It's important to remember that we're talking 1991, rather than present day. While there are a number of older works featuring cryonics, they tend to include themes you probably don't want to expose a ten-year-old to (Heinlein's Door Into Summer) or are soft science fiction or outright fantasy (Star Wars, Captain America), or use a generic stasis instead of cryogenics (Aliens). Harder popular fiction versions like Futurama, Bujold's Mirror Dance, and Cowboy Bebop wouldn't come out for a few years.
There were older hard fiction pieces that mention it -- Niven, at least -- but it's fairly recent for the concept to be an automatic assumption for near-future or even far-future works. If Rationalist!Harry read and remembered everything, he'd have to be aware of it, but honestly he's got a bit too wide of a knowledge base to be reasonable as it is.
This is a new thread to discuss Eliezer Yudkowsky’s Harry Potter and the Methods of Rationality and anything related to it. This thread is intended for discussing chapter 98. The previous thread is at nearly 500 comments.
There is now a site dedicated to the story at hpmor.com, which is now the place to go to find the authors notes and all sorts of other goodies. AdeleneDawner has kept an archive of Author’s Notes. (This goes up to the notes for chapter 76, and is now not updating. The authors notes from chapter 77 onwards are on hpmor.com.)
The first 5 discussion threads are on the main page under the harry_potter tag. Threads 6 and on (including this one) are in the discussion section using its separate tag system.
Also: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26.
Spoiler Warning: this thread is full of spoilers. With few exceptions, spoilers for MOR and canon are fair game to post, without warning or rot13. More specifically: