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official_techsupport

who/whom

2 followers   follows 2 users   joined 2022 September 04 19:44:20 UTC

					

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User ID: 122

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A limitation of usual Bayesian reasoning.

Scott is doing his annual subscription drive and I was reminded of a (still) private post of his I disagree with: https://www.astralcodexten.com/p/but-seriously-are-bloxors-greeblic

In my post on uncertainty around AI, I wrote:

If you have total uncertainty about a statement (“are bloxors greeblic?”), you should assign it a probability of 50%. If you have any other estimate, you can’t claim you’re just working off how radically uncertain it is. You need to present a specific case.

Commenters were skeptical! I agree this important topic needs more discussion:

And then he proceeded to list some of the objections and his objections to objections. The objection I'm personally most partial to was not listed, so I assume it's a sort of novel idea, at least in that (and this) community.

Suppose that in your travels you encounter a shady guy who offers you an opportunity to bet on the outcome of a coin flip. Nearby stands a yudkowsky, who tells you that according to his observations the coin is biased and the next flip is about 66% likely to land on heads. You know that yudkowskis are honest and good Bayesians, so you trust his assessment.

The shady guy flips the coin and it lands on tails. Now consider two possible worlds: in one the yudkowsky says that his new estimate is 50% heads, in another he says that he has updated to 65% heads. That's two very different worlds! It turns out that the yudkowsky has an important parameter: how many coinflips he has observed so far, and therefore how much of his estimation comes from the observations and how much from the prior, and for some reason he doesn't tell you its value!

Scott's assertion is correct in a narrow technical sense: in a world where the shady stranger forces you to make a bet at gunpoint, you are forced to use the yudkowsky's estimation and the yudkowsky is forced to use a symmetric prior that gives him a 50% probability of heads when he has not seen any flips at all yet.

However in the real world there's almost always an option to wait and collect more data, and whether you want to exercise it critically depends on the difference between "it's a 50/50 chance based on observing 100 coinflips" and "it's a 50/50 chance based solely on the prior I pulled out of my ass".

So what's going on I think is that people intuitively understand that there's this important difference and suspect that when Scott says that normally they should start with a 50/50 prior, he's trying to swindle them into accepting Bayesians' estimations without asking how sure they are about them. And rightfully so, because that's a valid and important question to ask and honestly Bayesians ought to get a habit of volunteering this information unprompted, instead of making incorrect technical arguments insinuating that the estimated probability alone should be enough for everyone.

Certain social policies are misguided attempts to ensure skin in the game.

Aristotle I think claimed that most vices correspond to the absence or perversion of some particular virtue. I reread Scott Alexander's review of Freddie deBoer's "The Cult of Smart" and it helped crystalize an observation that a certain kind of approaches to solving social ills is likely to be a perversion of the concept of having skin in the game.

Skin in the game is, basically, the idea that things tend to work out much better when people making decisions are also the people reaping the consequences than when they are not, because otherwise you get https://en.wikipedia.org/wiki/Principal–agent_problem and doctors doing lobotomies on the involuntarily committed and people forcing their politics on culturally different communities and the government spending taxes on catastrophically wasteful projects instead of letting people buy private services with their own money.

Now, Scott REALLY HATES public schools. Literally in CAPS LOCK. So it was kinda funny how he nodded sagely along with Freddie explaining how public schools don't really teach anything, commended his analysis that Montessori schools maybe aren't much better at teaching but at least they aren't DYSTOPIAN CHILD PRISONS, and so on and so forth, until the last part of the review where he COMPLETELY LOST HIS SHIT upon realizing that Freddie's solution is making everyone go to public schools and forbidding all alternatives.

I am so, so tired of socialists who admit that the current system is a helltopian torturescape, then argue that we must prevent anyone from ever being able to escape it. Who promise that once the last alternative is closed off, once the last nice green place where a few people manage to hold off the miseries of the world is crushed, why then the helltopian torturescape will become a lovely utopia full of rainbows and unicorns. If you can make your system less miserable, make your system less miserable! Do it before forcing everyone else to participate in it under pain of imprisonment if they refuse! Forcing everyone to participate in your system and then making your system something other than a meat-grinder that takes in happy children and spits out dead-eyed traumatized eighteen-year-olds who have written 10,000 pages on symbolism in To Kill A Mockingbird and had zero normal happy experiences - is doing things super, super backwards!

(this was when Scott already mostly calmed down by the way)


But Freddie's approach actually makes total sense as an attempt to force people to have skin in the game. The society is largely controlled by the rich and affluent. As long as they can escape to charter schools, catholic schools, or hire private tutors, they will do that instead of using their wealth and affluence to fix public schools, so those being horrible will remain solely poor people's problem. If we close all alternatives then it becomes everyone's problem and everyone has to solve it.

You can also see this approach in what is currently happening with the US justice system. America has a huge prison population and high rates of recidivism, which maybe could be solved by adopting the Nordic model of rehabilitative justice. But it's hard, it's much easier to lock up recidivists for decades, so that's what the system had been doing until roughly 2018, when a coordinated campaign had elected a bunch of progressive DAs in all major cities, who simply refused to prosecute a lot of crimes. Now with the crime wave affecting everyone people have no choice but to take rehabilitative justice seriously.

Most of desegregation initiatives also had this component to them (in addition to tolerance through familiarity I guess). As long as black people live in their own ghettoes and send their children to their own schools, rich and affluent people by and large don't care what happens there. But if you have gangs selling drugs in your kid's school and a crack den next door, you'll have to care about and fix the problem, right? Right?


Of course all such approaches range from simply not working to greatly increasing the harm they were meant to prevent plus causing other catastrophic consequences. Here's some reasons why:

  • Just because you incentivized someone to solve a problem doesn't mean they will be able to figure how. Some problems are very hard and you have to try to solve them purposefully instead of setting up incentives and hoping for the best.

  • Unless you want to live in a North Korea (and can bring it on), it's really hard to incentivize wealthy people to solve problems like that. They'll look at it, admit that they have no idea what to do about it, shrug, and move to another place. So attempting to overmilk that cow will leave you without milk at all.

  • You are not incentivizing the actual rich and affluent people, you're incentivizing middle class, which is not affluent enough to solve much. Or more precisely, it's the actual rich and affluent people who are doing the incentivizing and they sure weren't busing their own children to mixed schools etc.

  • Affluent people who end up in charge of solving social ills are usually ideologically incapable of solving them. For example, a school that has problems with drugs and discipline should punish and eventually expel troublemakers, but that's precisely the kids the progressive school board cares about the most, so it would demand that the parents solve the problem with discipline without disciplining anyone, at which point the wealthy parents will shrug and move elsewhere.

  • Or regarding crime: let's be real, most criminals aren't Jean Valjeans stealing a loaf of bread to feed their younger siblings, they pick $1000 worth of Gucci bags and go do drugs and have fun because it sure beats working a week at Walmart, and that's the truth. If you tell them otherwise they will laugh you in the face. If you ask them to think about the poor Gucci shareholders they will laugh you in the face. The only way to fix them is to promise them a reasonably long stint in prison, at which point our prison abolitionist decides that Gucci shareholders deserve it and secretly gives up on rehabilitation.


Is it possible to force people to have skin in the game in a way that works? Yes, you have to make sure that you're forcing the right people and they can't wiggle out of it. So regarding prison reform again: first we go to the nearest KKK Grand Dragon and ask him if he's willing to pay $30k in taxes to have an innocent black man imprisoned for a year. Having thus established that the vast majority of the society doesn't have real incentives against rehabilitative justice, we greenlight anyone who wants to test their theories about how to rehabilitate criminals--more particularly, we ask the same George Soros fund that elected progressive DAs to bankroll and vet these initiatives, to make sure that the obvious grifters are excluded.

The most important part is that we also pass relatively strict laws against recidivism, say, doubling the term every time. This really incentivizes the anti-prison activists to do their best job trying to rehabilitate their charges. That doesn't mean that they will succeed--that any of them will meaningfully succeed--but they will try their best, and what more can we ask for?

This way instead of making the society hostage to criminals and hoping that someone figures out how to rehabilitate them, we take the criminals hostage and incentivize them and their rehabilitators to succeed.

Looks like everyone here is no longer willing to give you any constructive feedback. Consider presenting your case on https://rdrama.net, some people might mock you, but at least you'll have engagement.

Use https://rdrama.net/signup?ref=2481 for signing up btw, I'll get a badge for referring you!

That's the difference between socialist and libertarian approaches I guess. A Libertarian seeks to reduce the scope of consequences of decisions to the maker of them. A Socialist seeks to increase the scope until everyone is affected including the people in power so they are forced to make decisions that are good for everyone else too. Or like everyone is forced to talk about it and make decisions that are best for everyone, because everyone's in the scope.

The brutality and cynical tactics that Hamas uses do lead to them having lower support than they would if they were less sociopathic though.

That's the weird thing though: their cynical tactics used to be launching rockets from hospital rooftops and parading the inevitable Palestinian corpses, or having Palestinian kids shot for throwing stones, etc etc. The grift has always been provoking Israel to violence and posing as an underdog.

But this, parading enemy civilian corpses around, is a diametrically opposite thing. It's something you do when you have several thousands of tanks ready to roll over the enemy capital, you expect to win, and you want to demoralize the enemy to win easier.

So I don't know, either Hamas expects Iran to nuke Israel, or the old guard that understood the nature of the grift all retired or something and the new leadership got terminally high on their own supply.

First of all, that's literally the first point in my list of possible explanations for why forced skin in the games fails in my examples.

But also I want to point out an important thing: I'd want a stable legitimately non-working solution. As in, imagine one of the more inconvenient possible worlds where we have implemented my proposal for solving recidivism, everything appears to work as intended, George Soros makes sure that the people he funds really believe in the cause, those people report that they get nothing but enthusiastic cooperation from the prison staff, and they keep trying protocols devised by the best sociologists and they can't get recidivism rate below 70%.

That world is pretty unfortunate, but it has one very good property: whenever someone says "hey I think that you people are doing rehabilitative justice wrong, we should abolish prisons and replace it with mutual support communes, and for starters let all recidivists out on no bail" we tell him that there's currently three pilot mutual support communes, he's free to join any of them as staff and try to do rehabilitative justice right, but no, no way no how we are restarting any of those catch and release programs. If his ideas work, they work, yay, he solved an impossible problem, the criminals don't reoffend and are not affected by our harsh recidivism laws. If not, too bad, but at least the society is safe.

It's important that if the solution doesn't work the society can be reasonably sure that it's because the problem is very hard and not for the lack of trying.

To be fair complaining about lawn aesthetics is just as bad as adoring lawn aesthetics. Same goes for reading all that shallowness and unwarranted feeling of superiority into people you never met, vs being that shallow etc. A house like in the picture is perfectly suited for reading Dostoyevsky in, and that's the important part, no?

I also don't think that there's a problem that warrants a solution, much less a centralized solution. If someone figures out how to use resources more efficiently without compromising much more important aspects of life with their "part and parcel of hustle and bustle", let them try it somewhere! If it works, people will come and other places will emulate it! If on the other hand you operate under an assumption that people are deluded about what is best for them and must be forced into correct living conditions with an iron hand, it's overwhelmingly likely that it's you who are wrong.

On the latter note, in my experience there's an inverse relationship between the quantity and quality of interactions with neighbors and population density, in terms of inviting neighbors to your birthday party or a random bbq, vs not knowing who even lives in the apartment next door. Like, you might think that people living in separate houses naturally become a sort of haughty recluses shunning human contact, while people forced into a sort of human hive naturally form vibrant local communities--nope, for some reason it's the exact opposite in my experience.

