Saw someone else do it already.
Actually this is a fallacy I've seen coming up a lot in discussions of the fic. People are so enchanted with being able to come up with many possibilities that they forget to ask which are the probable possibilities. Sure, the laws change somewhat when you're matching wits with an author instead of reality; but when it comes to people talking about lots of other possible explanations for the Mendelian pattern in wizard genetics, for example, they seem to be doing a Culture of Objections thing where they declare victory as soon as they come up with an overlooked possibility that can be used to reject the paper, never mind the prior probability on it.
I've seen this answer gotten, so I know it's gettable.
I assume that it's been suggested before but . . . . may I suggest (cast a vote) that you spend a bit more effort to advertise HP&tMoR in more places? It's awesomely accessible (especially when considered in comparison to virtually anything else with close to the explanatory power) and an awful lot of fun to boot. (Actually, I should be suggesting that everyone here who likes it should make an effort to advertise it to all their friends. It certainly should have far, far more than 578 people who Like it on Facebook.).
[Update: and now there's a fifth discussion thread, which you should probably use in preference to this one. Later update: and a sixth -- in the discussion section, which is where these threads are living for now on. Also: tag for HP threads in the main section, and tag for HP threads in the discussion section.]
The third discussion thread is above 500 comments now, just like the others, so it's time for a new one. Predecessors: one, two, three. For anyone who's been on Mars and doesn't know what this is about: it's Eliezer's remarkable Harry Potter fanfic.
Spoiler warning and helpful suggestion (copied from those in the earlier threads):
Spoiler Warning: this thread contains unrot13'd spoilers for Harry Potter and the Methods of Rationality up to the current chapter and for the original Harry Potter series. Please continue to use rot13 for spoilers to other works of fiction, or if you have insider knowledge of future chapters of Harry Potter and the Methods of Rationality.
A suggestion: mention at the top of your comment which chapter you're commenting on, or what chapter you're up to, so that people can understand the context of your comment even after more chapters have been posted. This can also help people avoid reading spoilers for a new chapter before they realize that there is a new chapter.