skysight-inc/HackerNews huggingface dataset:
Across the US, a major, uncontrolled leak of a potent greenhouse gas is going unregulated and largely unnoticed.

Climate Home News analysis of government data has identified roughly 300 active and 200 abandoned coal mines, which are the source of almost one-tenth of US methane pollution.

Methane has 34 times the long-term warming effect of carbon dioxide and accounts for 10% of US greenhouse gas emissions. Its emissions from the oil and gas industry and the efforts of the Trump administration to roll back regulations on them have been widely publicised.

Meanwhile, US coal mines released 60.5 MMTCO2e of methane in 2016, with roughly the same warming impact as 13 million cars. Efforts to control the problem are being hampered despite those with the technical expertise claiming a whole industry could be built on capturing these emissions and turning them into electricity.
Erdogan to Boycott iPhones as Turkey’s Feud with U.S. Escalates
This. Test them using the tools they will be using every day.
Ask HN: Why are there no public social networks?
(Not as in "going public".)

Why have we not seen a publicly-operated social network?

It strikes me that enabling people to connect with one another is fundamental to most governments as a public service. Cities and states make and fund roadways and public squares and parks. Social networks seem like an approximate digital parallel.

Given everything that's happened with Facebook and Twitter in the last months, why are there no examples of government-run social networks?

(Or, if there are, what are they? How do they work?)

edited the title for breadth

edit 2: thanks for sounding in! A lot of great answers. To be clear, I didn't mean to present this as a leading question. I was curious about the perceived reasons from HN's audience.
Cryptocurrency Market Plumbs New Depths in 2018
I had such an a-hole interviewer the last (and hence final) interview I did at Google. His attitude was ... oh .. you have a PhD, let me show you how smart I am.

Just like getting into YC isn't necessary to be a successful founder, getting into Google isn't necessary to be a successful engineer. There are tons of companies out there, and many pay better than Google.
Does CNP mean https://en.wikipedia.org/wiki/Card_not_present_transaction ?
Also mentioned here:
https://www.bbc.co.uk/news/technology-45183041
Nova Launcher persisted in keeping that Do Evil search box out of sight, despite my upgrade to Android 9 two days ago. I'm very happy with Nova.
IronMic: The easiest way to create a website for your podcast
Actually I mean "whiteboard interview questions". I think you can search those from google.
I have used Xilinx's toolchain on Linux, though it was hard to get working. This was a few years ago.
Theobromine as an alternative to caffeine
You make a lot of realisations about the nature of work along the way. I imagine it's less that people hate their job specifically and just that they are tired of the grind in general. You can love your job and still not want to be at it for 40 hours a week.
Question: is the analogy of thermal energy as particles flying around and bouncing into each other just analogy? At what temperature would the particles fly at the speed of light?

> Above about 10^32K, particle energies become so large that gravitational forces between them would become as strong as other fundamental forces according to current theories.

I see, the gravitation would become a problem even before the speed.
I came to say this. :)
Turkey has a lot of sov as well as corporate debt in USD and EUR. They also import a ton of oil which has more or less only gone up on the year.
Walk Monster – How the Witness Tested Walkable Spaces
For a short while, maybe.

"Excellent talent" means a strong inner drive, it takes something like an obsession to put in the grind to get there. The feeling of contributing and creating and playfulness and attacking new frontiers is non-negotiable. You lose it, you're no longer "excellent talent".

No money can replace that (though life circumstances may force a detour — that's why it's almost a tautology, but not quite).

"Being found out for not contributing"? You know you can do better.
No, fuck totalitarianism. We don't even know what China might be if it weren't for totalitarianism. Just like an individual under such pressures cannot become themselves.

Speaking of things that suck, why is this story "penalized"? Looking at position, age, points and comment count, it's super obvious there's something up when comparing to non-penalized stories.
The Rise of Mobile: How Mobile Apps Have Changed Our Lives
Try an exercise called face pulls. You'll need a cable machine with either a rope handle or a towel and google or, preferably, a trainer. Unless you're unconsciously hunching your shoulders or something weird, you'll find out almost immediately if the exercise helps.
But I suppose appropriate heuristic solutions are typically only "pondered about" and not "found" at the whiteboard, because they require extensive testing with real-world data to see if they are actually efficient in practice.
I'd be careful about trying to extrapolate this to everyday work situations.

They were performing a very specific task (solving a traveling salesman problem) that had a clearly-defined optimum solution and little room for a lot of the kinds of thinking that are needed in business scenarios, such as challenging the business case and lateral thinking.

I didn't notice them stating a overall duration for the experiment (admittedly I did skim), but it sounds like it took place over the course of, at most, hours - not the weeks, months or years that would be relevant to someone trying to optimize a product development process. That means that their "intermittent communication" case probably still involved communication at a frequency that would be downright unsustainable in a business setting, and would certainly be something most of us would think of as "constant". For example, assuming the experiment took place over 2 hours, then the intermittent communication group would be taking a look at each other's work about every 20 minutes.

(edit: I checked again, and caught it - looks like I was being generous in my time assumptions. An entire trial lasted no longer than 14 minutes. The "constant" group was checking in with each other at least every 50 seconds, and the "intermittent" group at least every 2.5 minutes.)

It's still an interesting result, mind. But it's not going to support anyone's position on the value of daily stand-up meetings.
Sunken Warship Likely Part of Cryptocurrency Scam
The flip side, and I bet more people see it this way than you think: I see the value and fruits of the labor for the data collection Google does on me: Unlimited storage emails and photos, the absolute best mapping application on the market completely free, the best search engine on the market completely free, most of their developer APIs like google reverse geocoding completely free for modest traffic, realtime traffic updates completely free, office products completely free, etc.

What did Microsoft give me? Locked down ecosystem, a subpar OS, expensive office products, and a paid-for vendor specific development ecosystem that is frequently becoming just a copier of the emergent industry trends, and a feigned attempt to embrace open source (capture market share) with cringeworthy bumperstickers displaying "Microsoft Hearts Open Source"
Technology, Environment, Money

Technology - I won’t either accept a job or stay at a job where the technology stack is not marketable.

Environment - Commute time, company size, level of autonomy.

Money - I work for one reason, to get paid.

I don’t really care about healthcare benefits. I get those through my wife. If there is no 401K match or the 401K match has more than a 3 year vesting, I want a hire salary.
I think the key quote here is :

> "Listen, the very last thing I want is to sound ungrateful. At that first job, I learned all of those things I listed, and more, because the senior engineers patiently sat with me and put up with my stupid questions and never got frustrated with me, even when I got frustrated with myself. But it took me more than a year."

So, you tell me a company succesfully trained you, fresh out of school, in a little more than a year ? It seems to me their recruitment process was actually very good !

Had they pick someone clueless about maths, but good at everything else you listed, they may have never successfully trained her in years.

Of course, maybe maths wasn't relevant at all for the job, in which case it probably was a bad process still, but without more information, it looks correct to me.
Reverse a binary tree, check if a linked list has a loop, find common parent of two elements in a binary search tree.
Only three others, scaled back from a dozen or two a number of years ago:

https://sinfest.net (I learn a lot from the two forums)

http://www.penny-arcade.com/comic

http://strongfemaleprotagonist.com/

Strong Female Protagonist is a wonderfully fun—and deep—look at the world of superheroes.

Edit: lists.
I came across a guy on Reddit a while back who was currently employed at Facebook. He thought he'd try making a video of him doing one of Facebook's interview questions thinking it'd be easy for him to do. He stumbled through the problem and didn't end up solving it in the timeframe that would have been allowed.

It was good of him to still post it but it showed that someone currently employed at Facebook would have been screened out at the phone call stage had he applied again without any preparation.
See also: https://en.wikipedia.org/wiki/Negative_temperature
I agree, I think the last bubble was when everyone was talking about it. Everyone wanted a piece and people were buying bitcoin hearing about the massive gains. I guess that's when the whales took profit.

The focus now by the whales to broaden the ~~sucker~~ buyer base via the ETF's.

The blockchain buzz has also been correlated to the bitcoin price. Both seem to have gone done.
You're telling people to buy when the price is low? I think you might be on to something here...
Only if you think markets accurately value things, which is to say you think there aren't bubbles.
> In theory, this sounds great, and I am a huge proponent of functional programming. In practice, I've never seen it intuitive or useful. […] Is there any meaningful work being done to address this, or is it perhaps a boiling frog scenario?

That's how Elm works and it's glorious. IIRC there are also clojurescript systems working that way (application state is an atom and updating it is a transactional CAS).

But of course it also helps that the language itself lends itself to this, so you want a language which is expressions oriented and there persistent data structures are the default (or even the only) option. You can do the same thing in e.g. Javascript, but the language doesn't really help and it's easy to slip.
"Baking soda water"? Is that like "Boil your pasta in saltwater"?

Ratios on these things are essential. If you don't supply a recipe, you're being aggressively unhelpful.

10g per liter.
Video: Nvidia Announces Turing GPUs and CUDA Toolkit 10 – InsideHPC
There's no reason to expect more kinds of interactions; the laws of physics were the same then as they are now. It also isn't clear that there would be more interactions. Galaxies hadn't formed, even if we stipulate that stars could have. So, the good: wherever a planet forms it should be warm enough for life (although it could still be too warm if it's close to its parent star). The bad: There are probably far fewer planets and ingredients for life and there is precious little time. For reference, for intelligent life to form during this period, it would have had to have done so at a rate of about 500:1 compared to the evolution of homo sapiens on Earth. Even life evolving in this narrow window would be difficult (~50:1 compared to on Earth).
> You could say the same thing about any currency, future or derivative

Not really. Derivatives have intrinsic values. There are fundamental properties that push their prices into certain equilibria. Currencies are more complicated. But between interest rates, which all modern currencies natively support, and characteristics of the underlying economy, here too one can derive boundaries.

Cryptocurrencies don't have this because (a) they don't natively support rates and (b) have a poorly-defined exclusive economic base (if it exists at all). So you end up with a number that jolts around pretty much purely on animal spirits.
National currencies are backed up by needing to pay taxes in them. Sell a car for bitcoin and the IRS still needs it's cash.
...because his appeal to the Supreme Court was denied, and he’ll be unable to avoid serving the rest of his life in prison, so a conviction would serve no purpose.
I see them emerging as Russia's Italy - look at how Germany and Italy treated each other in 1934 vs. 1938.
I wouldn't think the normal standard issues with glitches and synchronizing signals would happen with OpenCL. The synthesizer should have enough information to handle all of that and spit out max timing on the other side.
Pro Designer Critiques Trump's Space Force Logo Designs
Blockchain Entrepreneurs Club South Africa Is Hosting #SurfingTheBlock in Durban
No, defcon has no age requirement.
The mining cost shouldn't really have any bearing though - mining cost follows from market valuation, not the other way round. If the market goes up, it becomes more profitable to mine, more people start to mine, the mining cost rises to meet the new value.

But there's no feedback to the market if, for instance, power prices go up and mining becomes more expensive. The least efficient miners must simply either mine at a loss, or drop off until difficulty readjusts downward and those who are left are back in profit. More expensive power wouldn't affect the market price of a bitcoin.

--edit-- Because it doesn't affect the supply, the same number are created either way.
Just a hunch, but maybe you could try searching outside of SV.
Form is definitely important to preventing injury, but that doesn't mean you need to hire a trainer. Trainers can be quite expensive, especially when you are first starting out. Trainers in my experience are a better fit when you are already pretty serious and need direction to "get to the next level" or need assistance like rehabilitation therapy.

Most good gyms will have some people on staff that can help you with questions about good form. If you are unsure about good form, ask someone that works at the gym if they can come give you a look over and give some pointers.

Also, there is a reason there are mirrors all over in the gyms; it's so you can watch yourself to make sure you have good form.

One last pointer; start light. Lifting too heavy will lead to bad form and injuries. A classic example is curls; people lifting too heavy on curls will throw their back a bit on the lift and injure their back. So start light, watch your form, and slowly add those weights.
It's pretty easy to understand: Windows is closed so you'll never know if they're tracking you and if you find out they are, there's nothing you can do about it.

His post was flagged, so it looks like HN agrees with me about his whataboutism.
Good form is key. I never used a trainer, but there are a lot of videos on youtube that outline common pitfalls and there are places like reddit's formcheck where people can critique your lifts if you upload a video.

Starting with low weights and working on form for the first week or two while video'ing yourself and comparing yourself to instructional videos will allow for self critique.

I personally never had a trainer, but have had good success with self critiquing.
What you are missing is that rate of improvement often matters as much or more to happiness than absolute quality. In your 20s, it is easy to make rapid career progress. By the mid 30s, most people's careers have plateaued or are progressing much more slowly.
Proof Theory
It's really fun to observe the generation that grew up without the circumflex accent. I have heard some bizarre pronunciations on Turkish TV particularly with the young reporters.
The motives behind collectivization weren't purely productivity. There was a substantial political impetus as well.
Usually in situations like this the person asking the interview question already has already built the system in production that uses that heuristic and saw that it worked. with a good set of rules of thumb a smart person should be able to propose reasonable heuristic solutions that have a chance of working
Is it a crime to create a wiki website this much effortless
I also want to see how you guys solve these problems. People on youtube videos already know the answer. They just told you how to solve it. But I can't see how they approach to get the answer. I think that part is the most interesting and valuable part for non-talent like me.
Not an unsolved problem, but allegedly a new solution: The Gauss sum of integers from 1 to 100.

https://www.nctm.org/Publications/Teaching-Children-Mathemat...
What about the Netherlands, with 20% of the population living below sea level, waiting for the day the dike breaks?
Airbus Solar-powered aircraft stays aloft for 25 days
I'm surprised he doesn't talk much about direct cost (rather than engineering cost). A decent FPGA developer kit will cost several thousands of US$, more expensive even than high end GPUs.
More details in profile - https://griffin.sh
Thorough analysis of system-wide changes from infrastructure to peer-to-peer
“Required reading. A dangerous label, that.”
Malala Yousafzai hablará en VMworld 2018
We don't hate whiteboard problems because they aren't fun. They're obviously fun for some people.

We hate them for interviews because they're a terrible signal for hiring, they're often poorly administered, they're humiliating, they discriminate against introverts, and they've become frustratingly common.

They unfairly mess with people's livelihoods. It is a really big, life-altering issue for some people.
STRIPS was the original algorithm Monolith used for fear. The interesting thing about STRIPS is that it uses A* pathfinding to solve a decision-making graph.

More info: http://aigamedev.com/open/review/planning-in-games/
By the time we get to the whiteboard problem we've already assessed technical skills as well as we can. The whiteboard problem is to test their fit on the team. It has worked well for us and certainly weeded out some people who could have been problematic culturally. Is that a "failing?" Maybe we lost some more technically skilled individuals that way, but our team isn't exactly lacking because of it.
Because they think false positives are really bad and you can always reapply.
In the US, your company would purchase insurance, and then bake that into the price.
When I was a child, I was hospitalized for some issues. I spent a week there, and I only got worse. The Drs would dance around the questions when my parents asked to have me moved to a different hospital.

At the end of the 6th day, my dad told them he was going to take me to a better hospital whether or not they agreed. (There was more words, but that's besides the point).

Within an hour there was an ambulance taking me to the next hospital. If my dad didn't force their hand, I would have died later that night. All because they either didn't care, wanted the money, or were actually that shit of Drs.

This story makes me angry.
> More expensive power wouldn't affect the market price of a bitcoin

This seems intuitively wrong. Production and marginal costs are always factors.

If power goes up in value, it becomes more expensive to produce new Bitcoins as well as process transactions. That would feed into prices, fees and usage. The strength of this signal might be obscured by noise, but that doesn't mean it isn't there.
Detroit engine is 100% proprietary. Hopefully, Quantic Dreams and David Cage will share more in time. But there are still several generations of DLC to be released ;)
Has anyone tried massage for lower back pain. Did it help?
BALL-PITS and CLOWN NOSES

I worked with a guy, Bob, in our college computer room. Bob had returned to get his BS after many years in industry. He had great stories. He also had great advice. He taught me that you can learn a lot about how a company will treat their employees by paying attention to the way they treat you during the interview. He suggested several sign that indicated it was best to just "walk away".

If you go into a restaurant for a professional lunch meeting and they have a ball-pit / swing set /etc. it might not be the most professional place to hold the meeting. Just walk away.

If you go to a 5 star restaurant and they want you to wear a clown nose (Everybody Does It!) Just walk away.

The big scam is "We hire the best and the brightest". "We mandate a whiteboard test (Everybody Does It)". It is my opinion (based on experience) that companies that insist on a whiteboard test, despite years of programming on your resume and open source code, are either Ball-Pit companies (who don't know what it means to be a professional) or Clown-Nose companies (who know what it means to be a professional but still treat you like a commodity). Just walk away.

When you object, please reference one study in a journal that shows that whiteboard tests are effective in any measure when used during interviews.

I understand why Google does it. I've even interviewed there. They get thousands of resumes (which they never read, at least nobody did at my interviews). They have to weed out the "learn coding in 6 weeks" crowd. But you're a professional. You should expect to be treated like one. You don't ask your surgeon to cut up hams in an interview. You don't ask your builder to nail two boards together. Professional accountants are not interviewd by bank tellers and ask to count change.

Google, like Microsoft before it (remember the "why are manholes round? quizes?"), have combined the marketing claim "We hire the best and brightest" with the ball-pit mentality of whiteboarding. Google HR (sorry, People Resource?) SHOULD be embarrassed but apparently they, and upper management, LIKE ball-pits.

A real professional interview involves a discussion about what the company does, what it current problems are (aka why are they hiring), and a discussion of if you, as a professional, have the skills to solve the problem. What do they need? How can you contribute? It is likely that your interviewer has no idea what you are being interviewed for and cannot answer these basic questions.

We, as professionals, should consider whiteboarding as an insult.

Just walk away.
A helpful Venn Diagram:

http://flowingdata.com/2010/10/22/privacy-and-the-internet/

I've had that in my Privacy & Security slide deck for years. I say unless you're willing to go to EXTRAORDINARY lengths, there really is very little privacy. IT's been gone for years. Maybe new laws like the GDPR will help push things in the right direction?
Honest question: what is affected by the mining capacity? The speed of transactions? The price of transactions? The creation of new coins?
All-Day-Witit – All Day Witit. Listen Cdbaby
It's difficult to tell, given that China is a dictatorship, but there are some in the party and state that are perhaps opposed to Xi seizing so much power.

Good article on this: https://www.economist.com/china/2018/08/11/how-to-read-summe...
I see it like getting into a top college. Would your average college student be able to get a 2300+ (1500+ ?) SAT score if they had to take it again? Probably not unless they re-studied and prepared for it - which I think is the same answer for FAANG engineers and whiteboarding questions.

Also, good SAT scores don't always translate into good college students and the same could be said for good whiteboarding skills don't translate into good software engineers or vice versa.
Engineers standing under the bridge during tests is still a tradition

See from 16:45m https://www.youtube.com/watch?v=KHjC0l9nJOg