I think there are ordering constraints on the sequence of technological advances involved. One vision of how revival works goes like this: start with a destructive, high resolution scan of the body, then cure illness and death computationally, by processing the data from the scan. Finally use advanced nano-technology to print out a new, well body.
Although individual mammalian cells can be thawed, whole human bodies are not thawable. So the nano-technology has to be warm as well as macroscopic. Also a warm, half printed body is not viable, so printing has to be quick.
Well before the development of warm, fast, macroscopic nano-technology, society will have cryogenic, microscopic, slow nano-technology. Think about being able to print out a bacterium at 70K in a week, and a mammalian cell in a year. What could you do with that technology?
You could print human stem cells for rejuvenation therapies. You could print egg cells for creating designer babies. The first round of life extension is stem cells for existing people, and genetically engineered longer life spans for new borns. The second round of life extension provides those with a genetically engineered longer life span with stem cell based rejuvenation therapies. The third round of life extension involves co-designing the designer babies and the stem cell therapies to make the rejuvenation therapies integrate smoothly with the long-life-span bodies. Somewhere in all this intelligence gets enhanced to John von Neumann levels (or above).
Developing warm, fast, macroscopic nano-technology is a huge challenge. Let us accept Academian's invitation to assume it is developed eventually. That is not too big a leap, for the prior development of cryogenic, slow, microscope nano-technology was world changing. The huge challenge is faced by super-clever humans who live for tens of thousands of years. They do indeed develop the necessary technology and revive you.
Now what? Humans who live for tens of thousands of years have probably improved pet dogs and cats to live for thousands of years. They may even have uplifted them to higher levels of intelligence than 21st century humans. They will have an awkward relationship with the 21st century humans they have revived. From their perspective, 21st century humans are stupid and age rapidly, to a degree that is too uncongenial to be tolerated in companion animals. Being on the other end of this perspective will be heart-breaking.
Warning: people will be trying to be pessimistic here. Don't read this if you don't want to be reminded of scary outcomes.
Request: if you get an idea that you think might be too scary to post publicly even under the above warning, but you are willing to send it to me in a private message to aid in my personal decision-making, then please do :)
Motivation:
I like cryonics. According to my parents and grandmother, I started talking about building an AI to help with medical research to revive frozen dead people when I was about 10 years old, and my memory agrees. I began experimenting with freeing and unfreezing insects, and figured based on some positive results that it was physically possible to preserve life in a frozen state. Cool!
But now that I'm in middle of convincing some folks I know to sign up for cryonics, I want to do due-diligence on some of the vague, hard-to-verbalize aversions they have to doing it. This way, I can help them plan contingencies for / hedges against those aversions if possible, thereby making cryonics more viable for them, and maybe avoid accidentally persuading people do cryonics when it really isn't right for them (yes, I think that can actually happen).
There's already been a post on far negative outcomes, and another one on why cryonics maybe isn't worth it. But what I really want to do here is conduct an interactive survey to compute which disutilities should be taken most seriously when talking to a new person about cryonics, to avoid accidentally persuading them into making a wrong-for-them decision.
And for that, what I really want to ask is:
What's the most negative*plausible cryonics-works story that you know of?
Examples:
(1) A well-meaning but slightly-too-obsessed cryonics scientist wakes up some semblance of me in a semi-conscious virtual delirium for something like 1000 very unpleasant subjective years of tinkering to try recovering me. She eventually quits, and I never wake up again.
(2) A rich sadist finds it somehow legally or logistically easier to lay hands on the brains/minds of cryonics patients than of living people, and runs some virtual torture scenarios on me where I'm not allowed to die for thousands of subjective years or more.
I think on reflection I'd consider (1) to be around 10x and maybe 100x more likely than (2)*, but depending on your preferences, you might find (2) to be more than 100x worse than (1), enough to make it account for the biggest chunk of disutility that can be attributed to any particular simple story or story-feature where cryonics works.
[* I would have said (1) was definitely more than 100x more likely before so many of my female friends have, over the years, mentioned that they were subject to some pretty scary sexual violence at some point in their dating lives.]
(Note: There's a separate question of whether the outcome is positive enough to be worth the money, which I'd rather discuss in a different thread.)
How to participate:
Thanks for playing :)
PS I hope folks use these ideas to come up with ways to decrease the likelihood that cryonics leads to negative outcomes, and not to cause or experience premature fears that derail productive conversations. So, please don't share/post this in ways where you think it might have the latter effect, but rather, use it as a part of a sane and thorough evaluation of all the pros and cons that one should reasonably consider in deciding whether cryonics working is on-net a positive outcome.
ETA -- What not to post:
Some non-examples of what this survey should contain...