skysight-inc/HackerNews huggingface dataset:
No, its not. A huge amount of reinforced concrete is repurposed on-site to make aggregates for building. This means its destructively ground down in machines and the steel is usually removed for smelting. At this point, the plastic is going to be light chaff and will disburse.

Concrete buildings have a 50 year life, but after 50, the concrete becomes aggregates, and this is going to liberate a lot of the plastic binder used.

Binder in concrete is really good, it can help in earthquake zones and fire zones to keep building integrity, its also very possibly useful for penetrating shock events on concrete which some people face. So overall I think it is sound to use known quality plastic fibres in concrete for the additional strength, but we have to beindfull of full life effect: its good for now, it has consequence in 20-50 years time.

(S.O proofreads civil engineering papers on GRP reinforced concrete, earthquakes and fire safety engineering)
> I’ve been fortunate enough to travel to over 12+ countries...

c'mon. you must know how many countries you've traveled to. just look in your passport or something.
Right, you'd need to scrape HN real-time to get a detailed posting history.

About sleep schedule. I really don't have one. I work and sleep when I feel like it. And I nap. And I have modafinil and zolpidem available. And coffee.

If you charted my waking and sleeping times long-term, you'd find pretty much a random walk. I can be up as much as 30-40 hours, or as little as ~1 hour. And I can be sleeping for anywhere from ~1 hour to maybe 15 hours or more.
Yes, so that is consistent with what I have read previously on the internet, that they are overlapping terms, but what I see empirically in restaurants where I live is that the terms are correlated with two different clusters or modes, and I tend to prefer the ones that are called "palak". Yet you might logically assume that means that I like spinach and the others have different types of greens. I don't believe that is so; it's the rest of it that is the major difference, not the greens.
I agree this a pretty choice.
This is absolutely hilarious and I've never heard of it. Thanks!
I’m not sure why you’re being down voted because you are breaking any rules as far as I can tell, but I must say: after reading your comment, I feel very sorry for you. We only get one chance at life and I want my kids to spend it being happy and fulfilled, doing things they love. I see no reason to prepare them for being Silicon Valley wage slaves at ages 4 and 7. Even if they did want that for themselves, they don’t need to worry about it for a long time. I didn’t own a computer until my junior year of high school and here I am, a principal engineer for a big SFBA tech firm.
Yeah, that came to mind for me as well / seems like a pretty serious drawback to say the least.
> 1. I’ve seen people overclock using liquid nitrogen

Heck, when I was at Intel we used to do that in the lab. A copper cup full of liquid N is a great heat sink!
Maybe, let's see… Your N2 is going to evaporate to a gas, cooling your stuff. The heat moved is going to be the "latent heat of evaporation" which is 199kJ/kg. The gas will be at -195°C with a specific heat around 1kJ/kg, so about 195kJ/kg for to get to 0°C.

Your CO2 is going to sublimate straight from a solid to a gas. The heat moved is going to be "latent heat of sublimation" which is 199kJ/kg. This is only going to be around -78°C and also has a specific heat around 1kJ/kg, so about another 78kJ/kg.

Ok, that seems suspicious, the phase change energies are the same, but it appears to be a total coincidence.

So… if we can hold on to the gas and warm it up before releasing it, then liquid nitrogen wins with about 400kJ/kg compared to 280kJ/kg.

…but depending on our insulation and volume, we may find that we are making a lot more gas than will fit in the cooler so we can't make use of the gas, in which case both choices are about 200kJ/kg.

If you could just keep CO2 from sublimating it would be a huge winner at combined melting and evaporating energy of about 840kJ/kg… but that's why it would rather sublimate.

In the boring category though, water really rocks at 334kJ/kg to melt, so if you supercool your water ice to liquid nitrogen temperatures before leaving you will win.

For safety: Liquid nitrogen needs some special care. If you put your cooler in a small tent, and evaporate off a couple kilograms of liquid nitrogen over night you may not wake up in the warning. The higher nitrogen content of your stuffy little tent will displace oxygen and your body doesn't have a "low oxygen" detector built in. You just die. In contrast, your body does have a "high CO2" detector built in and you would likely have trouble breathing and open the tent flap.
> 1:6 which is more natural than 0:5 (from the 0th to the 5th)

This is again just begging the question. When you want to refer to the initial element as the "1st", it is due to the established convention of starting to count from 1. The point is that the reasonining for starting from 1 might only be that: conventional, not based on some inherent logic.
Attacks on Arsenal players shed light on Britain’s diverse underworld
Sorry, yes, Scala. Autocorrect changed it and I didn't notice.
Beware of comparing the data with other countries as the definition for what looks like the same terms is hidden in the details. Infant mortality is one area where there are some fundamental differences in definition (yeah, this is a surprise). Guns are a far cry in danger from quite a lot of activities.
I've had this idea before and I would have named it "LastBreath" or "Low Chattery". But their name is good too.
OK, Microsoft knows that some persona uses Tor. So what?

Sure, mine is "regular". In the sense of regularly random.
I have an XKCD bookmarked for this exact thing - with quotes as far back as 1871 about how modern life is just too hectic

https://xkcd.com/1227/

Notable quotes such as:

> It is, unfortunately, one of the chief characteristics of modern business to be always in a hurry. In olden times it was different.

-- The Medical Record, 1884

> If we teach the children how to play and encourage them in their sports ... instead of shutting them in badly ventilated school rooms, the next generation will be more joyous and will be healthier than the present one.

-- Public Opinion: A comprehensive summary of the press throughout the world, Volume 18, 1985

> Our modern family gathering, silent around the fire, each individual with his head buried in his favourite magazine, is the somewhat natural outcome of the banishment of colloquy from the school

-- The Journal of Education, Volume 29, 1907
Yeah I tried to quit programming to join the food industry once. It was incredibly depressing, and a huge bump to the number of sleazy people I had to deal with. Think sexism in tech is bad? My wife worked on construction sites, where sexual harassment and corruption were rampant.
Makes sense. I suppose no need trying to quantify more specifically if we're nowhere near that line.
No sane person would use Chrome/Chromium and Google, and expect privacy.
Sure, attitude, work ethic, communication skills, and professionalism are required as well.

Technical skills, attitude, work ethic, communication skills, and professionalism are really all you need to work with your colleagues successfully. Hobbies, pet preference, and exercise preference is irrelevant.
Ah quite possibly, didn’t see! Anyway, book did come out in June
This feels like an awfully familiar story. I do wonder if there aren't enough resources allocated at google to handle these types of cases. Instead we have them ending up on HN to reach some type of fix/closure from the google team.
Yes: that technological progress is the driver of societal health, the middleman between human population growth and the end of human problems-- techno-progressivism and transhumanism-- looks to be the operating framework when space exploration is talked about among my peers. It's not (just) that it's boring to suggest that "missions to Mars should be considered unaffordable luxuries until everyone has adequate shelter, nutrition, and healthcare, and is free from violence and exploitation" or "before getting to put our energies toward the search for other life, and the better understanding of the universe, we have to avoid boiling the planet alive or vaporizing each other in a nuclear holocaust [1]," it's impossible, without more technology.

[1] https://www.currentaffairs.org/2017/12/this-little-rock-and-...
A lot of houses in Amsterdam date from around the same time as the founding of New Amsterdam
It gives the US a very big advantage. How?

1. The US never has to produce anything to buy oil. They can just print dollars and import oil. Another country, say Bostwana, has to produce something else, sell it to another country in exchange for USD and then they can buy oil. This is a significant crutch

2. The US will never have a shortage of oil before other countries do

3. The US can import anything it wants, whenever it wants. Say a year with bad weather caused low corn production. That will not take down companies dependent on corn. US can always print USD and buy corn from somewhere. Compare that to Brazil, who would just have to suck it up since they don't have enough USD in reserves to go import corn.
Make ice cream? I haven't done it since college, but you basically put milk and sugar and vanilla in a big shallow pan, and then pour in liquid nitrogen and mix.
Well, it's not exactly free money, it's free travel. If you can sell it, it's free money.

If you were going to do it anyway, then yeah, by not spending the money you come out ahead.

I guess I don't really live that sort of lifestyle. If you gave me $1K in flights I'd have no use for it (which I think comes hand in hand with not paying the $5K in the first place - consumption is expensive).

If you could buy shares on a credit card I suppose it could make sense.

When I was younger, I signed up to a bunch of accounts in the UK that paid benefits. You could get 10 quid a month from Halifax, multiplied by three. Possibly six, I don't remember now.

That actually was free money. There's still stuff like that around, but being a software developer is better paid. And more interesting.
Probably when you were a kid the global population was around half of what it is know, i.e. twice the amount of space per kid.
Assuming it's a team: http://notion.so/

It's a wiki / google doc crossover. It has a hierarchical side-navigation, tracks edits, supports inline tables/embeds, multiple users, sharing documents.

Nice editing system. It uses "blocks" of content that can be indented.

It has a full desktop app on Windows and OS X.

(Apparently there was a mention in an similar thread 10 mos ago: https://news.ycombinator.com/item?id=18112140)
>Youngsters these days

What a marvelous start, good luck looking trustworthy. It's straight up the same as it was generations and generations before. I also love the emphasis on video games imposed in this article, from the very beginning.

I have a different opinion on this. While I can confirm that some team-based games can tilt someone, it's unlikely that it contributes to mentioned suicide rates in any meaningful way. It's just the same kind of "youngsters these days" activity as it was before. The actual reason may lie deeper in the current state of human society. Fearmongering by the crackpot young adults who still didn't grow up themselves is but one manifestation of what's happening in the bigger picture.

I'm ashamed to admit, being the part of this "young adult" generation myself, that we're a laughable bunch of irresponsible wimps, relying on everything but ourselves to relieve the stress posed onto us by the ordinary "adult" problems. As the result, some of us easily fall the cult-like mobs, failing to recognize the stupidity of our derived positions and causing problems to people around us while hypocritically stating that we just want to make the world better. Our generation isn't strong enough. We ruin each other and the majority of us is too immature to take care of our "youngsters", which is the real reason behind them going rabid or just straight out killing themselves.

We are the ruined generation and we ruin our societies, and what's more important, our kids, the ones who are supposed to be the next building blocks for it. And it's most probably our fault. Or wait, do the games cause that? It's always someone else's fault, it's the guns who kill people, not the other people, it definitely must be the case this time, isn't it? What a mess.
> dynamic bytecode loading from a local app resource

I'll bet you 5 bucks it's this. Your "anti-piracy" is their "evading our malware analyzers".

From the Terms of Service: "The following are explicitly prohibited: Apps or SDKs that download executable code, such as dex files or native code, from a source other than Google Play."

Can't tell obviously if that's the violation, but at least it's a good bet.
I love proto, but the textformat was an after thought. The binary format is rigorously defined, portable, extensible and optimized. The text format was reverse engineered from the c++ implementation after the fact when folks found textproto useful. Unfortunately there are discrepancies between languages around the corner cases of the textformat and that's the sad world we live in. Avoid letting textproto be part of your user exposed interface.
I agree with pretty much everything what you've said here!

> I much prefer to try to get us to speak in our own languages, even if it requires effort.

Also, when it does work, we'd get to experience the glimpse of the sense of some shared heritage (e.g. cultural, historical, etc) and at the same time we'd feel good about the uniqueness and differences of our own languages/cultures.

> Otherwise, I prefer to speak Russian if the person I'm communicating with knows it too.

If someone spoke Russian to me, I'd be a) very flattered and b) try accommodating them with their effort as much as possible.
For some items, yes.

On the other hand, most Asian companies (includes Chinese, Japanese, Korean, etc) are quite happy to use American software such as Google's Android OS and Apps because that costs them very little, and they don't have to go to the hassle and costs of producing it themselves.

Google gains because any income from Android and its Apps is very welcome.

America gains because that income is also received. Apart from any American sales to Asia resulting from Google's ads, such as various luxury brands, Hollywood movies, iPhones, etc.

Now when any Asian country is not permitted to use Google's Android, sure it costs them because they now have to expend effort and money to produce the equivalent to Android. But to offset that, they now get all the income from the Apps and sales of goods that America used to sell.

Not only that, but the Chinese/Japanese/whatever markets are taken over by Asian companies rather than American companies and American companies get squeezed out of Asia.

America too often has short-term or zero-sum thinking. Asia usually has long-term or win-win thinking. It beggars belief that Trump,etc complain that China isn't buying enough stuff while they refuse to sell them the stuff that China wants to buy. SMH.
This is a really interesting finding, but the conclusions seem a bit arguable.

Complexity helps individuals stand out in a crowd, but species markers make it easy to distinguish and find a mate in the first place. So it seems natural to me that declining population would lead to less complexity (due to less competition) and more reliance on the species markers (to help connect more disperse individuals).

There are also studies where captive song birds increase complexity in the absence of other stuff to do. So I doubt this is an irreversible change.
json's lack of int types is what ruins it for me
Heh... here I thought it was the original Segway company that was years ahead (using over-complicated tech) of the scooter trend!
What if the reason is they were scraping all your private data against the Terms of Service, and hiding it in obfuscated dynamic bytecode loading... if that was the case, you think it's still bad that they can be kicked off the app store?

I mean, we only have the developer's word that they weren't shipping malware in these bytecode files, unless someone reverse engineers it (unlikely), or Google publicly explains the reason for the banning (which they never do).
Game, set, and match.
This is going too far. I've lived and spent time in various USA cities: LA, Chicago, Boston, Dallas, Denver, etc. I never had any difficulty walking downtown after dark.
As non-native speaker of Spanish and French, the text is easily understandable, more so than written Portuguese or Italian.
If you want an idea of just how many doors your MBA will open, just look at the size of their career center. I'd it's staffed by a part time college intern, your MBA won't open the front door to your front even if you hand it the keys. I'd they're pretty big and matched up with a whole bunch of alumni, they are future donors after all, then that network everyone talks about building in school is something you can maybe tap into.
this seems like it makes json useful for logging, but not too useful as configuration. For instance, it doesn't support commenting, and it seems like every line needs to have all its children compressed onto one line?
They had apps like this during the early 2010s and they bombed hard.
iirc that is irc.

'member netsplits?
constraints bring creativity
Never read it before, priceless and true.
Elementary school these days actually put a lot of focus into making sure kids are used to the basic mechanics of using computers (typing, mouse-clicking etc...), which is all you're gonna at that age anyways.
And the required double quotes around strings. YAML’s string handling is a lot easier to deal with.
One career path I've always wanted to do is sales engineer. It's very much in demand. They have to hire people who have very high technical skills, but don't often want to do sales. You probably don't need an extra degree for it; the sales is the easy part to train.
> I don't have a US perspective, but someone who spends $1600 a month after rent in the UK is either financially suicidal or well off enough that they probably aren't fucking around with this sort of nonsense, they'll just pay for the holiday.

$1600 / month after rent is $19k / year. Add another $1500 / month for rent, and you're at $37k / year, hardly an insane amount for someone to be spending in the US.
I don't know what is "typical HN", but what you have linked to was only a correction in the table headings. They say in the correction notice that it "does not affect the data, only the table headings." They had switched "Model 1" and "Model 2" in the original.

https://pubs.acs.org/doi/10.1021/acs.est.7b06377
I remember a few years ago seeing the writer of https://thesizzle.com.au pop up in a forum asking for anywhere online where he could make small (sub $1 transactions ideally cent transactions.

I had a hunch it'd be for something to do with points.

Then this story popped up a little while later:

https://www.news.com.au/travel/travel-updates/nab-shuts-down...
Based on the headline I thought this would be an article about billionaires in their bunkers after we've hit 5c warming.

Good read nonetheless. Let's hope for some sort of reasonable resolution...
It does seem like you are usually incentivized to reject people, as an interviewer.

Nobody ever complains if you pass on someone but say that they were good at X/Y and might be a reasonable choice for role Z.

But people will jump down your throat if you let a subpar candidate through the funnel; I've been chased away from doing phone screens for being too charitable, because people got sick of their time being wasted every now and then.

If my experience is anything to go by, it's probably smart to avoid becoming an interviewer if you're overly empathetic. It's a role where trying to help people is usually the wrong thing to do.
I attended Racket School and I genuinely want to like Racket. It has utterly fantastic language oriented features like macros and syntax objects, really awesome people behind it and some surprisingly solid tooling. But it's just so hard to do anything "useful" in it. It's the Haskell problem. It's too fancy, too nice to do any nitty gritty work with it. It's a gilded shovel. Writing something as banal as a web server in Racket just seems like a waste. And anything "nice" enough to write in Racket is too niche to really gather wide appeal.

Compare this to Ruby, which, while not super popular, has gained a respectable following after a period of hype. Ruby can trick people into thinking that it's a nice, normal scripting language that you can show your parents. And you can treat Ruby as a normal scripting language. Only after a period does Ruby reveal its insane metaprogramming and dynamic features.

What I'm saying is Racket needs a little more stupidity in it. It needs to project an image of a good ol' language that you can have a beer with. That you can write a web app in. If that requires removing s-expressions, then fine. If that requires removing conceptual purity, then fine.

Racket certainly still has potential. There's quite a lot of DSLs in modern programming. Whether it's the adhoc configuration based DSLs of Docker and DevOps in general (I hate Docker's weird pseudolanguage so so much), or GraphQL in web servers, there's definitely places for Racket to shine. It just needs to get sullied by the messy, imperfect, stupidity that is industry.
> Well, it's not exactly free money, it's free travel

It's free money even if you don't travel. 80,000 chase points is also worth $800 cash directly. They just boost it %25 if you use it for travel through their portal (I suspect that you don't get the best fares through their portal though, so that boost seems like it might be a wash).

> You could get 10 quid a month from Halifax

The city?

> but being a software developer is better paid

Unless you make $700-$900 (subtracting the $95 annual fee) per minute (the amount of time it takes to sign up) while working, working really isn't better per amount of time spent.
I sympathize with your intent, but when I was a poorish, urban black kid (30-40 years ago) we were completely free range. I was raised by a single mother who didn't even make it home from work until 7:30-8:00 (like many), and my range was anywhere within a mile or so of my house from probably about 12 years old on.

It wasn't a luxury to be unsupervised... the black people I knew growing up didn't really have a culture of oversupervision to rebel against. We were expected to be able to handle ourselves.
You seem to believe there is only one way of happily living, and thank goodness it's the way you were raised!

How entirely fortunate for you and now your children, and fie on those who might believe there is some way to incorporate the last 30+ years of technology into raising happy children.

I genuinely feel bad for your kids, because they're not going to get the kind of upbringing they could have had where a healthy relationship with the actual world is fostered and encouraged. Instead they're stuck living in this pretend universe where computers are evil and responsible management of their time and attention is taken care of for them.
Aha! It was the powerful hat lobby all along!
Well, this is "hacker news", and I imagine there are quite a few people around who have plenty of first hand experience with programming but not so much mathematical proofs. And there are a lot of examples of "a few stones placed incorrectly" taking down a huge edifice when it comes to software.[1]

So it may be true that math doesn't work like that, but I don't think it's obvious why. Many people have suggested that software would be better if habitually proved correct, but then, why is it not 100% necessary that proofs be perfect? Why should proofs be more resilient than software?

[1]https://gcn.com/articles/1998/07/13/software-glitches-leave-...
Sounds like a fertile new market for microtransactions