I've also heard that for soldiers, seeing one more death or injury can be the tipping point into PTSD.
Am I missing something, or does this follow trivially from PTSD being binary and the set of possible body counts being the natural numbers?
The thing is that PTSD is really not that binary, like many mental illnesses, it has a wide range of symptoms and severity levels. What Nancy is talking about is how one death can push one drastically over, skipping much of the middle range where it might be ambiguous if one had symptoms severe enough to be diagnoseable. (Disclaimer, while I've heard the same sort of things NancyLebovitz is talking about, I'm not aware of any studies actually supporting this.)
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 88-89. The previous thread has passed 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.
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: