it seems like if there's any way to go more than six hours, period, it's such a well kept secret that no one thinks its possible
Yet Dumbledore says that someone erased Atlantis from time, and I'm guessing Atlantis existed for more than six hours. (Also, it was erased from time in such a way that people still know about it).
We know that earlier wizards were stronger, yet the book says "time turners can't go back more than six hours" multiple times, so it seems an important fact and widely believed by the characters. We know that strong Dumbledore can't do it, nor can efficient Quirrellmort (or he wouldn't suggest to Harry the plot with Bulstrode), and that time travel can be blocked long-term by the Wizards who created Azkaban. I think it will be a matter of partial-transfiguration style understanding for Harry to find some kind of loophole.
Yet Dumbledore says that someone erased Atlantis from time, and I'm guessing Atlantis existed for more than six hours. (Also, it was erased from time in such a way that people still know about it).
I think Atlantis serves as a cautionary tale for what happens when you TRY to go back more than six hours.
- This thread has run its course. You will find newer threads in the discussion section.
Another discussion thread - the fourth - has reached the (arbitrary?) 500 comments threshold, so it's time for a new thread for Eliezer Yudkowsky's widely-praised Harry Potter fanfic.
Most of the paratext and fan-made resources are listed on Mr. LessWrong's author page. There is also AdeleneDawner's collection of most of the previously-published Author's Notes.
Older threads: one, two, three, four. By tag.
Newer threads are in the Discussion section, starting from Part 6.
Spoiler policy as suggested by Unnamed and approved by Eliezer, me, and at least three other upmodders:
It would also be quite sensible and welcome to continue the practice of declaring at the top of your post which chapters you are about to discuss, especially for newly-published ones, so that people who haven't yet seen them can stop reading in time.