skysight-inc/HackerNews huggingface dataset:
But if you're teaching a particular technique, then the test would not be whether you can answer the problem but whether you understand how to use the technique.
Funny that a guy named Firestone is hyping it, considering what happened the last time grid-connected electric vehicles became popular: https://en.wikipedia.org/wiki/General_Motors_streetcar_consp...
Till my senior year of HS, I thought math was easy, but not very interesting. This was basically for the reason you describe -- there's one obvious right answer, and a set of steps you can mechanically apply to reliably get there. When I finally reached the creative math classes[0], I was surprised to find that math could be so engaging (and difficult relative to all the previous courses). All math may ultimately have a right answer, but there's much more flexibility and even subjectivity as you progress

That's also a big part of why I got into Computer Science. Computer Science[1] courses are basically a flavor of the interesting kind of math. I really enjoyed working through algorithmic and computability problems because it wasn't always obvious how I should approach them or if I'd even be able to figure them out.

I think it's sad the vast majority of students will never even reach a math course where they aren't performing calculations that could trivially programmed into a computer. It seems like there should be a way to give students a taste of that earlier on, but I'm not sure what the best approach would be.

0: This kinda started with integrals in Calc II, but didn't get really interesting till the my first 3000-level University course on proof by induction and the like.
1: Not programming or engineering, although those can be fun in their own ways.
I don't like this spin on humans as imperfect compared to the perfect computers.

Of course humans will make more mistakes, when the immense complexity of the business logic models they deal with surpasses what even the most advanced computer can process today.

Plus, computers also make mistakes. They fail in arbitrary ways, and may produce an arbitrarily wrong result when you least expect it (say, if they overheat).
I disagree: The teacher's job is to teach mathematical reasoning, not to teach students to retain meteorological trivia from earlier in the day.
The article starts out strong then becomes an ad for the Surface Pro 3 without actually stating what's so great about the SP3. Sure tablets are not killing laptops for all the reasons outlined and more. This isn't news. What also isn't news is the existence of the Macbook Air (and similar non Apple models) and its ability to run regular programs since its inception, including windows. It's easily powerful enough to develop apps on (that's what I use for consulting) while being light and small enough to be carried. In other words, the Air and other ultrabooks have been able to do for years exactly what the author touts the SP3 as finally being able to do: run regular applications with a keyboard. No one needs need a poorly written, wandering article to them that.
I just looked up the US Department of the Interior (https://en.wikipedia.org/wiki/Department_of_the_Interior) and I'm confused about what they were doing - the war on drugs seems way outside their stated purposes. The article on the ruling doesn't seem to mention it though, would it have been fine if they'd had a warrant? I don't even see why they are able to get search warrants for a home from their stated purpose.

Interesting and recent precedent though. I wonder if it would hold for a normal camera if a drone flew past a house at human walking height and took pictures of what's inside. I'm guessing a police officer can act on seeing something in a house they're walking past, if that's the case then what if a drone took a picture and an officer later or immediately saw it?
Why would Polish police take part in a raid in Sweden?
I am sick of tired of hearing about projects, lately
oten security related projects that are vaporware.

They have nice websites, nice graphics, very professional,
but that is all. Nice marketing.

The title
"Subgraph OS: Adversary-resistant computing platform"

Should be

"Project SubgraphOS is an idea to build a Adversary-resistant computing platform"

Take me to a really plain website, and state status on the
front page

"No release, No source"

But maybe some design documents?

On top of that please say on the front page
"Yet another Linux distro"

so people like me dont get the impression that its
actually something interesting written from scratch.
Mostly an exercise in using a tool for something not intended - art?

You can definitely express any Brainfuck program as a integer program, and you can add constraints that will constrain what the program does/must do, but it isn't clear to me how to add useful constraints/objective that are still linear. It'd be an interesting exercise though, and something I'll be thinking about.

Integer optimization does have some practical uses related to programming though - its use has been explored in compilers. E.g. http://www.sciencedirect.com/science/article/pii/S0898122197...
Ufda.
Each key press adds to the push state history. Spams the back button
pervasive surveillance has a toxic effect on the human mind. it's the same reason mass surveillance by the nsa is disturbing, even if you have "nothing to hide"
Infinte speed! Mathematically but not physically possible.
Boston also has these, some are still diesel, though.
maybe one day he will be considered a hero (anyways, I think that he should be)
Because type systems, at least in the ML tradition, reduce down to systems of logic that we already know how to prove properties about. We can prove progress and preservation of a type system, and we even have systems to mechanically check those proofs.
Also in regards to accuracy, weight never changes.

Volume fluctuates depending on temperature.
That really isn't a lot of notice.
Lenovo has the Thinkpad Helix.

But why not just have two devices? When you detach the keyboard you practically do have two devices, but one of them is useless. This is my guess as to why this hasn't really taken off - because the keyboard doesn't fold itself into another dimension when you don't want to use it.
Ventures that require large upfront investments
It might be possible. Consider adding new auxiliary variables that represent the state of memory after each operation. You may be then able to add (linear) constraints to those auxiliary variables that are meaningful. Including user input could be tricky though.
This looks like a joke/puzzle from Douglas Adam's game, Starship Titanic. https://www.youtube.com/watch?v=pZabKeSHmW0#t=900 <- starts at 15 minutes
It's worth noting that all the matches that were alleged to have been fixed were "friendly" pre-tournament matches. Bookmakers will still lay odds on these games, but they have no bearing on the World Cup tournament itself.
Why You Hate Work
Here in the UK, most cities have at least some form of much-marketed hybrid bus. I'm not sure how much they save, but obviously there's an incentive to at least try it out.
This is a big belief of mine, so I'd love to get anyones thoughts on why it's wrong.
Yes, the wealthy, too, want us to focus on inequality among the 99% instead of shining our light on the 1% or the 0.1%. They always want to talk about education and skills gaps instead of talking about how they've shaped laws and institutions to make sure they retain their wealth and power. Meanwhile, wages have been stagnant and debt increasing for everyone who is not in the 1%. Mr. Autor's arguments are a red herring.
This is why we need more posts like these and more of those How things are made blogs. Too often people don't even begin getting into (high) tech because they think it's too complicated or expensive.
I guess this is why I will never teach math.

When I was in high school I would always lose points on my tests because I never showed any work. It was always easier for me to imagine formulas in my head like puzzle pieces then writing them down.
Ask HN: Common interview questions for senior software engineer position?
Hi guys, I have a 3 hour interview coming up on Monday, this will be my first senior level position. Prior to this, at various other places I have worked as intermediate.

What questions should I prepare myself for? 3 hours seems awful long just for asking technical questions?

All in all, I hope to transition into senior level position smoothly. Most of my experience comes from building my own products (SaaS, desktop etc). and working as an intermediate level software engineer for a few years and finally working as a freelancer.

The position is for a backend developer, and they have popular mobile games that they need to support.
Police claim the drones will have "narrow and prescribed uses."

Interesting. That's the same claim that was made when LA introduced the first SWAT team. I expect it to be just as true: false.
I'm distinguishing "unsafe" from "doesn't work". Having "just a fraction of the ingredient on the labels", even if true, doesn't automatically make a product "clearly not safe".

The study referenced in the Forbes article doesn't say how it picked which 44 products to study, which seems to be key to the question at hand. Was it a random sample? Was it a sample they had prior reason to suspect? Only if they'd picked products from the shelves of a specific retailer would it be a test of a retailer's selection acumen. (The fact that a product is available from somebody somewhere doesn't mean you're likely to encounter it.)

They also don't tell us which specific products were good or had problems so there's no way for a 3rd party to check their results. (Was that the intent? Given 2 companies were absolutely reliable, why not at least tell us which 2 companies they were?)

Dietary supplements often get recalled despite being ridiculously safe. If the FDA gets more than a certain number of adverse reports they have no incentive to consider how popular the product is and do a cost-benefit analysis; as far as they're concerned the "benefit" of a popular product counts as zero so any measurable risk is too high.

Weight loss supplements are particularly prone to being recalled due to risk levels that aren't at all out of line with the potential benefit.
Also somewhat off-topic but interesting in the context of DANE and the cost of certificates. Brian Smith (a mozilla security contributor) recently said the following in a discussion about adding support for invalid/self-signed certificates to the Firefox OS e-mail app. The quote below can be found at the bottom of https://groups.google.com/d/msg/mozilla.dev.platform/lT4Mhi-... noting that I think the first TLS is meant to be TLD.

"Regarding DANE: Any TLS registry can apply to be a trust anchor in Mozilla's CA program and we'll add them if they meet our requirements. We can constrain them to issuing certificates that are trusted only for their own TLDs; we've done this with some CAs in our program already. Any CA can
give away free certificates to any subset of websites (e.g. any website within a TLD). Consequently, there really isn't much different about the CA system we already have and DANE, as far as the trust model or costs are concerned."
This is similar to automated license plate scanning.

There was a discussion here a while ago (can't find it now) about an article discussing the automated license plate scanners, and one of the posts had a really good point: our society's regulations about what law enforcement can and cannot do, and the citizenry's relationship with said law enforcement, are based on a certain amount of inefficiency. Hand-scanning license plates and requiring expensive helicopter crews to perform overhead surveillance are two good examples. When technology eliminates those inefficiencies, the rules and regulations need to be re-examined.
Oh hum, that looks interesting, thanks!
Ask HN: How do you get to work/office/desk?
Walk? < 1Km
Bicycle? <2km
Car?
Bus?
Tube?

I ride my bike! :)
Can he just fill for bankruptcy to clear the damages?
I think that the obsession with "doing well" is by no means an exclusively American trait. Just look at the Indian obsession with IIT-JEE, or Koreans with the CSAT, or the English with A-levels, or the French with the bac. American students, in my opinion, don't really obsess more about our system that anyone else.
CCTV, as deployed today, really falls into to two categories. By far the largest of these is people who own or lease private property who are installing cameras on their own property. There are some "public private partnerships" where LEO is tapping into these feeds but, at least in the system I built, there is significant auditing involved. In order to catch "LOVEINT" style snooping. Typically though this footage goes completely unmonitored unless there is a incident though.

The second category is cameras that capture what would otherwise be "in public view." These are systems where the cameras are clearly visible and mounted close to the ground. In the context of the law having a live detective monitor a suspects house is pretty much the same as putting up a camera that would be functionally identical, which is pretty much the same as putting up a 1000 cameras and doing LPR on every car that passes by. If the feasibility of this kind of surveillance requires a change in the law is still an unresolved policy issue IMO.

With drones there are bigger issues. Because of elevation they are going to capture images of things that wouldn't be "in public view" and would therefore typically require a warrant. If these images were limited to the suspect there isn't an issue, but of course they aren't. The real kicker is going to be when someone figures out that they just need to add a $5K thermal sensor to the thing in order to net a couple incidental drug busts every time they need to track a suspect. At that point they will become profitable to operate, usage will increase, and one of the current bright-line tests for when you need a warrant will become significantly fuzzier.

Don't get me wrong. This type of technology is solving crimes that would otherwise be unsolved and helping people like Jianqing Klyzek protect themselves from police misconduct, but appropriate limits need to be put in place. The efficiency of subservience technology is only going to increase. We can't stop the world from innovating the only way to maintain a reasonable balance between privacy and safety is through policy and where to draw the line is definitely something that reasonable people can disagree on.
They will most likely appeal I think.
yes, this is my biggest problem with my favorite browser... why does Firefox do this? (Encrypted, unauthenticated: THE SKY IS FALLING.) edit: this is probably part of a NSL...
Wearing dubious clothes is a "terrorist operation" nowadays, at least as far as police reaction.
Ask HN: A site to find devs, designers to work on projects?
I'm wondering if there's an active site where I can find other devs and designers to work with on projects that we mutually have an interest in. Any ideas?
Eh. In 2000, paying $50 for a game meant much more than 10+ hours of enjoyment (assuming it was a game you liked). For all the polish and technological prowess of modern games, I think most of us consider them a ripoff because of just how little substantial content and replay value there is in many blockbuster games.
What was it about ads in magazines that made us actually want to see them. I used to buy guitar magazines and even though I never bought any of it I liked seeing new gear that was coming out. Online I would never bother to check things like that and actually get annoyed by those ads on guitar websites.
I see. You have a different conceptualization of what blame/fault means than me.
Some or all of the item prices seem to be based on the lowest "Used" price. This is not always ideal -- I am not about to buy a bookcase normally around $50 from the one seller that has it at $12. Being able to exclude used prices would be great.

Otherwise great UI and idea.
That crossed my mind too. But I see an ounce of truth in this. I can speak from experience, when you're young and consumed by technology, you might have difficulty conversing with women, even if you're attractive physically. My dating life improved after majoring in art ;-)

In general, I think it's hard to find people that can keep an interesting conversation going, and in your 20s you don't have much life experience anyway, especially if you moved straight from a classroom to a cubicle.

As far as talking about yourself on a date, it's not necessarily a problem, it's just a different style of communicating. If she's talking about herself, that's a strong signal she's interested. Then I can respond with information about myself--that's perfectly acceptable and possibly the desired response. In a conversation, you can change the subject, what a concept ;-)
Take something real simple "Solve X + Y = 2; X + 2Y = 4 using substitution."

At the basic level that has 4 choices, you can substitute X or Y in the top or bottom equation.
...allegedly. It's got "conspiracy" in the title for a reason.
Livemocha is pretty cool. They offer lessons to help you exercise the four major skills -- reading, writing, listening, and speaking.
Bill Splittr
No more food fights, split the bill with this iphone app!
These discussions are useless if you don't factor in housing and childcare costs. If a couple consists of two working professionals, they pay a steep penalty for childcare.

Comparing my personal situation to my parents 30 years ago, I'd argue that we're easily making 25-35% more relative to my folks in the 80s (mostly because we had kids later), but I think that we are less well off in several respects compared to my family in childhood.
You got it! Yup, it was a trick question! It took the class about 40 minutes before the first student got it! But the class didn't have any trouble comparing 1/8th and 50%.
You could use the monad to generate an embedded program that runs in constant time on a given class of problems. Then the challenge is smaller-- ensure that the program generator is not exposed to tainted inputs, and run the generated program in your request-handling loop.
I imagine fully automated shipping docks are just a decade or two away. Driveless cranes – like Amazon's Kiva warehouse robots – could do much of the work more safely & efficiently than humans could.
Without knowing Swedish law, I'm rather certain he cannot.

Personal bankruptcy is usually out of the question for debts arising from unlawful behaviour. You cannot evade damages or a penalty imposed by a court just by filing bankruptcy.

Imagine a legal system where you could. Preposterous.
And if those Water Engineers are consumed with their jobs - and constantly stressed and depressed by the poor standing of the world - and cannot seek little pleasures in things like pastries or a craft beer or a street performer, would you say they would perform to the best of their abilities?

Could Earth use more Water Engineers? Certainly. Should people with passion be forced into pursuing careers that utilize their talents better? No way.
They will probably ask you to actually code something. I don't know these guys... but they might ask you some silly ass trick question..

http://www.programcreek.com/2012/11/top-10-algorithms-for-co...

Check that out.
When you go Pro, it becomes all about the money and not about the spirit of the Zen. ZenAmateur may be less skilled, but more desirable.

> That said insulting people's children is never nice, but everyone is someone's child so sometimes it's a necessary evil.

Making broad prejudicial statements is never a necessary evil. There are plenty of ways to make accurate statements without insulting people or exaggerating their weaknesses.
How many of the flags came from Amazon employees/investors?
Television advertisements would like to have a word with you. These are the most annoying, strategically placed to interrupt in tense moments, yet they make up the bulk of ad spending?
There hasn't been any margin in PCs in many years.

For large enterprise purchases, Dell/HP/etc takes losses and makes its money via kickbacks from Intel.

My guess is that wearable stuff would be higher margin, and tied to super high margin services.
The focus will have to turn to apps. New types of apps that make our tablets more useful. Apple is positioned to make a lot of money from this; their 30% cut on all app purchases is substantial. The growth of apps may drive the development of more powerful tablets up to a point where every tablet can satisfy 99.9% of your computing needs, as is the case with laptops and desktops today. We're not quite there yet, but we may be there in a few years.
> We might waste the time of the kids that are going to end up flipping burgers, but we don't waste the time of the brighter kids.

I would have said we really waste the time of the brighter kids. (Though we waste their motivation more.) We just waste it in a different way. Bright kids could pick up the math they need in a very short period of time on their own, but we present the material only in drips and drabs at a glacially slow pace with lots of repetition, working on the assumption that they're not really paying attention and probably forget everything during breaks.
If they're cutting things this fine I fear for the future of justin.tv, this does not sound like a well thought out corporate move, it sounds like panic. Imagine coming back from your holiday in two weeks time and finding all your stuff wiped out. Ridiculous.
It's very old (2008) but there is a pretty good PBS/Frontline interactive map (and other assorted info) about the disaster here: http://www.pbs.org/wgbh/pages/frontline/everest/map/

Their documentary about the tragedy "Storm Over Everest" is fantastic. Unfortunately, it can't be watched for free online any more.
Gottfrid Svartholm is currently being held in solitary confinement in Denmark, Peter Sunde is arrested in Sweden. I thought these countries were like role models.