Live data from Hacker News

Bayes's Theorem: What's the Big Deal?

blogs.scientificamerican.com

231–240 of 267 posts

Re: Bayes's Theorem: What's the Big Deal?

#231

Earlier quoted context omitted.

I don't understand how you can be so certain that the hypothetical scenarios they imagine can't possibly happen. Even if it really is laughable, we spend a lot of money on laughable research (homeopathy, anyone?), so why is this case so particularly bad?

...Just because we've spent money on one laughable research doesn't mean we should spend it on more, does it? Are you seriously going to argue that?

No, what I'm arguing is that if we only spent money on things everyone agrees are useful, we'd never get anything done.

Re: Bayes's Theorem: What's the Big Deal?

#232
post #225

Earlier quoted context omitted.

The Flynn effect mystery is exactly the same as the mystery that in most countries the younger population is taller than the previous generation. The fact that the Flynn effect only occurs in the bottom half of the intelligence distrubtion is a bit of a clue as to what is the cause.

What's the cause that follows from that it mostly affects the bottom 50%?

What is the cause of the population getting taller?

The brain is just another organ that is affected by nutrition in the same way height is. Improve nutrition and those individuals that are below their genetic potential due to poor nutrition will improve. Guess which half of the population has suffered from poor nutrition in the past?

Re: Bayes's Theorem: What's the Big Deal?

#233

Earlier quoted context omitted.

Someone who feels injustice, but hasn't had the time or resources to codify it into a calm rational treatise is said to be speaking from emotion. Someone who merely experiences base greed, but is able to justify it to themselves as righteous and deliberate and socially beneficial with a bunch of babble, is considered rational. And so, the idea that the rigid set of discursive boundaries that LessWrongians impose upon…

I can't seem to post a reply, so I'll wrap it up here. I'm criticizing an ecosystem. Yudkowsky-types noodle with weird hypotheticals, others with elitist views get validation. Fantasizing of fixing our current issues with futuristic tech, using it as a yard-stick to criticize ie: a collective black identity from forming a political block, is not explicitly pro-status quo but ends up being so in practice.

I'm not very familiar with the subject matter, but do you realize that this concluding argument is very weak?

Firstly, I don't think I've seen mentioned an instance where Yudkowsky seems to be trying to prevent a collective black identity from forming a political block.

Secondly, you've suggested that the mechanism by which Yudkowsky's material end up as bullets for people who desire to perpetuate prejudice is where the prejudiced party misrepresents Yudkowsky (thereafter, Y). Therefore, your reasoning goes, Y and the LW commenters are guilty for engaging in subject matter that are ripe for appropriation.

Unless I'm mistaken, your accusation is one that is pretty unjust in itself. You are accusing Y with a moral crime for Y&LW's association with (racially) prejudiced groups that have misrepresented Y as prejudiced. This is despite that Y has neither affirmed this association nor mentioned anything prejudiced, his crime being entertaining "weird hypotheticals". Rather, if such a thing has occurred, isn't Y a victim of the prejudiced groups himself?

Re: Bayes's Theorem: What's the Big Deal?

#234
post #42

Earlier quoted context omitted.

In my field (Epidemiology), when doing Bayesian analysis, it is very common to set one's priors to be a distribution. Sometimes the point estimate and spread of a previously conducted study or meta-analysis, sometimes merely a uniform distribution with upper and lower bounds ("It is extremely unlikely that the relative risk of disease for this exposure is below 0.01 or above 100...") It's been argued that frequentist…

How does that work? It doesn't sound like a well-defined distribution since the area under the curve needs to be 1.

It turns out that priors don't actually need to be distributions all the time. This often occurs when seeking maximally "uninformative" priors.

Re: Bayes's Theorem: What's the Big Deal?

#235
post #230

Earlier quoted context omitted.

cult |kʌlt| noun 1 a system of religious veneration and devotion directed towards a particular figure or object: the cult of St Olaf. • a relatively small group of people having religious beliefs or practices regarded by others as strange or as imposing excessive control over members. The veneration of Yudkowski and others in the LW community is more than a bit "religious". So I'd say by definition it's a cult. LW ha…

I cannot judge to which degree these theses are bullshit, but I've found LW a tremendously rich source of thinking tools and I'm convinced that reading or skimming a lot of the sequences have improved my thinking. Regarding the rape sequence in HPMOR: It's a terribly chosen trope to convey that the fictional society has very different values from ours. Apparently it ties into various parts of the story, so that EY di…

> I cannot judge to which degree these theses are bullshit.

Go the link, go to references, read about them. I'll outline the gist: Most of what Yudkowsky says is extremely sci-fi, no real basis in scientific fact, but stretching the current technological progress to the point where his opinions on things (stuff like transhumanism, singularity) can be justified.

What he's preaching isn't science. Certainly not rigorous experimental science. He (along with Bostrom) tends to engage in extreme hypotheticals. Which, sure if you're a philosopher, is fine. But even then, wouldn't you want your work to be judged by like-minded peers? But alas, here has a convenient excuse of being "auto didactic" to fall back on, so he can sit on his armchair and critique traditional education, and his lack of peer reviewed material.

Not to mention, and this is a bit of a pet peeve, I find that most LW people are too self-absorbed, I've literally seen a blog where the person who runs it "warns" the readers that what he writes is too complicated for people to follow. This sort of narcissistic, self congratulatory thinking is what puts me off more than anything. Writing long form posts on the Internet which use complicated words don't make you smart.

http://laurencetennant.com/bonds/cultofbayes.html is another critique. It comes off as bit crass, but stick with it.

> I've found LW a tremendously rich source of thinking tools and I'm convinced that reading or skimming a lot of the sequences have improved my thinking.

There are other ways to improve your thinking. Read books. Read different kind of books, that offer counter point of views. Farnham Street Blog is a good place to start for a list of resources for thinking tools/mental models btw. :)

Re: Bayes's Theorem: What's the Big Deal?

#236

Earlier quoted context omitted.

...Just because we've spent money on one laughable research doesn't mean we should spend it on more, does it? Are you seriously going to argue that?

No, what I'm arguing is that if we only spent money on things everyone agrees are useful, we'd never get anything done.

Not everyone has to agree. That's why we have the scientific method and research institutes. If the current science shows that something is worth exploring in more detail, that some avenues are worth spending money on, spending money on them makes sense.

Bullshit Ideas like AI apocalypse and singularity, transhumanism, downloading brain into a computer do not fit into that criteria.

Re: Bayes's Theorem: What's the Big Deal?

#237

Earlier quoted context omitted.

If your ideas can stand on their own merit, you can defend them against criticism without resorting down to saying things like "oh it's a pseudo criticism and cherry picking facts". You're the one calling it bullshit. You even admit you wouldn't want to refute specific accusations. And then go on to call it "malicious bullshit". So, basically what you're saying is that we shouldn't listen to this criticism (which pro…

Yes, I see the problem you mention. All I offer is, as a person who spent some time hanging around that group but not exactly an insider, my honest assessment: this criticism is very unfair, very hurtful, and mostly bullshit. You don't have to believe me - but you now have a second data point for your consideration. I did engage with some points in comments below though, to show examples of this cherry-picking facts,…

> this criticism is very unfair, very hurtful, and mostly bullshit. You don't have to believe me - but you now have a second data point for your consideration.

No I do not. All you've provided me is a point of view without anything resembling rational reasoning. I believe that trains can fly. You don't have to believe me, but now you have another data point for your consideration.

> this kind of criticism is impossible to defend against.

See my initial statement. All you have to do is point flaws in the above link.

> To prove that it's mostly bullshit would take me literally writing a book - in which I would surely make mistakes,

If you're not confident in your ability to assess and refute an argument, then why bother making it?

> that then could be used to discredit it entirely in a single article.

Nobody is saying the article above is perfectly written, or that the critique is 100% on point, but that does not mean the broad point he makes has no merit. Same would be true for the hypothetical book you write.

> When people read a powerful criticism "debunking" things about a group they vaguely know, the default for most is to agree with the criticism. For some reason it's natural to humans.

Do you have any basis on which you're making that claim? No, because if you did, you'd provide that.

> All I want now is to make people stop for at least a moment, consider that the article may be unfair, and to not make judgments before double-checking the claims.

