Re: even if the chance of cryonics working is only 1%
"I doubt there's a legal definition of death other than "has been declared dead by a doctor". Even if there was a legal definition, if someone recovers and is walking around talking then it doesn't really matter what the law said does it?"
Then why is a person who is Brain-Dead (though still having a beating heart, etc.) considered legally dead? There must be some medical evidence to support that once a brain stops functioning it's past the Point of No Return in order for the legal declaration to have standing.