106

The Interdict is an added plot device (though something like it must surely exist elsewhere in the vast reaches of already-written fantasy). I don't regard my own answers as canon when they haven't been recorded in the text itself, but Opinion of God is that the Interdict of Merlin applies to magical secrets that can directly or indirectly lead to wide-...


41

The note at the top of HPMOR Chapter 7 is probably the source of these comments: Whoa. A spokesman for Rowling's literary agent said that Rowling is okay with the existence of fanfiction as long as no one charges for it and everyone's clear that the original copyrights belong to her? That's really cool of her. So thank you, JKR, and thine is the ...


31

Chapter 23 discusses the genetic situation as a method of discovering why magic appears to be getting less powerful. In later chapters he concludes that the simplistic genetic marker is used as a method for whatever causes magic to work to recognize a person as capable of being answered. It is as if there is a computer that actually performs the magic when ...


27

Rowling is on record as approving of HP-based fan works in general [BBC interview], but that does not mean she approves of HPMOR specifically. I think there are strong circumstantial reasons to believe that she has not and will not read HPMOR, and would not comment on it if she had. The statement Rowling's spokespeople made in the above-linked article — ...


25

JKR approves of fan-fiction. The spokesman for the Christopher Little literary agency said: "JK Rowling's reaction is that she is very flattered by the fact there is such great interest in her Harry Potter series and that people take the time to write their own stories."- Rowling backs Potter fan fiction - BBC News It's said that she does have ...


25

If you assume that Harry is correct, then a Wizard/Squib cross could have either Wizard or Squib offspring, at 50% each; you don't need a Wizard/Muggle cross to get Squibs. However, two Wizards could not produce anything other than Wizards, as you point out. There's a reason that I emphasized the initial phrase in this answer, however - and if you consider ...


23

The answer can be found on page 602, when Harry is talking to Draco. “So what did you wish the first time?” said Draco. [...] “It wasn’t really all that interesting,” Harry said with obviously artificial lightness. “Just, I wish Professor Quirrell would teach Battle Magic again next year.” Quirrel refuses this wish because of the curse on the ...


21

Voldemort's ultimate ambition was little more than to be less bored. The thing Voldemort fears most is death, so he sets out to avoid that possibility as his first priority. He quite handily deals with that little inconvenience through his use of Horcruxes, then sets out to figure out what he wants to do with his eternal life after that. He spends some time ...


20

Although I've not read Methods of Rationality, I can say with confidence that nothing like what is described appears in Rowling's original writings. I hesitate to post an answer without offering supporting evidence, but it's hard to prove a negative; the best I can do is: I've read the books many times, and have searched Pottermore, Accio-quote (which ...


18

No, this isn’t entirely accurate. According to this theory, the child of a witch and a wizard is always a witch or wizard themselves. There are at least Squibs in canon who were born to magical parents: Angus Buchanan, the Scottish rugby player Marius Black, part of the notoriously blood-supremacist Black family See my answer to Are there any non-magical ...


18

TL&DR version: They had just met, but Harry's initial fun, coupled with Draco's sense of humor had resulted in them becoming tentative friends; they were playing together. Full Version It's not as complicated as it seems. Harry is getting tired of the response he keeps getting.. "Oh, my god! Is it REALLY Harry Potter!" and the like. He decides he'...


16

Your presumptions are correct. Dumbledore put on a show of murdering Narcissa. At some point during the Wizarding War, the Death Eaters began going after families. Dumbledore's brother was held hostage and tortured to death under the Cruciatus Curse. In response, Dumbledore "killed" Narcissa. "Do you also wish to see my brother as he died ...


15

Assuming Eagle's Splendor works in the same way that it does in the Dungeons and Dragons game from which it was lifted, then the potion's effects are both limited and temporary, little more than a novelty. By adding Thestral blood (at Dumbledore's suggestion) Lily has apparently increased its permanence to the point that it's been active for decades. Her ...


13

Some of the spells used are different languages, while others are references to other forms of media. Other languages Ma-ha-su (first appears pg 203) - The spell being called the Sumerian Simple Strike Hex implies the language is supposed to be Sumerian. Unfortunately, Google Translate's lack of support for ancient Mesopotamian languages makes this ...


