Less radically and more accessibly, adding a bitter ingredient seems to work (n = 1). Caffeine powder is cheap and bitter, but there are probably better options.

That doesn't make any sense. Eliezer quite often tries to point out that things don't go down the way they do in stories, and it would be a ridiculously unlikely coincidence that whatever the time travel limit was, that happened to be the exact distance in light hours from earth to Pioneer on a certain date in the future. If the plaque is horcruxed, it happened WAY before Harry was even born, so it's not like Quirrel could've even arranged it to coincide with the end of Harry's first year at Hogwarts intentionally for drama.

In what sense does it not pan out? Why would Quirrel's last day of class need to align with the last day he will be able to maintain his body on earth?

I was re-listening to the podcast of Chapter 20 (Bayes's Theorem) when I was struck by an idea. It builds on another idea I heard in this same forum. The original idea was that Quirrel had Horcruxed the Pioneer plaque and that, due to the nature of magic, his Horcrux passing beyond a distance of 6 light hours would lead to his death due to a limitation on magic's ability to affect things more than 6 hours into the past - which would be needed for faster than light communications.

Having now re-listened to that chapter, I've picked up some new clues. Harry had made the suggestion that it might be possible to add an entire human mind's worth of information to the Pioneer plaque by creating a portrait or arranging for a terminally ill person's ghost to be attached to it before launch. Quirrel of course denied that he had done anything like that through a bit of misdirection. This leads many to speculate that he had Horcruxed the probe, downloading a copy of himself into it for posterity.

I had the idea that perhaps he downloaded himself into the probe and then started to operate his body by remote control. When his body goes limp, it's because he's not at the 'controls' at that moment. Once the probe passes beyond 6 light hours, it will become impossible for him to continue to tele-operate his body any longer and he will be trapped on the probe for the rest of its flight time. I believe he is revealing an important clue in the following paragraph:

"Sometimes," Professor Quirrell said in a voice so quiet it almost wasn't there, "when this flawed world seems unusually hateful, I wonder whether there might be some other place, far away, where I should have been. I cannot seem to imagine what that place might be, and if I can't even imagine it then how can I believe it exists? And yet the universe is so very, very wide, and perhaps it might exist anyway? But the stars are so very, very far away. It would take a long, long time to get there, even if I knew the way. And I wonder what I would dream about, if I slept for a long, long time..."

Is he contemplating the eons that await him while the probe moves on to 'some other place'? Does he plan to put his mind on hold, to sleep, for most of that flight time?

Something is definitely funny with Goyle. He's able to do martial arts, is extremely good with a broomstick, and doesn't trust Draco when Draco lies to him. At first, my interpretation was just that Goyle was much more capable in this version. That's still a possibility, but I feel like if that were the case then maybe Crabbe also would have been made more capable. I feel as though Goyle will do something important soon, definitely.

I even briefly entertained the possibility that Goyle was a Mary Sue, for about ten seconds, but that idea doesn't have anything to recommend it besides the humor of it.

The most frustrating part of that note of confusion lies in the magic of the world, I think. What is actually possible to do with magic? What do witches and wizards think is possible? What does Harry think is possible?

Let me illustrate by looking at the question that you brought up:

How could anyone possibly know what spells the dark lord cast, and what the effects were, if there were no survivors besides a baby?

Prior Incantato: If they got their hands on Voldemort's wand, then they could see that he cast the Killing Curse. This would be weak evidence indeed, but it is possible to see what he cast. They did not recover Voldemort's wand, but Harry doesn't know this. Canon and MoR founded. Harry has no idea of whether or not it is possible.

Legilimency: A somewhat popular fan theory for canon, Dumbledore could have read baby Harry's mind right afterwards. Canon and MoR founded. Harry has no idea of whether or not it is possible.

Curse Scar: A lot of people make a huge deal out of the scar that Harry has. They seem to feel that it was created from surviving exposure to the Killing Curse, though how that would be known when he was the first ever is something of a mystery. Perhaps because it registers similarly to scars left behind by other Dark curses, at least in terms of being unhealable. See residue. Somewhat canon-founded. Harry has no idea of whether or not it is possible.

