Harry Potter and the Methods of Rationality discussion thread, part 19, chapter 88-89

Vaniver

This is a new thread to discuss Eliezer Yudkowsky’s Harry Potter and the Methods of Rationality and anything related to it. This thread is intended for discussing chapter 88-89. The previous thread has passed 500 comments.

There is now a site dedicated to the story at hpmor.com, which is now the place to go to find the authors notes and all sorts of other goodies. AdeleneDawner has kept an archive of Author’s Notes. (This goes up to the notes for chapter 76, and is now not updating. The authors notes from chapter 77 onwards are on hpmor.com.)

The first 5 discussion threads are on the main page under the harry_potter tag. Threads 6 and on (including this one) are in the discussion section using its separate tag system. Also: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18.

Spoiler Warning: this thread is full of spoilers. With few exceptions, spoilers for MOR and canon are fair game to post, without warning or rot13. More specifically:

You do not need to rot13 anything about HP:MoR or the original Harry Potter series unless you are posting insider information from Eliezer Yudkowsky which is not supposed to be publicly available (which includes public statements by Eliezer that have been retracted).

If there is evidence for X in MOR and/or canon then it’s fine to post about X without rot13, even if you also have heard privately from Eliezer that X is true. But you should not post that “Eliezer said X is true” unless you use rot13.

Spoiler Warning: this thread is full of spoilers. With few exceptions, spoilers for MOR and canon are fair game to post, without warning or rot13. More specifically:

You do not need to rot13 anything about HP:MoR or the original Harry Potter series unless you are posting insider information from Eliezer Yudkowsky which is not supposed to be publicly available (which includes public statements by Eliezer that have been retracted).

If there is evidence for X in MOR and/or canon then it’s fine to post about X without rot13, even if you also have heard privately from Eliezer that X is true. But you should not post that “Eliezer said X is true” unless you use rot13.

Arf, didn't mean to start this again, but here's my usual litany:

Gur bayl rivqrapr jr unir gung Qhzoyrqber xvyyrq Anepvffn vf gung Yhpvhf fnlf Qhzoyrqber gbyq uvz fb. Jr qba'g xabj gur rknpg jbeqf Qhzoyrqber hfrq, naq oheavat fbzrbar nyvir ernyyl qbrfa'g frrz yvxr Qhzoyrqber'f fglyr (nygubhtu V jvyy fnl gung Puncgre 89 vf gur svefg gvzr V'ir gubhtug gur Qhzoyrqber-vf-rivy pebjq zvtug npghnyyl unir fbzrguvat fhofgnagvir gb jbex jvgu). Zrnajuvyr:

Nzryvn'f qrsnhyg gubhtug jura eriratr pbzrf gb zvaq vf "Fbzrbar jbhyq ohea sbe guvf."
Anepvffn'f fvfgre xvyyrq Nzryvn'f oebgure.
Nzryvn vf gur bar jub fcrnxf hc va gur Jvmratnzbg, gryyvat Qhzoyrqber "Qba'g rira guvax nobhg vg" jura Qhzoyrqber pbafvqref pbasrffvat gb Anepvffn'f zheqre.

Jura V bayl xarj nobhg #1, V jebgr vg bss nf n cbffvoyr pbvapvqrapr. Ohg gura crqnagreevsvp cbvagrq bhg #2 gb zr, naq V fgebatyl hctenqrq gur ulcbgurfvf'f cebonovyvgl. Gura yngre #3 unccrarq, naq V orpnzr nf pregnva nf V nz abj.

And if that's not as close as you can actually come to a Bayesian updating process when reading a fiction book, where the only experiment you can perform is "Wait for more chapters and then read them", I would love to learn what's legitimately closer.

1) Gryyvat fbzrbar gung lbh qvq fbzrguvat frrzf yvxr sne fgebatre rivqrapr gb zr guna hfvat n fvzvyne jbeq bapr.

2) Erzrzore, gur oheavat unccrarq evtug nsgre Noresbegu jnf xvyyrq, fb Qhzoyrqber'f zbgvir vf nyzbfg pregnvayl fgebatre guna Nzryvn'f.

3) Nyy guvf erdhverf vf na nyyl pybfr rabhtu gb xabj jung lbh'er guvaxvat naq gb trg lbh gb onpx qbja. V qba'g qbhog gung Nzryvn xabjf nobhg vg, V whfg qba'g guvax fur jnf gur bar jub crefbanyyl qvq vg. Tvira gung Obarf naq ZpTbantnyy ner(V guvax) gur bayl BBGC zrzoref va gur ebbz ng gur gvzr, vg'f irel jrnx rivq... (read more)