All of tadrinth's Comments + Replies

I'd be interested to know how many people flunked out of that internship because they couldn't pick it up, and to what extent people were pre-selected for the internship based on some estimate of their ability to pick it up.  

3SarahNibs
Gonna guess zero. Much less costly to leave 'em in for 12 weeks for goodwill than to try to remove people in that timeframe. Good point. Probably at least some of this. You need referrals, and I was definitely not the smartest of the people in my reference class available to refer, though maybe 3rd, and someone looking at me versus the one I know definitely had more-raw-IQ should definitely have guessed that I was more likely to pick up that particular thing.

This would mean that a hypothetical AI "uniformly" gaining capability on all axes would beat us at math long before it beats us at deception.

I'm pretty skeptical of this as an assumption.  

If you want an AI to output a useful design for an aligned AI, that design has to be secure, because an aligned-but-insecure AI is not stably aligned, it could be hacked.  Ergo, your oracle AI must be using a security mindset at superhuman levels of intelligence.  Otherwise the textbook you'll get out will be beautiful, logical, coherent, and insecure.  I don't see how you could make an AI which has that level of security mindset and isn't superhumanly capable of deception.

Razied120

So, first, given an aligned-but-insecure AI, you can easily make an aligned-and-secure one by just asking it to produce a new textbook, you just have to do it fast enough that the AI doesn't have time to get hacked in the wild. The "aligned" part is the really super hard one, the "secure" part is merely hard.

And second, I think that this might be like saying "Bayesian updating is all you ever really need, so if you learn to do it in Domain #1, you automatically have the ability to do it in unrelated Domain #2". While I think this is true at high levels of ... (read more)

I've been attempting to use IFS for years without having read much more than brief summaries of it. This post put me on a much firmer footing with it and I was able to much more clearly categorize a bunch of things that have been happening over the past six months or so. Then over the weekend I had a low-level background internal screaming going on, and while my first couple rounds of attempts at resolving it only helped a little, I was finally able to isolate the issue and fix what turned out to be a massive misalignment. I have not felt this aligned in years.

So thank you very, very much for writing this.

4Kaj_Sotala
Whoa, glad you found it that useful! Thank you for letting me know. :) I do recommend reading at least Self-Therapy too, it mentions a number of details which I left out of this explanation, and which might be useful to know about when addressing future issues.

For the specific case of weighing yourself, could you create a scale that only gives the positive reward, not the negative one? Like, it only tells you your weight if it's lower than yesterday, or better yet if the trend in your weight is downward over the past week? Maybe it displays a cheerful message and plays a soothing sound when you weigh yourself, and it emails you later at random if you've been losing weight.

2Conor Moreton
Yeah, those seem like ameliorative measures that are likely to help the brain adopt better goals beneath the hood.

My fiance likes it, supposedly it's been very true to the original manga. It might just be better than the original dub.

0Jiro
According to anncast the later seasons of Crystal have gotten better.

At this point, I won't be confident that i've been successfully preserved until ultra high resolution electron micrographs of my brain are in Amazon's S3 storage, replicated across multiple regions. Any storage that doesn't have redundancy doesn't count as safe.

tadrinth190

Is Austin on the list? I work at a not-evil tech startup called SchoolAdmin that does school admissions software for a mix of public/private/charter schools. We're not hiring devs right now, but that might possibly change since we have a product manager coming in October. The company is REALLY not evil; we've had three different people come down with mental or physical health issues, and the president's mantra has been 'your job is to get better' in every case.

I could possibly also offer a place to crash, I've got a futon, a study it could be moved to, and already have cats.

2btrettel
I would recommend Austin as well. There are loads of developer jobs here, though I don't know any particular place that is hiring right now. We have an active, close-knit rationalist community that I think is pretty fantastic. Worth consideration.

Body armor only protects against weak curses like Somnium that are standard first year hexes. Stupefy, which is castable by first years, is not blocked by armor.

1RolfAndreassen
I think you are rather missing my point, here. The body armour that Muggle Britain would invent would not be the kind available to Harry as a desperate improvisation. In a year or two, after a crash research program, Muggle Britain would understand how magic works, what materials block it, and would mass-produce the resulting body armour that does block curses up to and including Avada Kedavra. It would be based on tinfoil because everyone knows that tinfoil hats block the government's mind-controlling rays.

He got Lucius to agree to proposed next steps which we don't know about and secured an alliance with House Malfoy.

Also, when he added the bit about exonerating House Malfoy, he showed Lucious one wording, then wrote down his original wording. He might have changed something important, and Lucius might not have noticed.

8Benquo
That seems like exactly the sort of thing Lucius Malfoy would be sure to notice, and even if it weren't, it wouldn't be worth the risk.

Any chance you can refactor your recipe to replace bananas with something that keeps better? Otherwise, I was pretty pleased with it.

2OrphanWilde
There are also a substantial number of people (read: anyone with a natural latex allergy) who could have an allergic reaction to bananas...
3RomeoStevens
the main point of the banana is that for whatever reason it suspends the oat and seed particulates in the solution so they don't all sink. You might get the same effect if you use sunflower butter instead of seeds. Oh and it's also really hard to add marmite without something to smear it on. You can replace the potassium from the banana with more KCl but at some point it starts to affect taste. Edit: you can also try prunes for the potassium content, but I have no idea how well that will work. They keep very very well, to the extent that powdered prunes are sprinkled on other foods to make them last longer.

I just made my first batch of this and it was pretty decent. Not amazing, but definitely palatable. I had one big cup in place of dinner; I expected to want more but it was surprisingly filling. I started with the base recipe and added a scoop of vanilla whey protein, plus about a quarter cup of frozen chopped spinach.

I was expecting to have more issues with storing or measuring out the frozen OJ concentrate, but I just opened it, scooped some out with a spoon, put the lid back on, and stood it up in my freezer.

1RomeoStevens
Thanks for the review. My impression of the taste is biased since I drink it following fasted training.

I finally started brushing regularly when I finally tried an electric toothbrush and began brushing immediately after I showered at night.

I tried Metamucil packets a while back to help alleviate side effects of the antidepressants I was on, and the trick with those was to drink them reasonably quickly after you added water, before they turned into gel. With the single-serving packets, you could try adding the fiber right before drinking.

I was browsing through discussions of that blog post on reddit, and someone pointed out that his formula has inadequate fiber. One batch has 1500ish calories from macronutrients (carbs/protein/fat), and only 5g of fiber. The daily recommended intake for fiber is 38g per day for an adult male, so if you're only consuming Soylent, you'll want to increase the fiber per batch dramatically.

3beriukay
You're absolutely right. I've had a spot of trouble finding a source of fiber that won't expand and turn my version of soylent into a gelatin.

It works great. I mentioned wanting a standing desk to my boss when I started a month ago, a couple of other people expressed interest, and he bought four of them, including one to use himself. It sits on the desk that's built into my cubicle, my laptop sits on the shelf, and the monitor sits on top. The boss had to send someone to IKEA to get another four.

We might need to get higher cubicle walls, though.

0Sabiola
I've decided not to do it after all. The cat couldn't sit on my lap, and I love it when she does that.

Switched to a standing desk at work. I have one at home and I mentioned the idea to my boss. He eventually found a post where the right $22 at IKEA lets you build a desk -> standing desk converter. It's basically an end table with a shelf screwed to the side; since you are making the screw holes yourself, the shelf is at whatever height is ideal for you. He decided to try it out also, along with a few other people, so we shall see how the grand experiment goes.

It's been a few hours and I have already discovered that standing for long periods in te... (read more)

0shokwave
Consider taking off your shoes and standing on a folded yoga mat; I find that comfortable.

I was on an SSRI so I'm not sure any of my experience is actually relevant to bupropion.

If your depression has an obvious cause, fix that instead. I was depressed because of grad school, and I got better when I graduated.

Are you sure you're not just building up a resistance/dependence? I tried anti-depressants but they eventually stopped really doing anything, I believe somewhere between 6 months to a year after starting them. I think resistance is pretty common.

Also, most anti-depressants take a while to kick in, so I suspect any day-to-day dosage changes are going to be more about withdrawal symptoms than anything else.

0David Althaus
Yeah, increasing tolerance is probably one of the main factors. But I thought I could counter that with the doubling of the dosage. Yup, I guess it's likely that the negative day-to-day effects were mostly withdrawal symptoms. What do you recommend? Just not taking antidepressants for a while?

Yeah, memory is fallible as hell. This is why I love having conversation logs and why I have contemplated trying to figure out a way to log my entire life (so I could do that for real conversations as well).

2SkyDK
It'd be illegal in most countries, but getting very small mics is not that hard. I've used it myself for testing if I had a better idea generation state of mind while running/doing sports than when penning.

It takes her a few seconds to remember the Asch Conformity Experiment and that was a long enough delay to be frightening.

1Percent_Carbon
Perhaps she is only ridiculously exhausted, low on brain juices. She is not used to being low on brain juices because she has never been either undernourished or pushed so hard. It is a novel experience, which can be frightening.

Wizarding society likes to let people figure out the dangerous secrets for themselves. You don't tell people the dangerous secrets until they have proven themselves on the easier ones, you don't tell people the secret of potion invention because they might get turned into cats, etc.

Of course, Harry can violate that as he pleases if it is just a social convention, and Harry's guesses at principles seem\ to hold up far better than it seems like it should.

Neville is the most likely next target for an attack intended to separate Harry from his allies. Voldemort is probably too clever to try the same trick twice, though.

On the last point: Hermione almost certainly was false memory charmed twice; H&C would have removed the memory of their final conversation and replaced with with something innocuous at the same time as he implanted the false memory of casting the blood-cooling charm, so as to not leave a suspicious gap. He might also have implanted false memories immediately after the groundhog day attack, either to cover up the time gap or to not have Hermione wandering around with an extremely suspicious memory in her head (If Dumbledore or Snape had seen the memory of H&C, or his less-creepy disguise, they probably would have been fairly suspicious).

tadrinth270

I'm not sure if anyone has commented on this, but I just noticed it while rereading the Self-Actualization chapters:

Hermione went to tremendous lengths to be her own person rather than just something of Harry's, including becoming a general and fighting bullies. Now she has sworn herself into Harry's service and house forever. That is really sad.

1TuviaDulin
That's only a legal formality, though. Harry hates the wizard society and wouldn't use its laws against her, and he'd discourage others from acknowledging it. Still, Hermione (unlike Harry) cares what others think of her, so being surrounded by people who act as if she belongs to Harry is going to hurt her.

The dementors serve at least three purposes in Azkaban: they drain the magic from prisoners to render them helpless, they notify the guards when prisoners escape, and they chase down and incapacitate escaped prisoners and intruders. If Harry destroys 90% of the dementors, there probably won't be enough left for the first or third purposes. That would make Azkaban much less secure, and the perception of Azkaban's security would go down if there are hardly any dementors since the dementors are what make it infallible. Even just demonstrating that Dementors CAN be destroyed would probably force them to completely remake Azkaban to not depend on the dementors.

3loserthree
They also stay in Azkaban, instead of being everywhere else.
tadrinth-10

The dark side is presumably the result of the botched Horcrux creation ritual and is in some way an aspect of Voldermort's mind or soul. An AI might have different modules for emotions and computation, but a human mind is not so cleanly separated.

Ah, but Harry doesn't intend to kill Dementors in particular, he aims to eradicate death itself (destroying them indirectly) and he is NOT confident that he will accomplish that in his lifetime. A Dementor that pisses off Harry dies immediately, while a Dementor that doesn't will only die if Harry lives long enough to succeed.

Email sent!

I think people would appreciate knowing that they might still have a shot even if they haven't heard anything. You could maybe ask Eliezer to put a note that you're still wading through applications in his next HPMOR author's note. =P Otherwise, I think a mass email would not be too annoying to those who have already heard from you and very much appreciated by those who haven't.

Yeah, the early stuff in Jaynes is pretty comprehensible (the ideas are clear if not all the proofs). Intro stats classes tend to be very light on the proofs, though. They're very much "here's probability", not "here's why probability". I'll definitely reread Jaynes again before teaching, but I want to finish Bolstad and work through some of the problems before that.

I do need to read up on those; Jaynes talks about the implications of Cox's theorem but doesn't go into it directly, so I'm only vaguely familiar. Thank you for the reading suggestions. I did plan to talk about those issues in the introduction of the course. Bolstad has an intro section justifying the Bayesian perspective, as well.

I think I picked that particular set of justifications because educators in general don't care about mathematical proofs, they care about what will be useful for the students to know how to do; in biology, the point of knowin... (read more)

This paper consists of some vague simulations, followed by wild speculation. I'm pretty sure it's bunk (speaking as a computational/cell biologist). It would be pretty easy to test, as well, as disrupting microtubules AT ALL would completely destroy memories if he is correct.

Here's another idea: Draco uses his Patronus to tell the assembly he forgives the blood debt. Harry can use his own Patronus to beg Draco to do this.

7DanArmak
Draco doesn't have authority to forgive it on his own. The blood debt is said to be owned to the House of Malfoy, and Lucius is Lord of that House, and Draco is a minor. Besides, Draco would never antagonize and publicly embarrass his father that way. Draco is also very angry at Hermione himself, now.

If "A potion spends that which is invested in the creation of its ingredients." then what the heck goes into an Animagus potion? Something that's been transfigured a lot?

Edit: It doesn't seem like the method for becoming an Animagus is described in canon, so the potion aspect might be new to MoR.

0glumph
Maybe just part of the animal?
0pedanterrific
Metamorphmagus hair? No, that would be Polyjuice, wouldn't it... huh.

If potion invention is slow, Harry must have gotten the light potion from a book, since I don't think there's enough time between battles to do serious potion research safely between classes and homework, even for Harry's 30 hours a day. If he can invent potions that fast, he potentially has a huge number of instant win conditions available (that's what I really meant, that rapid potion invention would be a huge pain in the ass to write around). I think at this point it's clear that Harry probably does know enough to invent potions, but not without probably months or years of experimentation per new recipe. If he didn't know enough to be dangerous he wouldn't have freaked out Flitwick.

Harry comments at some point that "He'd noticed the correlation between the effort Professor Quirrell expended and the time he had to spend 'resting'." (74)

Harry notices after Azkaban that Quirrell looks older (65).

What I meant was that it seems like Quirrell has spent more and more of his time active using his body as little as possible. Maybe we've just seen it more because he's hid less from Harry? In the most recent battle he talked and made the tiniest possible shrug but otherwise didn't move at all. When he was grading papers he did it purely by magic as well. Whenever he can let his body sit around and not move, he seems to try to do that.

4sketerpot
That could simply be Quirrell looking very tired and worn out, like he had just run a marathon while watching Grave of the Fireflies. It's fairly common to describe someone as looking older in circumstances like that.
0gwern
Mm. Maybe. Not very strong evidence either way. If it's meant to be a plot point, I would expect it to be telegraphed more strongly.

My theory is that potions which don't involve magical ingredients are obscure because they're usually less powerful and because they require a greater investment of energy from the creator to do the reshaping (explaining why Harry doesn't do very much in that battle). Given that Flitwick and McGonagal had suggestions of books to make at all after hearing what Harry wanted, it seems very likely that such potions do exist, just not in the standard textbooks. It seems very likely that Harry got his potion out of a book, because potions research is dangerous and presumably very time consuming, and because Harry with the ability to invent potions would be powerful enough to wreck the story.

1staticIP
Harry with time travel would be enough to wreak the story. Harry with an invisibility cloak would be enough to wreak the story, Hell, harry with rationality would be enough to wreak the story. That is, unless the other obstacles were ramped up to deal with it. Give Harry a time turner and enemies clever enough to know how to check on him. Give harry an invisibility cloak but add spells that can detect the presence of a deathly hallow. Give Harry mastery of potions but make creating them slow or just plain difficult.

The catatonia appears to be getting worse and worse over time. Channeling strong magic through Quirrell accelerates the decay. I suspect he'll crap out as a host by the end of the school year, and that's with Quirrell being reasonably conservative of his energy.

0gwern
Worse? What makes you say that? We seem to be seeing ever more action on his part, I actually would have said: from the Azkaban duel to his commentary in battles (and setting them up too) to his casual displays of sheer power/skill in the interrogation of chapter the last.

I'd like to point out that after Azkaban, when Quirrell tries to talk Harry into his next plot, Harry refuses by citing what Hermione and Draco would say. Quirrell sits there and thinks for a really long time, and asks if Harry really cares about what they think. My guess is that right then and there is when Quirrell decides to take them out.

What evidence is there that H&C isn't just Quirrell wrapped in an illusion?

There's no need for Hermione to have cast the lethal hex. She wins the duel, then the real perpetrator stuns both of them, hexes Draco, and then memory charms Hermione into thinking she did it. However, if that's the case, unless the perpetrator then used Hermione's wand to cast the hex, checking what spells her wand had cast would reveal something fishy.

Why are we proposing the H&C is not clever and powerful?

-1shokwave
Slips and mistakes H&C has made point to incompetence.

The terms of the challenge state that she can't tell anyone about it before or after the duel or it goes to the Wizangamot. So, no, presumably she can't tell Harry about it.

Heck, she might have severely injured Draco by accident, rendered basic medical care, and then just left, because she can't tell anyone. If someone found Draco unconscious and half-dead later, and they figured out Hermione did it and left him, that would look like attempted murder.

7Joshua Hobbes
Oooh, now that's interesting. If mentioning the duel means she automatically gets declared guilty as per the Ancient Rules, it's going to be damned tricky to walk away from this.

Especially when the person in question has been fighting a lot of bullies lately AND is royally pissed off.

It's possible that H&C never did figure out an effective lever. In that case, he might have given up on Memory Charming her (requires the target's defenses to be lowered, at least in the case of an experienced Auror and possibly for a very pissed off first year) and just oblivated her. If he'd managed to memory charm her, I don't think she'd have been so freaked out. She also wouldn't have 'lost track of time', she'd have had a perfectly reasonable legitimate excuse put in place.

Also, have we seen Quirrell use Legilimancy at all? If we have, that's an argument for H&C not being Quirrell, because if you've thoroughly read someone's mind you it shouldn't take that many tries for a groundhog day attack.

tadrinth-10

When you're going to Obliviate the target anyway, there's little downside to letting some frustration slip through. I don't think that necessarily counts as a screwup.

I think you would need a remnant of the destroyed dementor itself, not just a cloak a dementor happened to be wearing when you killed it, and I don't think dementors leave anything behind when you kill them.

The fact that the light was impossible to Finite suggests that Harry did tap the energy of the acorns. It's implied that the magical cost to the creator of making a potion is a minor cost to reshape the components. So, the potion taps the light stored in the acorns, and Harry's magic is tapped only to do the reshaping. Probably most magical potions use the magic of the magical ingredient to do most of the reshaping work, so the user only has to invest a tiny bit of magic, while a potion not involving any magical ingredients might require much more input... (read more)

3Xachariah
The Finite charm was trained to be used en masse by an entire army. It's a brute force spell requiring lots of power to dispel it's opposing spell. The usefulness of the sunlight potion wasn't in it's raw magical strength, but how quickly it disabled it's opponents. He entertains either option, but he chose the more risky one that immediately finishes the battle. It merely needed to stand up to a handful of Finite spells, rather than a massed and coordinated dispel. I say it is the more risky one because he did in fact lose by choosing this option instead of brewing an invulnerability to sleep potion. If he could have chosen to make potions of any potency, he would have obviously chosen a certainly victorious spell of a risky spell. This is evidence towards him putting in the magic himself. In order to deduce the stirring pattern, he looked up a potion with the similar ingredients and the same spell function from a preexisting recipe. If potionmakers could make the same potion using non-magical ingredients, then why wouldn't any of them have already invented a potion with nonmagical ingredients unless there was a significant drawback?
tadrinth100

Just because every potion in the two textbooks Harry looked at involved magical ingredients doesn't mean all potions require a magical ingredient. As I read it, Harry found the potion he used in a more obscure book suggested by Prof. McGonnagal or Flitwick, probably something like a wilderness survival guide. Converting acorns into a beacon would be pretty helpful for getting found by search parties.

Does that include biology? If so, I will be rather annoyed that no one warned me.

0[anonymous]
I polled three Ph. D. biology students and they had mixed opinions.
tadrinth-10

If you go straight from undergrad to a PhD program, you won't have a Masters on record, which means you'd have to drop all the way down to applying for bachelor's level positions.

Plus which, if you're not going to leverage the PhD, why would you spend an extra four years of hard work and low pay to get it? Just get a Masters instead.

4Eugine_Nier
In a lot of fields having a Masters without a PhD signals that you couldn't handle the demands of getting your PhD, and is worse then not having a Masters at all. Or, as they say "If at first you don't succeed, cover up all evidence that you tried".
tadrinth110

Having a graduate degree somehow makes my resume look less attractive than just having an undergrad.

In many cases you have to pay PhDs more. If you can find someone who can do the work who doesn't have a PhD, you save money by hiring them. In many fields, there is much more need for people to do Masters level work than to do PhD level work, so there are more jobs available at the Masters level.

grad or professional schooling can be more time/effort/work than it's worth.

A PhD in biology in the program I mastered out of involves working anywhere fr... (read more)

0Jayson_Virissimo
As far as I know, there is no law (in the US or Canada) that requires you to mention your graduate degrees on your resume. It isn't fraud, it is merely incomplete (like every resume is necessarily). For instance, I attended various community colleges while in high school, but only list the university I graduated from on my resume.
0Matt_Simpson
I'm in a PhD program and this is a bit worse, but similar to my own experience, however, there's significant variation along the personality axis. If you're the calm and collected low stress type, then grad school probably won't affect you nearly as much.
0roystgnr
To reinforce tadrinth's comment: even if a PhD were to offer to work for a BS salary, employers would have to ask why. Is it because the PhD knows their work quality is that far below their peers? Is it because they just want a job to "tide them over" while they search for a better paying offer elsewhere? On an unrelated note: When planning for the future you need to consider stupid central planners as carefully as smart computers/robots. PhD employment rates have seemed happily immune to the present economic troubles, but the next round of trouble is going to come when government budgets revert toward equilibrium, and that process may be particularly hard on jobs which closely depend on government funding.
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