TheOtherDave comments on Raising the forecasting waterline (part 1) - Less Wrong

32 Post author: Morendil 09 October 2012 03:49PM

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Comment author: TheOtherDave 10 October 2012 02:13:21PM *  1 point [-]

provided I think a question and its negation are equally likely to have been asked, there is a 50% chance that the answer to the question you have asked is yes.

Well, yes. But ought I believe that a yes/no question I have no idea about is as likely as its negation to have been asked? (Especially if it's being asked implicitly by a situation, rather than explicitly by a human?)

Comment author: TraderJoe 10 October 2012 05:48:05PM *  1 point [-]

[comment deleted]

Comment author: chaosmosis 10 October 2012 06:22:14PM 1 point [-]

Ratio of true statements to false ones: low. Probability TraderJoe wants to make TheOtherDave look foolish: moderate, slightly on the higher end. Ratio of the probability that giving an obviously false statement an answer of relatively high probability would make TheOtherDave look foolish to the probability that giving an obviously true statement a relatively low probability would make TheOtherDave look foolish: moderately high. Probability that the statement is neither true nor false: low.

Conclusion: أنا من (أمريك is most likely false.

Comment author: TheOtherDave 10 October 2012 06:31:59PM 0 points [-]

Ratio of the probability that giving an obviously false statement an answer of relatively high probability would make TheOtherDave look foolish to the probability that giving an obviously true statement a relatively low probability would make TheOtherDave look foolish: moderately high.

That's interesting.

I considered a proposition like this, decided the ratio was roughly even, concluded that TraderJoe might therefore attempt to predict my answer (and choose their question so I'd be wrong), decided they'd have no reliable basis on which to do so and would know that, and ultimately discarded the whole line of reasoning.

Comment author: chaosmosis 10 October 2012 07:02:40PM *  -2 points [-]

I considered a proposition like this, decided the ratio was roughly even, concluded that TraderJoe might therefore attempt to predict my answer (and choose their question so I'd be wrong),

I figured that it would be more embarrassing to say something like "It is true that I am a sparkly unicorn" than to say "It is false that an apple is a fruit". Falsehoods are much more malleable, largely as an effect of the fact that there are so many more of them than truths, also because they don't have to be consistent. Since falsehoods are more malleable it seems that they'd be more likely to be ones used in an attempt to insult someone.

decided they'd have no reliable basis on which to do so and would know that, and ultimately discarded the whole line of reasoning.

My heuristic in situations with recursive mutual modeling is to assume that everyone else will discard whatever line of reasoning is recursive. I then go one layer deeper into the recursion than whatever the default assumption is. It works well.

Comment author: TheOtherDave 10 October 2012 07:17:46PM 3 points [-]

I then go one layer deeper into the recursion than whatever the default assumption is. It works well.

Sadly, I appear to lack your dizzying intellect.

Comment author: chaosmosis 10 October 2012 07:26:32PM 3 points [-]

I used to play a lot of Rock, Paper, Scissors; I'm pretty much a pro.

Comment author: gjm 10 October 2012 09:40:07PM 1 point [-]

It is possible that you may have missed TheOtherDave's allusion there.

Comment author: chaosmosis 10 October 2012 10:27:16PM *  0 points [-]

The phrase sounded familiar, but I don't recognize where it's from and a Google search for "lack your dizzying intellect" yielded no results.

Comment author: chaosmosis 10 October 2012 10:29:11PM 2 points [-]

Wait. Found it. Princess Bride? Is it in the book too, or just the movie?

Comment author: chaosmosis 10 October 2012 07:04:26PM *  -1 points [-]

My heuristic in situations with recursive mutual modeling is to assume that everyone else will discard whatever line of reasoning is recursive. I then go one layer deeper into the recursion than whatever the default assumption is. It works well.

Preempt: None of you have any way of knowing whether this is a lie.

Comment author: chaosmosis 10 October 2012 07:07:55PM -1 points [-]

The parent of this comment (yes, this one) is a lie.

Comment author: chaosmosis 10 October 2012 07:08:03PM -2 points [-]

The parent of this comment (yes, this one) is a lie.

Comment author: chaosmosis 10 October 2012 07:09:02PM -2 points [-]

The parent of this comment is true. On my honor as a rationalist.

I would like people to try to solve the puzzle.

This comment (yes, this one) is true.

Comment author: Kindly 11 October 2012 05:24:07PM 4 points [-]

I think the solution is that you have no honor as a rationalist.

Comment author: chaosmosis 10 October 2012 06:23:34PM -1 points [-]

PBEERPG.

Comment author: TheOtherDave 10 October 2012 06:08:04PM 1 point [-]

I assume you mean without looking it up.

My answer is roughly the same as TimS's... it mostly depends on "Would TraderJoe pick a true statement in this context or a false one?" Which in turn mostly depends on "Would a randomly selected LWer pick a true statement in this context or a false one?" since I don't know much about you as a distinct individual.

I seem to have a prior probability somewhat above 50% for "true", though thinking about it I'm not sure why exactly that is.

Looking it up, it amuses me to discover that I'm still not sure if it's true.

Comment author: CCC 11 October 2012 06:57:12AM 0 points [-]

This is a perfect situation for a poll.

How probable is it that TraderJoe's statement, in the parent comment, is true?

Submitting...

Comment author: chaosmosis 12 October 2012 04:14:11AM *  0 points [-]

I voted with what I thought my previous estimate was before I'd checked via rot13.

Comment author: TraderJoe 11 October 2012 10:44:11AM *  0 points [-]

[comment deleted]

Comment author: TimS 10 October 2012 05:52:48PM 0 points [-]

It seems like my guess should be based on how likely I think it is that your are trying to trick me in some sense. I assume you didn't pick a sentence at random.

Comment author: TraderJoe 12 October 2012 07:34:07AM *  0 points [-]

[comment deleted]

Comment author: TraderJoe 10 October 2012 05:49:12PM *  0 points [-]

[comment deleted]

Comment author: Kindly 11 October 2012 02:44:27PM 0 points [-]

The transliteration does, but the actual Arabic means "V'z Sebz Nzrevpn".

So in fact TraderJoe's prediction of 0.5 was a simple average over the two statements given, and everyone else giving a prediction failed to take into account that the answer could be neither "true" nor "false".

Comment author: TheOtherDave 10 October 2012 06:11:57PM 0 points [-]

Not according to google translate. Incidentally, that string is particularly easy to uncypher by inspection.

Comment author: TraderJoe 11 October 2012 06:40:41AM *  0 points [-]

[comment deleted]

Comment author: thomblake 10 October 2012 06:15:04PM 0 points [-]

Yeah, that's an interesting discrepancy.

Comment author: chaosmosis 10 October 2012 06:17:19PM *  0 points [-]

All questions that you encounter will be asked by a human. I get what you mean though, if other humans are asking a human a question then distortions are probably magnified.

Comment author: TheOtherDave 10 October 2012 06:25:29PM 1 point [-]

Some questions are implicitly raised by a situation. "Is this coffee cup capable of holding coffee without spilling it?", for example. When I pour coffee into the cup, I am implicitly expressing more than 50% confidence that the answer is "yes".

Comment author: chaosmosis 10 October 2012 10:34:36PM 0 points [-]

What I'm saying is that what's implicit is a fact about you, not the situation, and the way the question is formed is partially determined by you. I was vague in saying so, however.

Comment author: TheOtherDave 10 October 2012 10:48:17PM 0 points [-]

I agree that the way the question is formed is partially determined by me. I agree that there's a relevant implicit fact about me. I disagree that there's no relevant implicit fact about the situation.

Comment author: chaosmosis 11 October 2012 02:54:41AM 0 points [-]

Nothing can be implicit without interpretation, sometimes the apparent implications of a situation are just misguided notions that we have inside our heads. You're going to have a natural tendency to form your questions in certain ways, and some of these ways will lead you to asking nonsensical questions, such as questions with contradictory expectations.

Comment author: TheOtherDave 11 October 2012 03:22:07AM 1 point [-]

I agree that the apparent implications of a situation are notions in our heads, and that sometimes those notions are nonsensical and/or contradictory and/or misguided.