Comment author: Gurkenglas 09 July 2013 11:02:46PM 2 points [-]

Ah, I believe you have misunderstood me. Lets say that in Yudcanon, either Dumbledore stole the map or Quirrel stole the map or Harry stole the map or Hat&Cloak stole the map or Mr. X stole the map. If Harry makes sure that Harry never steals the map, there is one less person who might have had a reason to steal the map, and the probability of the map being stolen versus it not being stolen goes down, even though he already knows that the map was stolen when he makes that decision; just like when Omega presents you the two boxes, you should retroactively precommit to one-box to receive a million, even though the content of the boxes is already determined.

Imagine Harry saw that the map was stolen, and thinks immediately of stealing it himself so as to acquire it. Naturally, he then plans to precommit to invisibility-cloak deposit it right behind Fred and George in 5 seconds. He might then go further and precommit instead to never having stolen it in the first place, so that it never leaves the grasp of the Weasley twins and Harry doesn't have to go to the effort of stealing it. Therefore, he now knows that the map was stolen by someone else, and that the probablity of the map being stolen in the first place has lessened, which is a good thing.

Comment author: EternalStargazer 10 July 2013 04:31:41AM 5 points [-]

This is the point that I think is escaping many people in this thread. The options aren't as simple as A/A+B in Newcomb.

The map has been stolen. Everything we know about how Time Travel works in this universe indicates that this is a fixed fact that cannot be altered. Who took the map however is an unknown, and while it cannot be 'altered' either, the Effect can in this case precede the Cause. 'Map has been taken' can happen before 'Harry takes map because someone had to' such that B causes A and A leads to B. If Harry doesn't commit to it, B is still true, and so the Map is lost to him. His choices are (Map is Gone, I have it.) or (Map is gone.) The choice 'Map is still here and Hermione lives' is not a valid choice and should be discounted. So, his choices are to benefit or not benefit from the Map being gone.

The interesting question is, if the Twins forgot the Map entirely, how did they remember 'Deligitor Prodi'? Admittedly not perfectly.

Comment author: pangel 17 December 2012 10:37:24PM 5 points [-]

"Those who are spoken of in a prophecy, may listen to that prophecy there. Do you see the implication, Harry?"

Shouldn't Minerva see another implication, that Dumbledore has no reason to wonder whether he is the dark lord of the prophecy?

Comment author: EternalStargazer 19 December 2012 02:52:58PM *  6 points [-]

There is a more interesting implication in that section actually.

Light glinted from the reflection of Albus's half-moon glasses as the old wizard slowly shook his head. "I think that would be unwise," Albus said. "For reasons beyond the obvious. It is dangerous, that place which Merlin made; more dangerous to some people than others."

'To some people than others' implies Harry. Ergo, it would be more dangerous for Harry to go there.

Ergo, there are other things in the Hall of Prophecy which would effect Harry.

Ergo, there are more Prophecies about Harry there. We already know or can suspect one, the HE IS COMING one. (Which incidentally I suspect is 'TEAR APART THE VERY FABRIC OF SPACE AND TIME' and that [rot13] Gur Zna Haqre gur Ung, naq gur bevtvangbe bs n ohapu bs gurfr cynaf vf n Shgher Uneel jub unf tbggra nebhaq Gvzr Gheare erfgevpgvbaf. Ur shpxrq fbzrguvat hc naq vf gelvat gb svk vg, be ur qvqa'g naq ernyvmrq gung ur arrqrq gb qb gurfr guvatf gb rafher uvf bja gvzryvar.)

Also from this, since Dumbledore will not take him there, we can assume that whatever it is that Harry might discover there would be detrimental to Dumbledore.

On a meta note, it is also a reason (beyond the many others) for which Eleizer would have had to deny Harry a phoenix. Far too much freedom of movement for the plot to remain on any semblance of rails.

Comment author: Alsadius 19 December 2012 09:33:29AM 1 point [-]

Harry isn't much of a believer in the noble lie, if you haven't noticed.

Comment author: EternalStargazer 19 December 2012 02:41:12PM 3 points [-]

He didn't even have to lie. All he had to do was say the thing in italics which he thought, right before the end.

Snape if anyone understands exactly how excruciating emotional pain can be.

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