MathMage comments on Harry Potter and the Methods of Rationality discussion thread, March 2015, chapter 116 - Less Wrong

4 Post author: Gondolinian 04 March 2015 08:11PM

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Comment author: Macaulay 04 March 2015 08:43:09PM 13 points [-]

Shouldn't Harry have fallen to his knees twenty seconds earlier, if he originally heard/saw the explosion via Voldie-simulcast?

Comment author: MathMage 06 March 2015 10:37:43PM 0 points [-]

What do you mean? He narrated the whole sequence before the explosion, and fell to his knees at the moment Voldemort supposedly died, which is coincident with the explosion. I don't see a problem, let alone one that would be fixed by shifting the narrative back 20 seconds.

Comment author: GMHowe 07 March 2015 03:47:33AM 1 point [-]

Due to the finite speed of sound, the explosion would have had to occur approximately 20 seconds before they heard it. So if Voldemort's death was coincident with the explosion it would had to have happened about 20 seconds before Harry said it did.

She'd just about decided that this had to all be a prank in unbelievably poor taste, when a distant but sharp CRACK filled the air. [...] "It worked," Harry Potter gasped aloud, "she got him, he's gone." [...] "I think it's in that direction." Harry Potter pointed in the rough direction the CRACK had come from, "I'm not sure how far. The sound from there took twenty seconds to get here, so maybe two minutes on a broomstick -"