> This is no-go unless the problem of ice crystal expansion is solved.
> By the time brain cells are really frozen they are dead.
> You also have the problem that even if that can be worked around a person so frozen, where I guess now it is just the head with the idea of cloning bodies etc, has to be kept in some sort of endowment. Within a century of so that will burn off like the morning fog.
> Now, for those running ALCOR or related companies this might be for now a cash cow. If enough people can be duped into this it might provide serious profits.
> This is no-go unless the problem of ice crystal expansion is solved.True, but that problem doesn't need to be solved right now, it can be left to future technology to figure out. The key question right now is will my brain enter a turbulent state when it is frozen or will the fluid flow be laminar? If it's turbulent then small changes in initial conditions will result in large changes in outcome and I'm dead meat, even nanotechnology couldn't put Humpty Dumpty back together again. But if the freezing process is laminar then figuring out what things were like before they were frozen would be pretty straightforward.
Fluid flow stops being smoothly Laminar and starts to become chaotically turbulent when a system has a Reynolds number between 2300 and 4000, although you might get some non chaotic vortices if it is bigger than 30. You can find the approximate Reynolds number by using the formula LDV/N. L is the characteristic size we're interested in, we're interested in cells so L is about 10^-6 meters. D is the density of water, 10^3 kilograms/cubic meter. V is the velocity of the flow, during freezing it's probably less than 10^-3 meters per second but let's be conservative, I'll give you 3 orders of magnitude and call V 1 meter per second. N is the viscosity of water, 0.001 newton-second/meter^2, If you plug these numbers into the formula you get a Reynolds number of about 1. And 1 is a lot less than 2300 so it looks like any mixing caused by freezing would probably be laminar not turbulent, so you can still deduce the position where things are supposed to be.
Actually to my mind the most serious obstacles to the success of my program are not scientific at all, they are these:
1) Will my brain really be frozen soon after my death?
2) Will my brain remain frozen until the age of nanotechnology?
3) When it becomes possible to retrieve the information in my frozen brain will anybody think I'm worth the trouble to actually do it?
Concerning that last one, I think it will either be impossible to revive me or cheap and easy to do , the time when it will be possible but expensive will be very short. I'm willing to concede that my value to the Jupiter Brain that will be running things then will be almost zero, but my (perhaps hopelessly optimistic) hope is that it is not precisely zero. Anyway, given a choice between no chance and a slim chance I'll pick a slim chance every time.
> Or seeing that it's expensive to revive you, the Jupiter Brain decrees this shall be repaid by putting your head on a laborbot mining diamonds in Africa for the next 100yrs. And laborbots don't have to be very smart, so it's ok that your revived IQ is in the 60's.
> The idea of body transplants and immortality through various means is at best on hold.
> Also the problems coming at us that may well put a kibosh on the whole human enterprise
>To be honest I smell a scam with this.
> The insight into an historical analogue with mummification is worth noting..
> In order to really make this work you need Maxwell's demon.
> for N = 10^10 neural connections there are some N! possible combinations.
> It is not impossible in principle, but things like this are not likely to come very soon.
On Mon, Jul 27, 2020 at 7:41 AM Lawrence Crowell <goldenfield...@gmail.com> wrote:> In order to really make this work you need Maxwell's demon.No, to make this work you need Nanotechnology. Maxwell's Demon violates the second law of thermodynamics. Nanotechnology does not.
> reconstructing a living organism molecular by molecule is a tough call.
> I see this alongside a number of other things that are not likely, such as the space elevator or colonizing other star systems.
> This is something that is not likely. What would be the point of this?
> The purpose of technology is to alleviate drudgery, to transport, to learn things about the world, or to increase information that is accessible to us humans.
> We don't want information processors that are so advanced they can't relate anything to us.
> We may become as the BORG on Star Trek NG. If things go wrong we would be like the disconnected BORG people stumbling around.
> These science fiction schemes, particularly the idea of Kadeshov or Kardasian etc civilization levels I = planets, II= stellar systems, III = galaxy, IV = cosmos and V the multiverse is just an idle fantasy
On Tue, Jul 28, 2020 at 7:58 PM Lawrence Crowell <goldenfield...@gmail.com> wrote:\
> This is something that is not likely. What would be the point of this?
That's like asking what's the point of life. I prefer existence over oblivion because that's the way my mind is wired. And my brain is wired that way because of inheritance; if one of my ancestors didn't prefer existence over nonexistence then he or she wouldn't be an ancestor. And an AI that didn't prefer existence over oblivion wouldn't be around for very long.
> The purpose of technology is to alleviate drudgery, to transport, to learn things about the world, or to increase information that is accessible to us humans.
There is no way you could outsmart something that is smarter than you are, so we won't be able to order it around, so humans will have their agenda and a Jupiter Brain will have its own, and those two agendas may or may not be compatible; In fact I'd say if it turns out that cryonics doesn't work that would be my best guess as to why it was unsuccessful. So even if I embrace cryonics I may still face oblivion, but if I don't embrace cryonics I will certainly face oblivion. I think the logical choice is obvious.
> It's not obvious because there are things worse than oblivion.
>> Have you found an error in John Von Neumann's work that proves his probe won't work?
> The main point I am making is that lots of future predictions do not happen.
> The big wheel in space, Luna city and piloted missions to Mars and Jupiter have simply not happened.
> One thing that has happened is the idea science as the basis for explanation for the universe has in the minds of some people also come to replace religion.
> In the case of N2 freezing this involves immortality, or at least unbounded lifespan that avoids mortality.
On Wed, Jul 29, 2020 at 6:56 PM Lawrence Crowell <goldenfield...@gmail.com> wrote:>> Have you found an error in John Von Neumann's work that proves his probe won't work?> The main point I am making is that lots of future predictions do not happen.Not happened YET, but there is plenty of time. Just 200 years ago nobody knew what electricity was and a wood fired steam engine was high tech, and 10,000 years ago a sharp flint rock was high-tech, and it will be a billion years or so before the sun gets too hot for life to exist on Earth. Liquid nitrogen gives you time.
> The big wheel in space, Luna city and piloted missions to Mars and Jupiter have simply not happened.True they have not happened, but not because they violate some law of physics or even because current technology is not advanced enough to do so; they have not been built because nobody could find any Scientific, economic, or military reason to do so, and it's entirely possible nobody ever will. However I'm quite confident nobody will ever run out of reasons to stop pursuing immortality or in making sure your AI is smarter than the other guy's AI.
> One thing that has happened is the idea science as the basis for explanation for the universe has in the minds of some people also come to replace religion.Yes certainly, but you almost make that sound like a bad thing. Religion sucks, Science doesn't because religion (and magic) doesn't work, but Science does.> In the case of N2 freezing this involves immortality, or at least unbounded lifespan that avoids mortality.Yes.John K Clark
> the real issue with human survival is over the next century or so.
> Homo sapiens will not exist into geological time spans of the future.
> I did not comment on the von Neumann probes. The idea is sort of interesting and it is a cyber-space-based idea analogous to biology.
> So far self-replicating algorithms, search engines and viruses as examples, have only worked in a virtual sense. I do not know how realistic this is with micro-probes in the solar system. Maybe they would drift around dormant for along time before landing, presumably at low velocity, into an asteroid.
> If people shift their hopes and fears associated with religion to science, then we can expect policies and economics to shift accordingly.
> I am not sure an aim of science is either to disprove religion,