QuicklyStarfish comments on Harry Potter and the Methods of Rationality discussion thread, part 13, chapter 81 - Less Wrong

6 Post author: bogdanb 27 March 2012 06:07PM

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Comment author: QuicklyStarfish 30 March 2012 06:48:17AM *  19 points [-]

That's an interesting possibility, but I favour the interpretation that this is the source of dementors:

Even so, the most terrible ritual known to me demands only a rope which has hanged a man and a sword which has slain a woman; and that for a ritual which promised to summon Death itself - though what is truly meant by that I do not know and do not care to discover, since it was also said that the counterspell to dismiss Death had been lost.
- Quirrell, Chapter 74

It fits very nicely. Dementors (Death) were unkillable (undismissable) because the "true" patronus charm (counterspell) had been lost.

Comment author: MinibearRex 31 March 2012 06:47:39AM 3 points [-]

Canon makes reference to fog being produced by dementors breeding, which doesn't sound like a light ritual or a respawning option. I don't know if Yudkowsky has kept this part.