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gwern comments on Harry Potter and the Methods of Rationality discussion thread, part 19, chapter 88-89 - Less Wrong Discussion

12 Post author: Vaniver 30 June 2013 01:22AM

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Comment author: gwern 01 July 2013 06:14:56PM 15 points [-]

To defend it against anyone with a sunlight-generating spell or who has some acorn potion handy.

Comment author: MugaSofer 29 July 2013 06:34:41PM -1 points [-]

In fact, isn't there such a spell used in Canon?

Comment author: gwern 29 July 2013 09:08:10PM 1 point [-]

There's 'Lumos' but it's never mentioned as a dead-useful defense against trolls so presumably isn't as good as real sunlight or a sunlight-generating spell.

Comment author: MugaSofer 29 July 2013 09:58:05PM *  -1 points [-]

No, I could swear there was an actual ... maybe in one of the movies?

EDIT: I was thinking of this