Almost certainly?
It's suggestive, sure, that he showed up from a long disappearance at about the same time as the "First Wizarding War" began. But the year could just be the one he returned at for some other reason, like, say, his Muggle Albanian wife dying.
In the latter case, why 1970? Because, like the original coincidental 1926 birth year, Eliezer was trying to make people go, "'Oh no, is she about to identify Voldemort?' . . . to be contradicted soon after by the Gaunts not exactly being on the Wizengamot or having a patroness grandmother."
Anyway, if you really think it's "almost certain", I'd like to arrange a bet on that. Say, my $5 against your $100?
The author has suggested we pay attention to the Conservation of Detail. With that in mind, the involvement of Albania is enough for almost certainty.
The next discussion thread is 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 84. The previous thread has passed 500 comments. Comment in the 14th thread until you read chapter 84.
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.
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: