Rick,
I don't think you are serious when you suggest that we FREEZE records and bills and tax returns etc. in liquid nitrogen.
But let me just rebut the suggestion systematically anyway:
1. Many things get brittle when frozen in liquid nitrogen. e.g. frozen rubber tires when hit by a hammer turn into pieces like a broken glass.
2. Liquid nitrogen is a fluid, and might possibly
dissolve or damage things it doesn't freeze. Things that soak up liquid nitrogen could possibly be damaged when the liquid nitrogen later evaporates/turns into gas upon reheating.
3. It is more expensive to keep something in liquid nitrogen than to just store it in a dry and cool place.
4. And I doubt that receipts and tax returns etc. is what that it is the most important to preserve when it comes to verify that a person has been brought back as itself.
5. Furthermore when it comes to recreating or verifying the correct reconstruction of a human memory
I think we will have to depend upon computers,
not just to guide nanorobots,
but even for conventional teaching of a clone or revived cryo patient and not just for stroke victims.
There is a lot of information to gather and store,
and in the future still more of this will be available electronically, anyway.
6. As to safety of records, why not do as the big companies: Store backups on several computers in different countries? And store these in a self correcting and redundant way, e.g. repeatedly on several hard disks, so that if any one disk crashes, its content is recreated from the other disks?
7. Maybe sometime in the future it might be possible to connect a computer directly to a brain, so to just transfer information from brain to computer and vice versa.
8. dewars are expensive to buy and expensive to keep cold. If anyone has money to burn, I guess they can pay to fill up a lot of expensive dewars with their bills and receipts, but I wouldn't recommend it.
Paper records take up a lot of space,
and to maintain a dewar space one already has to set aside more money than most people have.
9. There is also the issue of large scale cryonics here. Miniatyrization by storing information electronically is the solution when it comes to storing information on thousands if not millions of people.
10. Preserving libraries and treasures is expensive enough for the rich, and might easily be robbed.
11. It might be of value to complete or upgrade records, after a person is frozen and that is not as easily done if the records are implanted in the patient or stored in the dewar together with the patient.
12.People are sometimes frozen with clothes on.
So I do not rule out that some people can try to sneak in a book or pamphlet about themselves in a pocket.
13.Well, I guess it couldn't hurt to have an extended dogtag so to speak, so to link any patient to the right record stored elsewhere, but why not then just operate in a computer chip with the necessary information? It would have capacity for much more information and take up virtually no space.
14.For safety one could have both a dog tag, a computer chip and some paper summary and maybe even a tatoo, all linking the patient to records stored and backed up repeatedly elsewhere.