Frankly, I read Luminosity because of how much everyone raves about it here, and it didn't appeal to me at all. Put it down after a dozen or so chapters.
I think my biggest problem is that I'm not a fan of stories as pure vehicles for teaching. Teaching on the side is fine, but trying to embed large amounts of rationalist pedagogy in the middle of a story, to the point where it takes over, is frankly a good way to ruin a story. HPMOR manages to be good despite it, as far as I'm concerned, not because of it. But all Luminosity had was rationalist classroom teaching and Twilight - there's better venues for both(Sequences and landfills, respectively), and it has none of the insane humour or early plot that brought me into HPMOR.
The plot gets thicker further in. It does take a while to ramp up; if I didn't hate editing things I'd go compress the first half of Luminosity considerably to get it off the ground sooner. The didacticism falls away almost completely later on, which was mostly accidental on my part but you might find more pleasant.
Edit: New thread posted 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 86. The previous thread has long 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.
As a reminder, it’s often useful to start your comment by indicating which chapter you are commenting on.
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: