Cryonics

Cryonics is the very low temperature freezing of a deceased person's body in the hope that in the future the technology will be invented both to revive them and cure all the illness or injury that killed them? Could it ever work? And what are the implications if it can, or cannot?
See here for background: https://hpanwo-voice.blogspot.com/2016/11/teenage-cryonicist.html.
And: http://hpanwo.blogspot.com/2007/08/life-extension-movement.html.
And: https://hpanwo.blogspot.com/2021/08/skeptics-portal.html.