skysight-inc/HackerNews huggingface dataset:
The Edeka (german brand run by a cooperative (sic!)) at the Munich railway station switched to this system some time ago. It is not very usual in Germany, because you need security personnel anyway in the shop, so what gives. In the end they switched back because long queues were building up because it took so long and they needed extra personnel to help people with the interface. It was a nice try but didn't work. I know from other cities (e.g. Zurich) that it works fine, but they also need about the same number of people as before because someone has to fight off the shoplifters anyway.
Or they can just ask? I would have no trouble helping my son work around dumb rules. "Here's another one of those situations where lying is appropriate. I hope you're learning to be a good judge of when it is and isn't. Yes, adults are pretty stupid sometimes."
> Psychologists declare whole races of people or countries as doomed to poverty because they've got "low IQ"

Who the hell have you been talking to? This is obvious bullshit.
Honestly, I find this horrifying. Why take one of the few decently commons-producible information goods and enclose it with a pay-for-play economy? What is the possible benefit to society?
Detonation in a car engine is bad. What's actually happening in a normally operating engine is deflagration.

Deflagration = subsonic combustion
Detonation = supersonic combustion

When people say "explode" they tend to mean detonation.
>chlorpromazine... enabled the demonstration that biochemicals such as neurotransmitters are involved in mental disorders

It does no such thing. This drug, and most antipsychotics, simply shuts down the forebrain. It "treats" psychosis by shutting off your mental function. As soon as you remove the drug (go "off your meds" because you want to think and feel again), psychosis resumes. This tells us nothing about the nature of psychosis.
Can someone point out where the article says why it's slower? I'm having difficulty unpacking:

"The new theory was inspired when Jafferis began thinking about two black holes that were entangled on a quantum level, as formulated in the ER=EPR correspondence by Juan Maldacena from the Institute for Advanced Study and Lenny Susskind from Stanford. Although this means the direct connection between the black holes is shorter than the wormhole connection—and therefore the wormhole travel is not a shortcut—the theory gives new insights into quantum mechanics."

Why is the wormhole not a shortcut?
Seems like they would want go the amazon route and bring a lot of that in house to cut costs and possibly create a revenue center.
Ask HN: How do you handle ML models with large no. of classes?
For example if you have a model that consists of more than (say) 2000 classes - do you train a single mega model? or multiple smaller models (for speed/efficiency) and combine the outputs? Are there any best practices that worked for you in production?
Check out the academic article.[0] It shows that Microsoft and IBM are way way better.

[0] http://www.aies-conference.com/wp-content/uploads/2019/01/AI...
Ok well, in defense of the soft sciences on that one. Psychiatry is a medical profession. They are medical doctors. Psychologists don't prescribe medicine. More over, they can't prescribe medicine. Also, I'd love to see what research you're reading where psychologists determine "whole races of people" will always be in poverty. That's a new one to me.
Why? What is the point of owning language?
Bulk insert support in Rails 6
Developer Tools you need to check out
I think the main issue is filtering which ones are any good. PG wrote an essay which is good http://www.paulgraham.com/startupideas.html
Rental or not, the difference between almost any low end to high end cooking item is the temperature control.

Sous vide, big green egg grills, induction ranges, some of the air fryers, etc. It’s all about precision temperature.
The USA also has a 'pit bull' problem, everyone wants to breed them in their backyard for some reason. They think they can sell them for a ouple hundred dollars each, end up giving most of them away and turning the rest loose on shelters. And most people who buy one can't take care of it so they put it up for donation. And nobody wants to spay or neuter their damn dogs.
15% sounds impressive but it's 60 GBP in absolute savings. That might just be enough to finance the hours it probably took to collect, compile and process all things necessary to make this calculation.
I'm genuinely not seeking to troll or start a flame war here, so I apologize profusely if I speak out of line, I'm just looking to understand the current Chinese mindset.

All that working hard is to catch up to a country that pushed the envelope on a 40 hour work week, and at least made an effort to respect the right of the worker to have a life outside the office?

I find the argunent/cultural value unconvincing when most of the country's innovation has been fostered through copycatting, IP theft, and exploitative market gatekeeping.

I don't mean any offense, nor do I assert the United States is saintly in the non-abuse of workforce, or in any trade related department really, but given what we've been finding out about Chinese IP hijacking, their hostile trade practices, and personal experience working with Chinese H-1B's (whom if I catch trying to pull that 996 nonsense, I send home after 40 hours), I do think it's just an underhanded tactic used by authority figures on a vulnerable population.

The fruits of passion are best grown without compulsion. Play unites artist and engineer as Tao does one in the state of no mind.

One cannot be moved or inspired by heaven and earth stuck behind a screen toiling for one's master.

Hell, weren't the Chinese the same culture who brought us the gem of wisdom that "one who lacks control of oneself brings only strife when faced with the responsibility to control something larger than themselves"[Confucius paraphrased]? Where have these workers had the time to develop as healthy individuals? Not just to gather academic knowledge, but the wisdom born of personal folly to employ that intelligence well?

For a wealthy man in a purportedly communist regime, Mr. Ma seens, at least to me, whether he realizes it or not, to be falling into the worst tendencies of capitalistic practices hook, line, and sinker. The People suffer under the boot of a man who has grown so accustomed to the creature comforts afforded by his position that he has forgotten the reason he is where he is in the first place.

To usher the Chinese people to a new age of glory and prosperity.

At least, that's the Party line, is it not?

Surely others see the disconnect here, or am I just mad, and completely out of tune with the zeitgeist/realpolitik?
I’m saying that techies aren’t as amoral as this article claims. It choses to ignore popular ethical positions and instead claims people are operating without morals.
"if it’s good enough for those four people" made me lol

But at least now it is 4 to, well at least, 1 no success
Most remote workers are independent contractors, and they generally invoice you.
From the master himself:

http://www.paulgraham.com/startupideas.html
Also, the notion that dark UI patterns are exploitative of teenagers but acceptable for adults is ridiculous. Plenty of adults are just as (if not more-so) vulnerable to these things than kids.
More important question - how did he get a time machine to the 1920's?
The French Bulldog seems to be the biggest trend on social media right now. Those things are not cheap. $3,000 for a pup is not unheard of.
> My oldest's addict-like behavior went away once he had unlimited internet access.

Back in the bad old days, I remember staying up many nights until 1 or 2AM because of the slow dial up speeds. I told mom better internet would solve that problem. It did.
Eh—I would have designed SQL differently if I were in charge (especially for casts, function definitions, and string munging) but leaving that aside, I disagree that the JOIN ON syntax is unnecessarily complex.

We do not write programming languages solely for computers. We write them for humans too. Humans make mistakes and come at codebases at all manners of experience, both in breadth and depth.

For example, it may literally be someone's first time looking at SQL when they're confronted with the following:

SELECT *
FROM classrooms, enrolments
WHERE classrooms.id=\classroom_id;

It is inherently less clear than the following:

SELECT *
FROM classrooms
LEFT JOIN enrolments
ON classrooms.id = classroom_id;

It's easier to figure out bugs too, because it leaves more room to understand what the person intended to do rather than what they actually did. For example, say the classrooms table had, due to legacy issues, a nullable id field, but we didn't want to include those classrooms. Someone may have inadvertently typed:

SELECT *
FROM classrooms
LEFT JOIN enrolments
ON classrooms.id = classroom_id
WHERE classroom_id IS NOT NULL;
// ^ should have been classrooms.id

Because the NOT NULL criteria is in the where clause, it's clear it's not supposed to impact the join. It's supposed to be part of the filter. I know it's the same thing practically, but they're conceptually different.

Further, as you get into more complex queries (unions, recursive, cross joins, aggregations) stuffing everything into one hairy WHERE statement gets impossible to understand because it does everything all at once.
Hmm: So if I'm reading you right, you're saying: instead of baking, freezing?

off to put laptop into dry ice freezer
catch (Exception e)
{
e.printStackTrace();
}

This looks like an inadvisable move. Do android apps recover the data written to stderr anywhere or does this trace just go into the bit bucket? Why not let the unwind continue and if the application crashes, android can do its automagic bug reporting for you?

If Java requires you to catch the exception or declare a throw, then it seems like it should throw until you get to an outermost stack frame that's sane enough to handle it (open an error dialog box, retry, log the error, etc).

Sorry, the app and the idea are super cool, and keep up the good work. This is intended as constructive criticism.
navigating the web without Firefox + ublockOrigin is like sex without condoms. lots of people do it, it's great, but you should know better by now.
I'm sure large corps would make that a clause in your employment contract against that.
> People building say, Inbox were told it was acceptable to launch a product that is only accessible to one browser at launch. I hated that decision because it affected me directly but that’s not malice, simply prioritisation.

Would it have been acceptable if the one browser was Edge, Firefox or Opera? I bet dollars to donuts that they would not launch until they had it working on Chrome.
I suppose a supplier choosing to work with Walmart could have chosen any reseller/distributor, whereas with apps you're pretty much limited to App Store / Google Play. Not everyone shops at Walmart, but almost everyone shops for apps at App Store / Google Play.
> University student computing club

How many people? The first comment of that thread was talking about a 3-4 peoples groups. I personally agree that for large group you NEED formalities. It's not even a question of if it's better with or without, the group will just not survive without formalities.

What acting up? Did you felt right about how someone acted? That's acting up. Is it enough to kick someone out? That would be mostly about if he keep doing it or not... and how everyone else feel about it. Maybe it just means that this group isn't meant for you either.
Seems like this is pretty similar to pumping your own gas. It would be interesting to compare, say, Oregon and California, both for employees and employers.
I don't know why you are being downvoted. The famed neuroscientist ramanachandram had a story about how psychiastrists were assigning woman with all kinds of disparate diagnoses for her occasional erratic behavior. Turns out neuroscientists found out she was having small strokes and once they fixed it with brain surgery, her erratic behavior went away.

Psychiatry is like fixing a software bug by telling the customer to simply avoid doing things that causes the bug rather than correcting the actual code and fixing the software.

I know some people don't like reductionist reasoning, but the more I think about it, the more I'm inclined to believe that all psychological problems are ultimately a brain problem. We just don't know enough about the brain yet to fix many of those problems.
So many Corgis and, lately, Samoyeds (big fluffy white dogs) are being bred now, it's upsetting. And the huge popularity of French Bulldogs is depressing to me because they have to be born by c-section.

People do want specific traits in dogs though, whether for hunting, for companionship, or agility etc. I just wish breeding dogs had better oversight and certification along with better custodianship of the breed's viability. (i.e. none of this more and more extreme visual traits that many "breed experts" judge against)

Especially when you understand just how sentient these beings are. Euthanizing them shouldn't be so widespread.

We have serious responsibilities to another species that we are not maintaining, we should be doing better for our dogs.
>They convince you do to labor for the grocery store chain for free.

Free from money, yes but not free from value. As there's usually little-to-no line to the self-checkouts, I save time. For a little effort on my part I don't have to wait in line (something I hate more than checking out my stuff).

>The self-checkout stand, destroyer of jobs

Vintage luddite. I'm honestly flabbergasted that people who gladly use modern technology like internet, smartphones, computers etc never stop to reflect on the sheer number of jobs their gadgets have destroyed. But the self-checkout stands, this is outrageous!
I call it bringing them back into compliance with local bylaws on bathrooms.
It appears to me that a lot of the responses to this are missing two very important key points this short post illuminates.

1. Self-checkouts have become another a way to diminish the power of the strike.

2. It's not really automation. The labor has been shifted onto the customer.

We can have a discussion about efficiency and innovation, but that's not exactly what's being pointed out here.
How to Make the Most of Tech Conferences and Meetups
They appear to be designed for developers' convenience, not operational excellence.
True, if the system was only trained on women wearing make-up, but tested on women not wearing makeup, that would definitely create this kind of bias.

That's exactly the kind of thing that a good AI engineer should be looking out for.
It does not matter whether kids can circumvent the restrictions. This is all about providing future legal action banning persuasive techniques used on children.

Now: sue tobacco companies coercing children using targeted advertisings.

Future: sue social media companies coercing children using persuasive techniques.

Question is: could insufficient age restriction methods hold companies liable?
>> plain and truthful language

It always ends up with "we do something to make your experiences better", to "help us continually protect and improve your experience", etc.

I'll be rather explaining along the lines "we're a corporation, we have shares to sustain and employees to pay, so we're going to milk you and your personal information for our sole benefit. You have to know that it will be better for you if you don't make it easy for us to do so".
Twitter Doesn't Want You Sharing This Link About TV Piracy
> ...should she be naming and shaming the development company...

Yes, if you're offering a product for sale, it's fair for people to review that product in public. And that's not "naming and shaming," it's a critical review of an irresponsibly-developed product being sold to law-enforcement agencies.

> In fact, I would expect law enforcement to test this software thoroughly themselves, because that's their job.

Yes, that is also their responsibility. But where is the recourse? Law enforcement agencies have abysmal records of self-investigation, and the judicial system is unreliable at best, in holding law enforcement agencies accountable.

The public has a right to know what technology is being used to police them. If you want to call investigative journalism "naming and shaming," then yes, absolutely, she made the ethical choice in speaking out.
It would only move the drama from the real time judging to the determination of the training data set.
I don’t think that’s necessarily the case. Until about a year ago I myself was one of the under 18’s and although I myself have never had a “streak” or used social media much in general I do have some experience with these kind of things because I see my friends and peers partake in these kind of things. What I mostly see is that the upkeep of a streak consists of sending a black photo with some text on it like “goodnight” and then it being sent to dozens of people. Not much comes from it other than maintaining a streak.

So not a lot of social interraction in that case, more so a reward for substanceless and ultimately unrewarding behaviour. Even more so, I saw my peers getting distracted from actual social interaction IRL by these kind of things.

I don’t think social interaction has anything to do with things like streaks or other addictive nudges. I think the most that is needed for social interaction is a chat client (or voice for that matter) and the ability to send photo’s or use a webcam. It shouldn’t be more than that. Other things often get in the way of real social interaction be it online or offline.
Holy crud: "Android Devices. Within [] after the Maps APIs Addendum Effective Date, Customer will make commercially reasonable efforts to standardize on Android-based devices for at least [] of new, Customer-purchased devices issued by Customer to Uber Drivers. Customer may select the specific Android-based devices, and they may vary by region."
This is funny, but I'm not sure what the actual point is.
I know nothing about binoculars. Why 7x50 specifically?
> It is unlikely a complaint about DMCA behavior is going to go anywhere.

It is guaranteed that the lack of a complaint will not go anywhere. And legal processes tend to be VERY slow and inefficient but they thrive on formal documentation.
> they also need about the same number of people as before because some one has to fight off the swindlers.

Pretty sure that's not generally the case. In Migros (Swiss supermarket chain), where I shop, they have one or two people monitoring 10-15 self-checkout stations. Even though the customers might be a bit slower scanning than full time cashiers, that's still a lot less people than an equivalent amount of old-school checkout lanes.
> breed specific legislation already allows you to be denied home insurance (and consequently, mortgages and equity loans) based on having one of these dogs today.

!
The .nl tld should tell you it's not a US org.
It seems to me there's a bait and switch of sorts that we play on kids. We tell them science can answer their questions about the world, or that they can use science to answer those questions, but it kinda can't. Keep digging and pretty soon you're lost in not-quite-accurate metaphors that may have nothing to do with reality and "we can tell you how it behaves, it's [pages of equations], isn't that good enough?"

It may be (probably is) that "what is this" or "why does it do that" are just meaningless questions, in the sense a child (or adult who hasn't re-calibrated their expectations of what science can tell them) means them. Which is interesting itself, I suppose, but at that point just go study philosophy and art, if that's why you were into science in the first place—and I think it's why everyone at least begins to be interested in science.

[EDIT] in particular it's frightening how fast kids' questions stymie an adult because the adult realizes that they're only a step or two away from "why is there something instead of nothing, and also what is something?" and... good lord, at that point seriously just go become religious or get really into philosophy or something, because you're outta luck, kid, sorry, we don't have any actual answers, just observations about what all this stuff does, but no we can't tell you what "stuff" or "does" are.
I would guess it's because it is an huge simplification of the relationship between the two disciplines. The fields of science are not discrete.
And this is why I spent $100 on a hot air gun for my video game console repairs & restorations instead of trying to do DIY reballing without proper equipment (which is $$$).

Consistent and controlled heat are absolutely vital when working with tiny SMD components.
The article is meandering, but I think at its core it has some key points that are worth considering, at least to me:

1) Organizations are built of individuals, and while the individuals can hold strong moral standpoints, it is difficult for an organization as a whole to do so. It is also difficult for individuals to promote taking a moral standpoint as an organization, or in many cases to even notice the incongruity between their personal morals and the morals of their organization.

(This points reminds me of the banality of evil. And I think it is a valid point, and something we should be on guard about if we want our personal values to match the values of the products we create.)

2) It is easy to dismiss moral concerns in business as being something that the market will figure out for you. That is not necessarily the case.

(I have found throughout my own career that many companies are willing to appeal to a morality that is somewhere along the lines of "whatever we can get away with is our moral boundary." Measuring the morality of a decision by public approval of/success in sales as a result of that decision. That is far removed from actual moral judgment, particularly when public approval is so easily swayed by factors that are separate from whether the subject in question is helpful or even actively harming them. See cigarette lobbying until their false claims were finally debunked and their lobbying efforts exposed in the 90's. [As a side note, I'm curious who would argue that the efforts the cigarette industry made throughout the last century to spread misinformation should be considered "free speech" and their ability to do so a preservation of "personal liberty"? Let's see what pops up in the comments.])

3) We have a duty to think more actively about whether our morals align with the morals of our company, and to make that known if we would like to see that change.

There are other points that might be more interesting to those with a design-oriented focus toward the bottom of the article, but these three were the points that I took home from it.
Too hot. Water would be violently boiling and fat too much contact on the parts in a bag under vacuum.

Reflows ovens work because they allow nothing touching the parts on a level board, the solder paste melts into solder pools and the parts center themselves by surface tension over each pad.

Most of the time if you are hot air soldering and the solder, flux, pad shape, and part are good, you need no positioning tool at all. The solder melts and the part just wiggles itself into place.
Based on the colloquia I watched by Lenny Susskind, the problem is that you can put something into a wormhole, but to get it out the other end, you have to carry the encoding you get to the other end of the wormhole to decode the output. Because the distance to the singularity grows at the speed of light, the length of the wormhole is essentially infinite. It is only the operator you get from putting the object into the wormhole that lets it tunnel through that infinity, so no shortcut.

EDIT: Here is the lecture I'm referring to: https://www.youtube.com/watch?v=nEDFh8ma9zM
Used to do the 'blanket fix' with the first few Intel MacBooks that had failing NVIDIA graphics chips.

Wrap them up in blankets, powered on, and wait a few hours.