But WHY? WHY? You've, objectively, given me ZERO reason besides "it's malicious and people are biased when reading debunking articles". You've clearly refused to engage in the content. You haven't even quoted a single line and proved that it's false. Whereas the article in question is an in-depth exploration of the community of people, their beliefs, the personalities involved, what they believe, their education background and many more things. What have you done? Nada.

I can go on and tear down your whole reply, but I'll stop here.I come off with the impression that you're taking this personally and therefore, as a natural response, you're defending it, which is fine. I'm not trying to be a dick, but perhaps you should work on your argumentation and logic skills before trying to defend or take any side.

Re: Bayes's Theorem: What's the Big Deal?

#238
post #227

Earlier quoted context omitted.

> That is to say, if you start with any prior, will enough additional pieces of evidence always let you converge on the truth? Yes, with two caveats. First, you can't have assigned zero probability to the right answer. Which means that if you have a probability distribution over hypotheses, and the right answer wasn't one of the hypotheses in the distribution, you're doomed from the start. The Solomonoff prior is a m…

The prior of Solomonoff Induction is a uniform distribution over the enumerable set of Turing machines?

Ah I dimly remember that it also has an Occams razor built-in, so the prior probability falls off with the lengths of the strings that describe the Turing machines?

Re: Bayes's Theorem: What's the Big Deal?

#239

Earlier quoted context omitted.

> If nothing else, this provides inspiration for me to quit procrastinating on my "ASK ME ABOUT ROKO'S BASILISK" novelty t-shirt idea. Can you tell us the story about that party when you got so drunk and started yelling in anger at a poor random dude? Except you weren't drunk at all and the dude behaved like an asshole, but nobody cares about the truth since you're a nerd and you look cute when you're sad that we're…

Can you unpack that strange analogy a little, please?

There was a thread on LW about potential information hazards[0] - in particular, a kind created by the special flavor of decision theory which was being developed there. This was one of the "peculiar out there" kind of stuff LW people like to play with. Here comes Roko, who says that he created a potential hazardous piece of information - a thing that if you know it, you're fucked - that could lead to people suffering, and then posts it right there. Eliezer deleted the comment, claiming Roko is being irresponsible (and wrong, but still irresponsible if he believed that what he posted was a hazard), and the topic of what became known as Roko's basilisk was banned from discussion for some time.

Eliezer's argument was that Roko behaved unethically by posting something he claimed to believe will hurt people who will read it. That's irrelevant to whether the post itself was an information hazard or not. Eliezer actually later claimed it wasn't, that Roko was wrong. But the whole situation ended up being used to prove the point that LW people are loonies who invent and believe crazy things.

Hence my analogy, in which one person is rightfully angry at another, but ends up being painted as having issues instead.

[0] - https://wiki.lesswrong.com/wiki/Information_hazard

Re: Bayes's Theorem: What's the Big Deal?

#240

Earlier quoted context omitted.

Yes, I see the problem you mention. All I offer is, as a person who spent some time hanging around that group but not exactly an insider, my honest assessment: this criticism is very unfair, very hurtful, and mostly bullshit. You don't have to believe me - but you now have a second data point for your consideration. I did engage with some points in comments below though, to show examples of this cherry-picking facts,…

> this criticism is very unfair, very hurtful, and mostly bullshit. You don't have to believe me - but you now have a second data point for your consideration. No I do not. All you've provided me is a point of view without anything resembling rational reasoning. I believe that trains can fly. You don't have to believe me, but now you have another data point for your consideration. > this kind of criticism is impossib…

You're reading me very uncharitably. I believe that debunking this article properly, point-by-point and with overwhelming evidence, will take stupidly big amounts of time and is almost an impossible task - since no matter what I say, people with the same approach as the author can find something else to twist into criticism. On the other hand, Googling quotes he uses and checking them with source material is easy and provides ample proof that the article is dishonest. It's something a reader can do, and I want to clearly state that in this case, they absolutely should.

RodericDay asked about three concrete examples taken from the article; each of them is a perfect example how utterly nonsense this article is. I provided relevant source material and explained the real meaning of quotes Bond uses when taken in context of said source material. So did other HNers. Check out the responses in the parallel subthreads. I could do it for every one of his sentences but frankly, I feel it's a waste of time. I think I've proven enough that this is not an honest criticism, and fact-checking the rest of that article shall be the task for the reader, who is now properly warned.

Post reply on HN