Assuming it's not different from canon, they do so in book six. It's not really clear how they reproduce, but they were spreading all over England, reproducing and spreading mist and despair.
Presumably they disappear somehow (old age?) as well, since Harry isn't asking them questions from the days of Atlantis. We know that they existed at least as far back as the founders' days, and he's also not pumping them for info about magic from Lord Foul / the Founders. I still operate on the idea that things are unchanged from canon unless explicitly mentioned. Plus I can't imagine hundreds of idiots summoning dementors and nobody figuring out that they're the manifestation of death.
Presumably they disappear somehow (old age?) as well,
Do I really need to quote the bit where Quirrell talks about how they are "undying"? I rather highly doubt that the shadows of Death die of old age.
since Harry isn't asking them questions from the days of Atlantis. We know that they existed at least as far back as the founders' days, and he's also not pumping them for info about magic from
Harry can't hear them speak. He doesn't even think they have anything like minds or memories, either.
...Plus I can't imagine hundreds of idiots summonin
The new discussion thread (part 15) is here.
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 82. The previous thread passed 1000 comments as of the time of this writing, and so has long passed 500. Comment in the 13th thread until you read chapter 82.
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.
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