Normal_Anomaly comments on Harry Potter and the Methods of Rationality discussion thread, part 8 - Less Wrong

8 Post author: Unnamed 25 August 2011 02:17AM

You are viewing a comment permalink. View the original post to see all comments and the full post content.

Comments (653)

You are viewing a single comment's thread. Show more comments above.

Comment author: AlexMennen 04 September 2011 04:33:39PM 2 points [-]

I'm fairly confident that Mr. Hat-and-Cloak is well-informed but aiming to miss-inform. Why he wants to make Hermione suspicious of Harry, I'm not sure.

Comment author: Normal_Anomaly 05 September 2011 02:18:34AM 4 points [-]

The point is more that he's not very good at making Hermione suspicious of Harry.

Comment author: NancyLebovitz 05 September 2011 01:58:05PM 1 point [-]

I'm wondering if Mr. Hat-and-Cloak is someone who's stupid, or at least stupid compared to the main characters. With all the layers of intrigue, it could take a while to be sure.

Comment author: gwern 05 September 2011 06:20:25PM 3 points [-]

At the very least, the dictionary obliviation attack is pretty clever. In retrospect, it's kind of obvious - but no one else in canon or MoR does it. (Harry could think of it easily based on his experiences with his occlumancy instructor, but hasn't yet, probably because it's a very Dark technique or because he can't yet obliviate.)

Comment author: Normal_Anomaly 06 September 2011 06:28:07PM 2 points [-]

It is clever, although if he has to make enough attempts in a row, Hermione may notice the missing chunk of time. That wouldn't be enough info in itself to reveal what's been going on, but it should make her suspect something malicious, and possibly even that she's had her memories tampered with.

Comment author: [deleted] 07 September 2011 10:46:51AM 5 points [-]

This will not happen if Hat-and-Cloak has access to a Time-Turner.

Comment author: [deleted] 08 September 2011 06:40:13AM 0 points [-]

Time-Turners are locked onto a single person's use and cannot normally be used to transport more than one person back in time (Harry and Quirrell had to go through some trouble to travel back in time together using a single time turner, although now I am wondering why they didn't just use simultaneous rotations to meet with each other in the past; surely Quirrell has his own time turner?)

Comment author: [deleted] 08 September 2011 01:47:21PM *  3 points [-]

Time-Turners are not normally locked like Harry's is (which also has the restriction on the time of day when it can be used). For instance, in Prisoner of Azkaban, Hermione uses her Time-Turner to transport her, Harry, and Ron back in time simultaneously.

If Quirrell had his own Time-Turner, then they could have avoided using Millicent's, unless Quirrell wanted to keep his possession secret from Harry. In any case, using two Time-Turners is silly, because that uses up the 6-hours-per-day limit of both Time-Turners instead of just one.

Comment author: TobyBartels 08 September 2011 08:08:02PM 4 points [-]

Hermione uses her Time-Turner to transport her, Harry, and Ron

Pedantic technicality: not Ron.

Comment author: [deleted] 08 September 2011 02:56:53PM *  1 point [-]

Time-Turners are not normally locked like Harry's is (which also has the restriction on the time of day when it can be used). For instance, in Prisoner of Azkaban, Hermione uses her Time-Turner to transport her, Harry, and Ron back in time simultaneously.

Then how did Quirrell figure out the restrictions on Harry's Time Turner without so much as laying eyes on it? All he should have known from Harry's temporal discrepancies was that the thing existed. That implies to me that the set of locks Quirrell mentioned are a standard operating procedure, and the only extras that Harry's turner has is the protective shell / locked before 9 PM combo.

See also posts 1816 through 1822 in the TVTropes Methods of Rationality thread.

Comment author: [deleted] 08 September 2011 05:12:26PM 1 point [-]

So the quote is

The snake twitched its head, a snakish nod. "Many resstrictionss. Locked to your usse only, cannot be sstolen. Cannot transsport other humanss. But ssnake carried in pouch, I ssuspect will go with. Think posssible to hold hourglasss motionlesss within sshell, without dissturbing wardss, while you turn sshell around it. We will tesst in sseven dayss. Will not sspeak of planss beyond thiss. You ssay nothing, to no one. Give no ssign of expectancy, none. Undersstand?"

