I’m not saying it is impossible, and I firmly believe that the recording of personality will be feasible some day. I don’t buy that we can do it today, at least not without damaging enough of the brain so that the person who wakes up won’t be brain-damaged enough to be someone different.
But the real problem is who would want all these corpsicles? Sure the future would wake up Walt Disney, but the average Joe. If they had this capability 400 - 500 years ago, we’d revive Galileo, Shakespeare and Leonardo, but not hundreds of third rate dukes. The only possible reason would be some weird fertility crisis, but the technology which could repair the damage from freezing could probably fix any fertility problems also.
Not to mention who would support all these revived people, who wouldn’t be able to do any sort of skilled labor. Which reminds me of a joke:
A man who was frozen wakes up in the future. He’s happy to be alive, and quite confident, since he carefully established a safe investment account before he went under.
“Is my money safe?” he asks.
“Definitely,” comes the answer. “You have 100 million dollars.”
He’s ecstatic. He is not only alive, but rich. Everything works by credit card, so he takes his card and leaves the hospital. He is hungry, so, seeing a number for a restaurant in an ad in the hospital, he decides to make reservations, and goes to a payphone on the corner. <it’s an old joke.>
He lifts up the receiver and hears a recorded voice say
“Deposit 3 million dollars for the first three minutes, please.”