This is a lie.
I’m little busy with work and such but yes I read many of the posters above.
*** Doctors are killing people doing complex surgery than bringing them back to life using freezing the brain. ***
I think the video is really much so misleading the public that they are not freezing people just cooling people down a bit. The head is not frozen. And blood is still going on in the body. The blood and cells are not frozen.
And it only short time.
For the lack of science people you think this is sorta of cryogenically freezing.
Other one of those popular science videos misleading the public.
Exactly -
Cooling the body slows down biological processes; metabolism runs much slower, so the body does not need anywhere near as much oxygen (or other consumables). The brain is especially dependant on the correct amount of oxygen, note in asphyxiation situations it is the brain that usually suffers the most damage.
Normally, there are only two scenarios that would allow the body’s core (inner) temperature to drop quite low - being outdoors, usually in a blizzard, or drowning in cold water. In the former, obviously surface frostbite is an obvious problem - freezing (crystal damage) on the surface cells probably makes survival of the whole body more difficult; while in the latter, lack of oxygen is a problem.
At least in surgery, the doctors can cool the whole body while ensuring that nothing freezes (crystalizes) and an adequate oxygen supply continues. The advantage is that during cold surgery, the blood flow can be less and/or interrupted longer with less risk of causing damage.
It’s more like hibernation (extreme slowing of body functions in mammals) than cryogenics or freezing.
(As I understand it, revival is tricky too; the body could go into shock if some organs are heated too much before others. Humans, unlike hibernators, are not designed for this sort of stress).
As I’ve understood the problem from reading over the years - you can “flash freeze” some materials so that the water in them cools so fast it does not form crystals. The problem with cryogenics is how to freeze a large mass quickly (and thaw safely). You can freeze sperm and eggs. You can even freeze small fish, from what I’ve read. however, the problem is speed of heat conduction - you can cook a roast at 450 for a while and a few inches in, the interior will still be medium-rare. The same problem applies in reverse - even immersed in liquid nitrogen or helium, the interior of a brain or body will not cool fast enough and crystals will form.
(Not to mention the thawing problem - the whole has to be thawed to something close to room temperature without cooking the body, and everything has to be thawed and ready for the heart to start, the lungs to acquire oxygen, etc. - in a very short time. The best solution would be to control thaw to the surgical temperature just above freezing so you have much longer to get everything ready for life).
As for scanning and “copying” anything organic- it’s so far into the realm of science fiction, it’s not even on the radar. Heck, there will be a massive market for 3D-printed steaks, lobsters, and truffles before we even worry about reproducing live organisms. We have a very very long way to go in the biological sciences, let alone the physics of “scanning”.