Nevertheless, it seems possible that if Mr. Hat-and-Cloak has a Time-Turner, he would be able to break the wards on it (Quirrell only avoided doing so because it would be noticed upon inspection of Harry's Time-Turner, and Mr. Hat-and-Cloak is not likely to have that problem).

Comment author: gwern 06 September 2011 06:58:49PM 1 point [-]

Very true; I've forgotten whether wizards can create false memories to cover up big time gaps. If they can, it's a much smaller problem than it looks.

But we have reason to believe that Cloak-and-hat was not expecting to have to make very many attempts, that he either is usually very good at the dictionary attack or he's that Dunning-Kruger - he got so frustrated he exploded and asked a revealing question outright. And then, the writing seems to imply, he only needed one more try to crack Hermione's code.

So, this reads to me like an expert using an effective tool who happened to run into an extremely unusual girl/problem, not a only-modestly-clever-or-perhaps-even-stupid person. (Also, thinking again on my remark that it's a very Dark technique, I'm even more confident that this is not Lupus or Sirius - neither of them seems like the kind of character to pull such a Slytherin technique.)

Comment author: hairyfigment 07 September 2011 05:39:24AM *  13 points [-]

I'm even more confident that this is not Lupus or Sirius

It's never Lupus.

Comment author: gwern 07 September 2011 12:43:19PM 1 point [-]

I walked right into that one.

Comment author: AlexMennen 05 September 2011 06:00:43PM 0 points [-]

Are you sure about that? Hermione firmly denies being suspicious of Harry while talking to Mr. Hat-and-Cloak, but that doesn't necessarily mean that this won't make her more suspicious of him on at least a subconscious level. If Mr. Hat-and-Cloak is Professor Quirrell, as is strongly suggested in both of his appearances, then we should expect that this is fairly likely to be the case, as I would expect Quirrell to be fairly good at this sort of thing.

Comment author: Normal_Anomaly 06 September 2011 06:25:41PM 0 points [-]

Yes. If Mr. Hat-and-Cloak is Quirrell, then either:

a) He will sucessfully make Hermione more suspicious of Harry, or

b) He will make Hermione less suspicious of Harry and that will be what he wanted.

Comment author: Desrtopa 06 September 2011 08:21:28PM 3 points [-]

I would expect Quirrell to know better than to appear to Hermione as Hat-and-Cloak in the first place.

Comment author: TobyBartels 07 September 2011 07:12:26PM 2 points [-]

Yes, this particular episode has greatly increased my confidence that H&C, whoever it is, is not Quirrell.

Comment author: Bugmaster 09 September 2011 07:07:00AM 4 points [-]

I'm not entirely convinced. If Quirrell has a weakness (note, I did say "if"), then it's his lack of empathy with children, and especially Muggle-born children. Harry is able to consistently surprise him (f.ex. in Azkaban, or by cheering him up at the end of the bully saga, etc.), and I didn't get the impression that this is because Harry is some sort of an uber-outlier. He's an outlier, yes, but he's still a human kid.

This weakness probably stems from Quirrell's cynicism, which a few characters have already commented upon. Qurrell subconsciously assumes that everyone is acting like a perfectly rational agent that attempts to maximize its own expected utility by enhancing its power to manipulate external reality (which occasionally includes other actors). In Quirrell's subset of the world, this assumption is quite often correct, but most real people -- such as Hermione -- do not, in fact, act that way all of (or even most of) the time.

Comment author: rocurley 09 September 2011 08:59:28PM 5 points [-]

Qurrell subconsciously assumes that everyone is acting like a perfectly rational agent that attempts to maximize its own expected utility by enhancing its power to manipulate external reality

He definitely doesn't think so consciously; one of his more memorable quotes is something along the lines of "The main thing ordinary people do, Mr. Potter, is nothing".

Comment author: Bugmaster 09 September 2011 10:09:31PM 2 points [-]

Ok, that's true. Instead of saying "everyone", I should've said "everyone who is not beneath his notice, except perhaps in aggregate". I doubt that Quirrell counts Harry or Hermione as members of the "ordinary people" set.