should have asked is: what makes death undesirable to us as we are now, regardless of why (causally, historically) we have this preference, and does this phenomenon of being aware of only those branches which we can observe qualify as undesirable or not?
You may as well ask why I don’t like being hit on the head with a baseball bat.
I note that you’re using the word “undesirable” as a property of dying, or of the anthropic principle, rather than a fact about human preferences. Not sure if this is linguistic convenience or the mind projection fallacy.
But there is a question to dissect, even in this most basic of preferences. For example, I suspect that a large portion of your dislike for the prospect of being hit in the head with a baseball bat is the pain. Your objection, I assume, is not to the fact that wood (or aluminum, or whatever) will be touching your head, or to the proximity of an artificial object to your brain.
There is an aspect of the experience—being hit in the head with a baseball bat—which makes it undesirable where similar experiences are not. For example, I have far fewer objections to being hit in the head by an inflatable baseball bat, particularly if I am forewarned and the situation is appropriate.
Similarly, I would guess that there are particular parts of the experience of dying which persons like us would find undesirable (I clarify to distinguish rationalists from persons who may attach more superstition to death; we do not fear, for example, having our hearts weighed against a feather by the Egyptian deity Osiris) more than others.
In this case, I find it valuable to clarify: do we wish to avoid the experience of dying (which occurs with increasingly high probability in one’s lifetime, even assuming quantum immortality), the limitations on the amount of fun we can have in a finite lifespan, or some combination of these and other properties of dying?
And yes, I did attach the adjective “undesirable” to death as a matter of linguistic convention. Thank you for pointing that out.
And is about as real.
The idea of quantum suicide is that we should act as if we won’t die, because there will be some future “us”es who don’t die. But this argument is wrong because the person who makes the decisions isn’t one of those future people—it’s the present person, who is completely entitled to not want to die.
We can demonstrate that this fails even classically. Imagine a pill that, when taken, causes the taker to believe that taking the pill is a good idea. A rationalization drug. And suppose that this pill also causes violent diarrhea. Is taking this pill a good idea? The person who takes the pill would certainly say so! If one is to avoid similar entirely-classical silliness, one has to invalidate appeals to what future people will think as a reasonable way of deciding, and instead just make decisions according to the present person’s preferences.
One response I’ve seen to this was “dying is not like a pill that modifies your judgement”—the trouble with this is that as modifying the output of your brain goes, putting a big hole through it is a highly effective example. Another possible response is that the present person is not “rationally allowed” to not want to die, for some philosophical reason. But that position is inconsistent with all our shiny theoretical models of what “rational choice” means, not to mention human behavior.
Ultimately, understanding quantum suicide boils down to understanding the difference between future utility and expected utility.
Or you could simply consider all of those versions of you with holes in their brains sufficiently different from yourself as to be no longer considered “you”, making it so that you only care about the “you” who lives.
The above seems to me like a fairly defensible position. After all, as modifying the output of your brain goes, putting a big hole through it is a highly effective example, as you yourself noted.
It seems to me as if you aren’t arguing that the phenomenon to which we give the name “quantum immortality” doesn’t exist, but rather that it is undesirable to the point such that it is clear we have misnamed it. In which case, I would suggest that what we really need to ask ourselves is why we don’t want to die, and whether or not this aversive impulse would or would not apply to the chain of events which we describe as “quantum immortality.”
I don’t have an answer to either question.
Well, the historical reason for us not wanting to jump off a cliff is that you don’t have many offspring (or amplitude of having offspring) if you go around jumping off cliffs. So that’s a neat anthropic demonstration that we come from a high-amplitude world.
I believe that I’ve misphrased my question. The question I should have asked is: what makes death undesirable to us as we are now, regardless of why (causally, historically) we have this preference, and does this phenomenon of being aware of only those branches which we can observe qualify as undesirable or not?
You may as well ask why I don’t like being hit on the head with a baseball bat.
I note that you’re using the word “undesirable” as a property of dying, or of the anthropic principle, rather than a fact about human preferences. Not sure if this is linguistic convenience or the mind projection fallacy.
But there is a question to dissect, even in this most basic of preferences. For example, I suspect that a large portion of your dislike for the prospect of being hit in the head with a baseball bat is the pain. Your objection, I assume, is not to the fact that wood (or aluminum, or whatever) will be touching your head, or to the proximity of an artificial object to your brain.
There is an aspect of the experience—being hit in the head with a baseball bat—which makes it undesirable where similar experiences are not. For example, I have far fewer objections to being hit in the head by an inflatable baseball bat, particularly if I am forewarned and the situation is appropriate.
Similarly, I would guess that there are particular parts of the experience of dying which persons like us would find undesirable (I clarify to distinguish rationalists from persons who may attach more superstition to death; we do not fear, for example, having our hearts weighed against a feather by the Egyptian deity Osiris) more than others.
In this case, I find it valuable to clarify: do we wish to avoid the experience of dying (which occurs with increasingly high probability in one’s lifetime, even assuming quantum immortality), the limitations on the amount of fun we can have in a finite lifespan, or some combination of these and other properties of dying?
And yes, I did attach the adjective “undesirable” to death as a matter of linguistic convention. Thank you for pointing that out.