12

In HPMOR transfiguration requires the magic user to visualize the form and the substance. Harry Potter-Evans-Verre discovered partial transfiguration by realizing the subyacent reality of the world is quantum (gaining some freedom regarding the form part) but he still needs to visualize a substance known to him (nanotubes for example). With that in mind ...


10

Off the top of my head, I can think of a few examples of learning advanced magic from a written text. The first would be everything Harry learned from the HBP Potion book, for example Sectumsempra seems to be quite a powerful spell. The second is probably the most famous, the Horcruxes and how they are created. Other than gaining information about how the ...


10

If we are talking about gene crossing, as in Mendelian model, then there is something wrong about that chapter 7. I did not read the mentioned fanfiction, so... Let's science. This is scientifically accepted approach to how parental genes work. Based on this model, you would have to define a dominant allele. In your question, this would be being Squib or ...


9

I will not go around making big and powerful enemies. Don't brag. One must not rant about the opposition's unworthiness after they have foiled you. Never leave the source of your power lying around where someone else can find it. Become an Animagus. Source I stone from: https://www.reddit.com/r/HPMOR/comments/31eyum/...


8

This is addressed in chapter 119. Dumbledore's long-term goal was to prevent the world from being destroyed. Since he knows the general circumstances that will cause the apocalypse, he's using other prophecies to prevent that from happening. There were no prophecies of how the world might be saved, so I found the prophecies that offered loopholes in ...


8

Yes, the universe of "Harry Potter and the Methods of Rationality" is not an alternate history branching off at a certain point, and differs not just in the behaviour of characters: it works differently than the one of J.K. Rowling. Basically, it represents the author's attempt to fix things where (in his view) Rowling's story and world are illogical, ...


7

I am going to bring up what the writer himself has brought up when asked about this: There is indeed one critical location, as the Mendelian pattern shows pretty strongly - from a Bayesian perspective, it's significantly more likely to show up if there's a single critical location, and that's by far the simplest explanation for what shows up. Harry thought ...


6

I don't think you will find an in-universe explanation for that difference. The difference is mainly that Eliezer Yudkowsky, author of HPMOR, wanted an intelligent Voldemort, and in general character that behave logically, while Rowling's Voldemort is less than intelligent. He has to be in order for Harry to be able to beat him. In Deathly Hallows, Harry ...


5

The only way for this to work would be for magic to be recessive on one gene and then another, unrelated, gene that can prevent someone who should be otherwise able to cast from doing so. So two genes. One recessive for a positive trait (Wizardry : W) and the other recessive for a negative trait (Squibness : S). I will follow the usual genetic notation ...


4

In the presence of new chapters, I think this question deserves a new answer. Unfortunately, there's little that can be said without spoiling. You are incorrect in assuming that Petunia marrying a professor is the greatest point of departure; while it is certainly one of the points, the following is a far greater one: If you want to figure it out for ...


4

Yes, the soul can be torn apart by EVERY kind of murder. We only learn from book 6 that someone can rip apart their soul, and it does nowhere state anything about only being able to rip it using an Unforgivable Curse. Here is the part where we learn about this: “How do you split your soul?” “Well,” said Slughorn uncomfortably, “you must understand that the ...


3

Assuming Harry's genetic model to be correct, there are at least two ways in which a Squib could be born into a wizard family. One is that the Squib's biological father might have in fact been a Muggle; so far as I'm aware, wizards do not have paternity tests. The other is a deleterious mutation in one of the two magical genes, causing it to become non-...


3

The main motive of Professor Quirrell in this fan fiction is to defeat death making himself immortal for a long as possible. This is the motivating force for a great portion of what he does in the story. If there is an afterlife this is moot and he does not need to do his devious, rather extreme schemes. While he is not implying he would kill himself, he ...


2

If this was true, then you would expect that many wizards with a basic understanding of genetics would have researched this field extensively. After all, genetics is not limited to magic and a lot of biological related fields like some parts of horticulture require its knowledge. The next logical step would be the search of some forms of eugenism by many ...


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