I don't know why, maybe it's because a separate house on its plot of land is much more self-sufficient in certain senses, you don't just sleep there, you hang out there in the evenings and on weekends, your kids play there and around there, stuff like that, so naturally you interact with the neighbors all the time. While if you live in a pod and have to go to do all other activities in other designated areas, you just don't get many opportunities to interact with your pod-neighbors.

Your hypothesis is stupid. It’s needlessly complicated, and paints your enemies as both naive and devious. Why should activists expect results from foisting “the problem” onto an unwilling majority?

Because then the majority has skin in the game and has to deal with the problem. It's naive and usually doesn't work, but if you totally expect it from deBoer, why not from other activists?

Is desegregation really worthless except as a means to an end?

I never said or implied that. But you're conflating two very different things: all the stuff that MLK mentioned, let's call it "negative desegregation", meaning that black people are no longer prevented from being in white spaces, and "positive desegregation" that actively tries to mix up communities, such as busing (read https://en.wikipedia.org/wiki/Desegregation_busing btw, it was an unmitigated disaster opposed by everyone involved expect the actual rich and affluent whites). Can you give me your best pro-busing steelman? Because I'd put making whites have skin in the game wrt education quality on the first place, tolerance through familiarity on the second, and aesthetic preference for de facto desegregation as a sort of a strawman (though no doubt real) justification.

Same for the Soros DAs. I'm not saying that there were devious conspirators planning to have a crime wave, I'm sure that they hoped that there wouldn't be a crime wave! But don't you think that it was very weird to do things in the opposite order to what I proposed? Like, first you figure how to prevent criminals from reoffending, then you go soft on reoffenders because they won't reoffend yet again? If you go soft on reoffenders first, what exactly do you expect? Is "uh I hope someone also figures how to prevent recidivism now that they are forced to" painting my enemies as more stupid and evil than "idk I don't give a fuck lol"?

I totally disagree with the conclusion. First of all, we are literally living in the time where one man's vision is about to revolutionize space travel by making a rocket that can lift 100 tons of payload to LEO. Yeah it's interplanetary for now, but why not interstellar next, maybe by the next man with an itch for it?

And second, why do you need to persuade the whole society to migrate? Most of the old world people didn't migrate to America and it was their loss. The few people who did migrate multiplied and prospered. "Indirect evidence of extrasolar planets will never be enough" -- for whom? So we will have bootlicking statists like the author waiting for the government to give them credible evidence and orders to go, while adventurous types will be populating the galaxy.

Marxbro was a troll by the way. At one point we had a discussion about the Labor Theory of Value, I tried my best to steer it away from theorizing and keep to a concrete example of some guys on an island exchanging fishes for pots etc, and eventually he had enough and basically said that no, he didn't want to explain this or that, he was doing it to get a rise out of people like me. Or at least that's how I remember it, it was, what, five years ago? But yeah, my impression was that he let the mask slip.

Of course, in words of a Chinese poet, if you pretend to be insane and tear your clothes and run into the garden, are you actually pretending, which also applies to single-mindedly "trolling" an internet forum for years.

They are making correct arguments that fail only in a very small subset of problems, those with information acquisition that is affected by the decisions.

I disagree that this is a very small subset of problems, the majority of real life problems let you decide to wait and collect more information or decide how many resources you're willing to bet. See examples in https://en.wikipedia.org/wiki/Multi-armed_bandit

For example, I think I first noticed this problem many years ago in one of Scott's linkdumps where he disapprovingly linked to Obama saying that CIA told him that such and such thing had a 70% probability but really they had no good information so it was a coinflip. And Scott was indignant, 70% is 70% what more do you need to know before you authorize some military operation, even the President doesn't understand probability smdh. In my opinion Obama was right, if technically imprecise, while Scott was wrong, which demonstrates the danger of having a little knowledge and also the need for more awareness.

is not easy to communicate succinctly.

You say this as if it's not Bayesians' fault that they have not developed (or got into a habit of using) a succinct way of conveying how much of the estimate comes from the prior and how much from the previous updates. I would understand if it was an acknowledged hard problem in need of community's attention, but for example Yudkowsky sequences don't mention it at all.

My cats clearly don't understand how doors work.

They don't even understand that I open doors. One has learned that if she stands with paws on the door and looks at me and meows then the door opens sometimes, but I'm really not sure that she understands that it's I who opens the door, she just knows that "the door's open" tends to happen after "meow near the door". She doesn't understand "push on the door" leads to "door opens", I checked.

How would something like that work for humans? I mean, is it possible to imagine beings that are so above us as we are above cats and who affect our lives in meaningful (open doors etc) but incomprehensible ways? Like I have a literal guardian angel, I pray to it (like my cat meows to me), and then somehow things work out better for me, in an incomprehensible way. How could that work? How could an angel "opening a door" for you appear to a human?

The real question we are interested in: "we can have an intervention that would make this black man a productive member of society that you don't even have to pay for, or you can pay $30k/year for decades until he grows too old to do crime".

And because rich people are there it is clean and safe.

I doubt it. You don't have to be rich to Uber/Bolt everywhere. In fact by the time you can actively shape what the public is allowed/encouraged to vote for you can have a private driver.

To be honest I don't know why American cities appear so dysfunctional while other places do just fine, when I don't see how the decision-making is remotely democratic. Or maybe it is democratic but ordinary urban Americans are way more brainwashed somehow. I don't know, I know that where I leave we have very nice and cheap public transportation that is used exclusively by people who can't afford cars, but it's nice because it has these social ads playing, telling that if there's some smelly hobo (literally the ad is showing green noxious fumes!) you should immediately call the police and they will remove them. Which they do and if any politician tried to run on the platform of not infringing hobo rights, they would be laughed at by everyone.

Scrapes and cuts, especially scabs, itch too.

It's not comparable at all. A cut doesn't begin to itch until after several days, and don't itch at anywhere the intensity proportional to the affected area. Needle pricks don't itch at all and they are tens or hundreds of times larger by area than mosquito bites. So no, it's evidently a reaction to the anesthetic stuff they inject.

Why do mosquito bites itch?

Is it entirely accidental, as in, evolution only cared about whatever stuff mosquito inject acting as an effective anesthetic for the duration of the bite, not about what happens next? Or maybe it's beneficial for humans (makes us much more alert and aggressive towards further mosquitos) or maybe even individual mosquitos due to intra-species competition?

There's a thing however: the most vocal Holocaust deniers are also very very stupid. I remember arguing with one on this forum and he genuinely didn't understand how fire works, like he couldn't understand that it might be hard to ignite something but after you got it burning it keeps burning if that releases much more energy than is required to evaporate the stuff. That was in the context of whether you could burn a bunch of human bodies in open air with a minimum of external fuel or do you just multiply the amount of fuel modern crematoriums use to burn a single body to ash by the number of bodies. For the record, IIRC my back of the napkin calculations produced like 10MJ/kg released and 2MJ/kg required to evaporate the water when burning a corpse. The holocaust denier never engaged with these numbers.

If you could be teleported to the past and talk to Neanderthals about fire, they would understand it better than a modern day Holocaust "revisionist". Idk, maybe Australopithecs and Denisovans too. Holocaust deniers are inferior to literal subhumans intelligence-wise, and trying to discuss their arguments with them is a waste of time. I tried it again and again just to make sure and no: they are all very very stupid, that's all there is to it.

Everyone in the USA still believes that the USA is the first etc etc. The only thing that matters is the domestic response to foreign posturing. "I'm against America First" is a viable posture in America because nobody in America really believes that America could be anything but first.

Most disagreements of note—most disagreements people care about—don't behave like the concert date or physics problem examples: people are very attached to "their own" answers.

There could be other reasons than hidden motives for that. Consider for example that one of the largest debate here recently was about a completely hypothetical situation involving red/blue pills. Or imagine a technical discussion about some software engineering problem, those can get quite heated too.

So, first of all, sufficiently complex problems tend to be like icebergs, with only a small part being easily communicable, and a lot of underwater assumptions, connections, and intuitions that are personal to you.

For example, if the concerts at that place are always on Thursdays which I know because I'm a regular there, and you have never been there before, I'm sure as hell double checking your claim. Or if your answer to the physics problem is not just different from mine but doesn't make any sense given all other stuff I learned about the problem while working on it, I'm likely to start by asking pointed questions about those discrepancies instead of humbly assuming that one of us just made an arithmetic error somewhere and that could as well be me. And of course in case of software engineering, "your approach is going to suck, I feel it in my bones as a result of decades of experience that I can't just spend years relaying to you here"...

Second, that last example doesn't fit into your model even if it does have an underlying conflict of interest. I can 100% honestly believe that my approach is superior for complicated reasons I can't articulate convincingly enough, and I don't want to waste my time implementing your inferior solution, while you honestly believe and feel the exact opposite. So that seems to be a conflict of interest, but we both can easily be 100% open about it because it's actually driven by a factual disagreement.

That's not to disagree with your main thesis, that there's a lot of "bad faith" arguments, so much that it becomes a counterproductive label. But you're both too optimistic and too pessimistic about that, because there's also a lot of hard to reconcile factual disagreements.

Or maybe it was just about stirring up enough heat that the Israel-Saudi normalisation doesn't happen. I dunno.

I don't see how this was supposed to work. A small terrorist act that causes Israel to respond disproportionally, all right. 400 paratroopers killing Israeli civilians? Again, this is a thing that you do when you have 5000 tanks ready to roll towards Tel Aviv and you want to show your potential Saudi allies that you mean business. They don't have a single tank. Saudis will be like, fuck those idiots.

By the way, "Mother of Learning" author wrote 3 "alternate-universe" chapters for it and started a whole new series, the first chapters of which hooked me hard: https://www.royalroad.com/fiction/71045/zenith-of-sorcery

@TheDag

Static isn't really a concern where I live, it's far too humid.

It's not static electricity, it's a bunch of energy stored in capacitors. It's real as you can see by unplugging the computer, then trying to switch it on -- the fans briefly start up, at least for me. But after that it should be mostly safe, if in doubt poke with a grounded screwdriver or something.

How do I know that "bloxor-1 is greeblic" is elementary, if I am totally uncertain about this proposition, and I don't even understand the terms?

Skill issue.

What do you mean "correctly"?

That I, doing Bayesian math about some bets against you, will leave you poor and destitute in the long run, unless you're using Bayes too. What do you want to use instead of Bayes for the record?

the Allais paradox

My point is not that the poors are always instinctively right. My point is that they have well-honed instincts for when someone is trying to take advantage of them, and the usual Bayesian reasoning like the above rightfully triggers it, even if they don't have the concepts or the introspection to communicate to us what was that, that triggered them.

My point is that a Bayesian megamind is entirely justified in asking the yudkowsky what fraction of his prediction came from the data, and basing his bet amount on that, and grumbling about the yudkowsky being useless if he refuses to answer.

Nobody actually has arguments against assigning a symmetric prior to a coin bias

How many of the arguments in probability theory have you read to come to this judgement? Because I can think of large parts of the literature dedicated to exactly this point.

Huh?

That was one of the objections listed in the post, Scott's response was that you should only be neutral about elementary propositions, not about compound ones ("bloxors are greeblic AND bloxors are grue").

I personally think that this entire kind of objections can be dismissed by pointing out that Bayesian math works correctly and without contradictions, and when looking at actual priors there's not much disagreement about how to choose them either, in practice. Nobody actually has arguments against assigning a symmetric prior to a coin bias, or even can muster a lot of enthusiasm to argue that you should use a gaussian instead of a uniform prior.

People get hot and bothered when they feel that someone tries to hide how much information they have actually updated on and how much is their prior.

I said:

Most of desegregation initiatives also had this component to them

And again, steelman going above and beyond letting anyone to go to any school they want and forcing them to go to a racially diverse school.

Combine it with a sense of justice, and you have an adequate explanation for people trying things like busing.

You will have to spell it out for me, I don't have none.