Divination/Scrying/Past-Viewing: It might be possible to remotely view the scene, to see what happened, from the past, in real time, or in the future. Divination is real, though it seems to be more cryptic than that, Scrying seems to be unknown, but Past-viewing is clearly not possible after what happened with Hermione, though Harry doesn’t know this yet. Partially founded. Harry has no idea of whether or not it is possible.

Wards: Clearly whatever wards they put up in addition to the Fidelius Charm (because in a more competent world, they shouldn't have had a single point of failure) did not keep Voldemort out, but that didn't mean that the monitoring aspects had to have died. It's possible that there's a magical video of the whole thing, or a record of what spells were cast where and when. Primarily speculative. Harry has no idea of whether or not it is possible.

Killing Curse residue: Perhaps one way that they could distinguish if the Killing Curse was involved in a death is by checking the bodies to see if there is a residue left over on the corpse. If Harry has the residue but is still alive, that would be strong evidence. Speculative. Harry has no idea of whether or not it is possible.

And this is just what I thought up in a few minutes. Harry could have multitudes of ideas about how magic works and what it could do, but until he learns something, he has no idea of what’s possible. How could the question be “how do they know?” when there are so many different possibilities of how they could know? We're not really much better, because though we have a leg up from canon, MoR has already changed some of the rules.

I like the new changes to chapter 7 (I'm not sure how long they've been up). The conversation between Harry and Draco flows better, makes more sense for the characters, and the force of the original text is still present.

Two thumbs up!

Harry Potter's spoon absentmindedly stirred his breakfast cereal; he hadn't taken many bites of it this morning, not that Hermione had seen.

Harry's spoon wasn't actually stirring his cereal of its own accord; Harry's mind was just so far away from the breakfast table that his hand was doing it on autopilot, so that the spoon might as well have been acting of its own accord. When it says "absentmindedly", it wasn't the spoon that was absentminded, but rather Harry himself.

I only just realized that Harry must have purchased that Spoon +4 in Diagon Alley, since he's not capable of wandless magic and we never hear of him using a wand when his spoon is stirring his cereal for him.

Interestingly, I also thought that the green goggles mentioned in the same sentence were a Wizard of Oz shoutout -- but they turned out to have an in-story use as well. When will we see bounce boots, knives +3, and forks +2?

I've always suspected that Petunia's paraphrases there of Lily are mostly true — that's a contributing factor to my believing that some level of apocalypse is in the story's future — but just guessing that Really Bad Stuff is going to happen seems a far cry from us "getting 'the plot' " from Chapter 1, or chapters 1 through 3.

Neither the remainder of Chapter 1 nor the whole of Chapter 2 seem to have any significant hints. In Chapter 3, here is what I can see that might have hidden meaning:

"I had the strangest feeling that I knew him..." Harry rubbed his forehead. "And that I shouldn't ought to shake his hand." Like meeting someone who had been a friend, once, before something went drastically wrong... that wasn't really it at all, but Harry couldn't find words.

Maybe we were supposed to get more out of this at the time? Perhaps we were supposed to infer that Quirrell or one of his alter egos had been an up-and-coming hero?

The Killing Curse is formed of pure hate, and strikes directly at the soul, severing it from the body. It cannot be blocked. The only defense is not to be there.

Maybe, contrary to my previous protestations, we are supposed to believe that Harry wasn't really hit with Avada Kedavra?

(And somewhere in the back of his mind was a small, small note of confusion, a sense of something wrong about that story; and it should have been a part of Harry's art to notice that tiny note, but he was distracted. For it is a sad rule that whenever you are most in need of your art as a rationalist, that is when you are most likely to forget it.)

I'd always chalked this up as being the revelation Harry has at the end of the Humanism arc: that Dark Lords don't usually go after infant children, and that there must be an important reason why Voldemort did. But maybe there's something more to it.

…Or, conversely, maybe we have already figured out the stuff Eliezer was referring to, we just didn't figure it out as early as he expected. Matheist, do you have a link to that quote? I couldn't find it by ⌘Fing Methods's TV Tropes pages.

(Does anyone else find it really weird to read "EY" as a reference to Eliezer? It always reads to me like a Spivak pronoun with faulty verb agreement.)