it was the reason for the old tradition of the Noble families synchronizing the birth of their heirs, to put them in the same year of Hogwarts, if they could
This is a nice solution to "magical Britain is much too small for Hogwarts to be this big" and "why is everyone important in Harry's class?". Go cicadas!
It reads like a very forced solution - there would be significant gains to one noble house going against the tradition, so their heir could have several years of Hogwarts students rally behind them - and also kind of impossible to implement, given that we don't know much about their birth control methods, and the Noble Houses are unlikely to all marry at the same time etc.
That said, the HP universe which Eliezer took on as his setting is full of such bugs, and this is a reasonable patch.
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: