It may have something to do with the fact that the legitimate owner of the Hallow participated in making the map, but the whole map itself is very overpowered for a group of 4 students to create anyway. If it was possible to create such a map, why wouldn't the Hogwarts authority create it ? It's much more likely that the map was made by someone much more powerful, and only slightly altered by the marauders. Maybe they just added the fact that's usually blank and you've to swear you're up to not good to make it work ?
That's probably why its origin was changed in HPMoR (where, as opposed to in canon, it was originally part of the Hogwarts security system and possibly made by Salazar Slytherin).
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 90. The previous thread has passed 750 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.
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: