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Help: Is there a quick and dirty way to explain quantum immortality?
TikiB00

Your logic here makes no rational sense. Your saying things which can be proved to be false.

Firstly I accept your premise that some things have zero probability. The wave-function doesn't mean literally anything can happen

BUT

I strongly disagree with you when you start saying that simultaneously selecting for possible (but improbable things) makes them impossible because this makes no rational sense. Quantum events are independent of each other the fact that 1 radioactive atom decays doesn't mean that the next is more or less likely to (unless they int... (read more)

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The map of quantum (big world) immortality
TikiB-30

I actually read that paper and he actually says that we should reject BB dominated univereses on the basis that they don't allow physicists to make predicitions, man that guy is an idiot

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The map of quantum (big world) immortality
TikiB-10

Yea Carroll has rather the obsession with Boltzmanns brains. Both sides have vaild arguments if we were living in a boltzmann brain dominated universe random observations would be more likely but no amount of measuring would prove that you weren't a boltzmann brain.

Of course Carroll repeatedly tries to use this to argue agaist a universe dominated by boltzmann brains, but it does no such thing all it means is that he WANTS the universe not to be dominated by boltzmann brains because if it is then his life work was a waste of time :P

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-3TikiB
I actually read that paper and he actually says that we should reject BB dominated univereses on the basis that they don't allow physicists to make predicitions, man that guy is an idiot
The map of quantum (big world) immortality
TikiB00

Lubos Motl already discussed this in this blog. if we were Boltzmann brains we wouldn't expect to see any consistency in physical laws, moments would happen at random. Of course there would be a a very low measure subset of boltmann brains that perceived there to be our physical laws, but its far more likely that the physical laws exist.

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0turchin
There were recent article which showed flaw in this reasoning https://arxiv.org/abs/1702.00850 and I agree with the flaw: BB can't make coherent opinions about randomness of its environment, so the fact that we think that it is not random doesn't prove that it is not random. But if we are BB - we are in fact some consequent lines of BBs, which could be called similar observer moments. Such similarity exclude randomens, but it is a property of a line. Simplified example: imagine there is infinitely many random numbers. In these numbers exists a line goverened by some rule, like 1,10,100,1000,10 000 etc. Such line will always have next number for it inside the pile of numbers (this is so called Dust theory in nutshell). If each number is decribing observer-moment, in all BBs there will be sequences of observer-moments which corresponding to some rule. More over, for any crazy BB there will be a line which explains it. As a result we get the world almost similar to normal. The idea needs longer explanation so I hope on understanding here and I am not trying to prove anything
The map of quantum (big world) immortality
TikiB00

Of course its entirely possible to exist as a boltzmann brain and if we do in fact exist for eternity as MWI seems to imply then some of that time will be as a boltzmann brain.

The point is that Boltzmann brains have low measure, which is why we aren't one now.

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0turchin
If nothing except BBs exists, their measure doesn't matter. I don't say I believe in it, but it is interesting theory to explore. It is similar to Dust theory. I hope to write an article about it one day when I finish other articles.
The map of quantum (big world) immortality
TikiB10

An observer moment is not an average of all times at all but is instead (likely)a high measure future moment relative to the previous moment. Consciousness is experienced as a flow because our brain compares the current experience to the previous one making us percieve that one followed the other.

The place where measure really comes in is the first moment, we exist on this planet because our first experience was on this planet. Because the first moment can be at any time (it doesn't have a previous moment) it will likely be in a location with a high measur... (read more)

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0turchin
BTW if we will be able to explain consiosness as a stream of similar observer moments, we don't need reality at all. Only Boltzmann brains existence will be enough. Our lives will be just lines in the space of all possible observer moments.
The map of quantum (big world) immortality
TikiB-10

Dr Jacques Mallah PhD has arrogantly been asserting for the last few years that quantum immortality is obviously wrong. This is a rebuttal to his argument, his primary argument can be found on https://arxiv.org/: "Many-Worlds Interpretations Can Not Imply ‘Quantum Immortality’".

For the record I don't necessarily believe quantum immortality is right or wrong but I think it could be.

His primary arguments come down to the decrease of 'measure' of consciousness after a likely death event like proposed in quantum suicide. And the fact that we find ou... (read more)

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0turchin
I agree with your critics of this article. Moreover, his first objection is contradicting the second. Imagine the following model of QM. We have 1024 copy of Harry Potter book. Each day half of copies is destroyed. From the point of Harry it doesn't matter until at least one book exist. Number of books doesn't affect plot of the book. the same way number my copies (measure) doesn't affect my consiousness. But if we ask there is the medium copy of the book, we will see that it is in the beggining of the pyramid, somewhere in the first or second day when there was 1024 or 512 books. So if HP will ask where he is, he more probably will find himself in beggining of the story, not in the middle of eternity. This is where idea of measure starts to work and it exactly explain why QI being will more probably find itself in its early time. There is other possible explanation why I am not so old, one is that I am computer game of high level avatar, who is very old by choose to forget his age for each round of the game - but here we stack QI with simulation argument. Another explanation is that asking about my age is not random event, as I already surprised why I am so early.