Ooooh. That may well be a challenge that behaves differently around people who were or weren't supposed to be there.
Perhaps solving the logic puzzle is sufficient to gain entry, and most students will either not think to flip the parchment over or get bored before they finish brewing the potion it describes. But Snape expects Voldemort to notice the lack of wards and decide to brew the potion, and accordingly has booby-trapped the potion in some manner that triggers upon its completion or after some time sufficient that he expects students to get bored first.
The duration may well also be significant for Time-Turning.
Two new short chapters! Since the next one is coming tomorrow and we know it'll be short, let's use one thread for both.
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 105 (and chapter 106, once it comes out tomorrow). EDIT: based on Alsadius' comment about thread creation for MOR chapters, let's also use this thread for chapter 107 (and future chapters until this nears 500 comments) unless someone objects to doing so. Given that this is the final arc we're talking about, thread titles should be updated to indicate chapters covered.
There is 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.)
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: