In response to How to Fix Science
Comment author: satt 03 March 2012 10:37:43PM *  12 points [-]

There are many more problems with NHST and with "frequentist" statistics in general, but the central one is this: NHST does not follow from the axioms (foundational logical rules) of probability theory. It is a grab-bag of techniques that, depending on how those techniques are applied, can lead to different results when analyzing the same data — something that should horrify every mathematician.

The inferential method that solves the problems with frequentism — and, more importantly, follows deductively from the axioms of probability theory — is Bayesian inference.

But two Bayesian inferences from the same data can also give different results. How could this be a non-issue for Bayesian inference while being indicative of a central problem for NHST? (If the answer is that Bayesian inference is rigorously deduced from probability theory's axioms but NHST is not, then the fact that NHST can give different results for the same data is not a true objection, and you might want to rephrase.)

In response to comment by satt on How to Fix Science
Comment author: lessdazed 07 March 2012 08:51:46PM 0 points [-]

depending on how those techniques are applied, can lead to different results when analyzing the same data

But two Bayesian inferences from the same data can also give different results. How could this be a non-issue for Bayesian inference while being indicative of a central problem for NHST?

If the OP is read to hold constant everything not mentioned as a difference, that includes the prior beliefs of the person doing the analysis, as against the hypothetical analysis that wasn't performed by that person.

Does "two Bayesian inferences" imply it is two different people making those inferences, with two people not possibly having identical prior beliefs? Could a person performing axiom-obeying Bayesian inference reach different conclusions than that same person hypothetically would have had they performed a different axiom-obeying Bayesian inference?

Comment author: markette 28 January 2012 04:45:16AM *  8 points [-]

Forget cleverness for its own sake, optimize for the consequences.

someone reads "InSight", their brain says "oh, I get it, they combined insight and in sight. Their name is a pun." imagines suited marketing man. Where do you want to go for lunch?

Capturing that first thought and directing it somewhere useful is crucial

Comment author: lessdazed 05 March 2012 03:43:59AM 0 points [-]
Comment author: lessdazed 11 February 2012 12:34:06AM -2 points [-]

Is the sunk cost fallacy a fallacy?

I ask myself about many statements: would this have the same meaning if the word "really" were inserted? As far as my imagination can project, any sentence that can have "really" inserted into it without changing the sentence's meaning is at least somewhat a wrong question, one based on an unnatural category or an argument by definition.

If a tree falls in the forest, does it make a sound? --> If a tree falls in the forest, does it really make a sound?

Is Terry Schiavo alive? --> Is Terry Schiavo really alive?

Is the sunk cost fallacy a fallacy? --> Is the sunk cost fallacy really a fallacy?

Comment author: lessdazed 11 February 2012 12:18:50AM 0 points [-]

When you surround an army, leave an outlet free. Do not press a desperate foe too hard.

The Art of War

Comment author: lessdazed 11 February 2012 12:00:57AM 10 points [-]

Game theory won out over good wishes.

--Burning Man organizers

In response to comment by lessdazed on Waterfall Ethics
Comment author: ShardPhoenix 30 January 2012 10:19:53PM *  1 point [-]

Do you mean to say that Aaronson's paper is bad, or that everyone's already read it?

Comment author: lessdazed 31 January 2012 12:57:00AM 0 points [-]

Not that it's bad, for that would be confusing levels, even if "shit" were being used in its usual figurative sense. For example, I would consider some true things said that are self-harmful violations of social norms "shit."

Like others I read it from a link on LW, I think...thanks for posting.

In response to Waterfall Ethics
Comment author: lessdazed 30 January 2012 09:35:55PM 2 points [-]

Shit and Bullshit Rationalists Don't Say:

"I've read more papers by Scott Aaronson than just the one." "Which one?" (Both of these.)

Quantity of experience: brain-duplication and degrees of consciousness Nick Bostrom

Comment author: shminux 30 January 2012 09:20:30PM 3 points [-]

While nicely sounding, it probably does not convey the relevant information to an "outsider". Particularly, this is something a straw Vulcan would do, make a perfectly logical decision based on lousy priors. It emphasizes process over goals, and so is susceptible to lost purposes.

I wonder if this suggestion can be modified to clarify the ultimate goal: to make the best decision possible, including digging up the best possible priors and testing the conclusions along the way. Unfortunately, my metaphor chest came up cringe-worthy: Decision Tree... Garden?, Cultivating Decision Tree?.

Comment author: lessdazed 30 January 2012 09:28:24PM 5 points [-]

Decision Tree: Roots of Knowledge.

Decision Tree: Applied Wisdom.

Decision Tree: Our mascot is a thinly veiled rip-off of an Ent! Sweet!

Comment author: [deleted] 29 January 2012 01:47:57PM *  21 points [-]
  • Decision Tree

  • Decision Tree Foundation.

Comment author: lessdazed 30 January 2012 08:51:57PM 3 points [-]

My favorite so far.

Comment author: Modig 30 January 2012 01:21:56AM *  9 points [-]

I'm very excited to have found this community. In a way, it's like meeting a future, more evolved version of myself. So many things that I've read about here I've considered before, but often in a more shallow and immature way. A big thanks to all of you for that!

To the topic of me, I'm 24, male, and Swedish. After studying some of PJ Eby's work, I identify strongly as a naturally struggling person. I've been trying to figure out why for all my life, I think I read Wayne Dyer at about the same age as Eliezer read Feynman. Since then I've read a lot more, and at this point it seems like I have very credible explanations for why things turned out as they did.

Still, even though I might think I ought to have the tools now to stake out a better future path for myself, I'm plagued by learned helplessness and surrounded by ugh-fields. But as I see it there is only one best way forward - to learn more and then attempt to do things better.

I'm a great admirer of the stoic philosopher Lucius Seneca. Here's a short segment from one of his letters that resonates with me:

It is clear to you, I know, Lucilius, that no one can lead a happy life, or even one that is bearable, without the pursuit of wisdom, and that the perfection of wisdom is what makes the happy life, although even the beginnings of wisdom makes life bearable.

And a few paragraphs down...:

Philosophy is not an occupation of a popular nature, nor is it pursued for the sake of self-advertisement. Its concern is not with words, but with facts. It is not carried on with the object of passing the day in an entertaining sort of way and taking the boredom out of leisure. It moulds and builds the personality, orders one's life, regulates one's conduct, shows one what one should do and what one should leave undone, sits at the helm and keeps one on the correct course as one is tossed about in perilous seas. Without it no one can lead a life free of fear or worry. Every hour of the day countless situations arise that call for advice, and for that advice we have to look to philosophy.

I believe that the topics being explored on this site are a natural extension of what Seneca and his contemporaries termed philosophy. To live more purposefully, to be happy and to contribute more to others, studying these topics isn't optional, it's essential. And that's why I'm so glad this community exists and that I've found it.

Comment author: lessdazed 30 January 2012 01:55:10AM 2 points [-]

a future, more evolved version of myself.

I'm offended!

Just kidding.

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