skysight-inc/HackerNews huggingface dataset:
tl;dr: oxytocin is a double-edged sword.

http://www.pnas.org/content/108/4/1262.full

# Oxytocin promotes human ethnocentrism

## Abstract

Human ethnocentrism—the tendency to view one's group as centrally important and superior to other groups—creates intergroup bias that fuels prejudice, xenophobia, and intergroup violence.

Grounded in the idea that ethnocentrism also facilitates within-group trust, cooperation, and coordination, we conjecture that ethnocentrism may be modulated by brain oxytocin, a peptide shown to promote cooperation among in-group members.

In double-blind, placebo-controlled designs, males self-administered oxytocin or placebo and privately performed computer-guided tasks to gauge different manifestations of ethnocentric in-group favoritism as well as out-group derogation.

Experiments 1 and 2 used the Implicit Association Test to assess in-group favoritism and out-group derogation.

Experiment 3 used the infrahumanization task to assess the extent to which humans ascribe secondary, uniquely human emotions to their in-group and to an out-group.

Experiments 4 and 5 confronted participants with the option to save the life of a larger collective by sacrificing one individual, nominated as in-group or as out-group.

Results show that oxytocin creates intergroup bias because oxytocin motivates in-group favoritism and, to a lesser extent, out-group derogation.

These findings call into question the view of oxytocin as an indiscriminate “love drug” or “cuddle chemical” and suggest that oxytocin has a role in the emergence of intergroup conflict and violence.
Only good thing is that it can take a lot of charge cycles, otherwise it's worse on all aspects, than even traditional lead-acid batteries.
Here's a nice marketing video about the development of the machine: http://www.youtube.com/watch?v=78rxgkC9naA
The best protection against this is ... to create a hundred million files in /aaa/ ?
> I’d always heard amputees talk about the stares and the acute awareness of being viewed as different. During my first shoot for the NewsHour with one arm, I was wearing a blazer when I met a researcher I was to interview. She left the lab, and I took my jacket off. When she returned, it was a good thing she wasn’t sipping her coffee, because she would have offered up an amazing spit take. As we both looked at my stump, I shrugged and said, “It happens.”

I can relate with him on this. I lost the distal phalange of my left thumb when I was about 6. It is not very evident, but every once in a while colleagues discover that, and ask "what happened to your finger". My story has getting shorter and shorter as years pass... nowadays it just goes "I lost it in an accident". I stil feel uncomfortable phasing that question.
Security of Symmetric Encryption against Mass Surveillance [pdf]
Do Brits really say "bungs dinner in the microwave" ?
Classic Hacks: A Report on the Internet Worm (1988)
I disagree. You're anonymous to these guys, you're just another possible lead. When you're further down the road, these guys will continue to try any means to talk to you no matter what - even if you write 'Recruiters - Please don't contact me' all over your profile.

It's not a sincere relationship at all - they're just trawling through their latest LinkedIn Premium search.
Shudder to think of the military applications of this
I think it doesn't make sense at all or is at least very dangerous to build a business having a third party as a single point of failure at any point of its core operations.

To generalize even more, a good long-term plan should be free of any kind of single point of failures.
TrueVault (YC W14) Is Hiring Its Engineering Lead
I started using these recently:

set -o nounset

set -o pipefail

set -o errexit

set -o xtrace

I added them to all my scripts, and I also added all except errexit to ~/.bashrc

The first one would save you from unset variables.
It's possible to do both, though. As I pointed out elsewhere in this thead, Sam's post is very helpful and to the point, but there is a lot of undiagnosed psychiatric illness in the startup world. Much of it largely self-inflicted by excessive pressure, lack of sleep and long hours. This is a point which is willfully ignored in this forum, so it's very worthy of being discussed.
The user agent is truncated in HTTPie.
I think domestic P2P platforms are a big untapped opportunity in developing countries, especially large ones. They are still rare; Fairplace in Brazil is a notable exception.

An international platform like Zidisha can offer a different value proposition, in that 1) we enable arbitrage in purchasing power parity between wealthy and developing countries (the price of dinner at an upscale restaurant in America could finance the startup of an entire restaurant in Kenya), and 2) our users value the chance to connect with an ordinary person on the other side of the world, learning about their culture, socioeconomic realities, etc.
While it may be true that the villagers knew everything about each other, the king had no way of knowing their utmost secrets. Heck, he probably didn't know their names, or how many of them there were exactly. The situation is different now, the boundary of locality has been dissolved.
I like what you did there ... but when the wall is finished, if there isn't another to build, then there are no more bricks to lay. Or is that not a problem, since the new cause of joy (brick-laying, not wall completion) is one which was continuous over an extended time?
(Disclaimer: I know very little about either Vanadium or the alternatives I will suggest, so these are the opinions of a lay person on the subject)

Why is yet another mineral we have to mine, then presumably buy from an industry that will become another iteration of today's energy giants, the solution?

What is wrong with present methodologies of energy storage? For example using surplus power to pump water up hill, to later recuperate during peak hours? Or heating water? Things of that vein that're obviously not efficient, but trivial enough to implement for single buildings (whether a house or a sky scraper) without needing any change to infrastructure.

To be clear, what I'm against here is the creation of demand for yet another substance we'll despoil the planet some more for. Mines are festering wounds upon the planet. And I seriously doubt harvesting sea creatures will lead to anything more than the same sort of damage inflicted upon a seabed already scarred by dragnets.

Edit: From reading further, and to answer my own question, the problem is that all research in this field is geared towards the identification of materials or energy sources that can be commoditised.
I think "bungs" is interchangeable, but yes.
This Painstaking Recreation of Star Trek Redefines ‘Obsession’
Knight describes the color changes as the vanadium is reduced - yellow -> green -> blue -> violet as the vanadium receives electrons from the zinc. But then later, he describes the battery. "In one tank, the vanadium releases electrons, turning from yellow to blue." At least one of these statements are incorrect.
http://www.reddit.com/r/linux/comments/27is0x/rm_rf_remains/... is the link on his blog. Great read.
Analysis of a Wi-Fi Hotspot Network
I've started taking the Beeb Elite apart, so far as far as the text printing routine: http://xania.org/201406/elites-crazy-string-format

And of course if you want to relive the glory in your browser: http://bbc.godbolt.org/?disc=elite.ssd&autoboot
As a python dev, I use pip all the time. My first thought was, "nice, just use pip." I appreciate your comment because it helps remind me that people approach problems from different frames of mind.
The article states that peak demand is the evening... I would have thought peak demand would have been during the day when large factories are operating at peak output.
and Hacker News does not present me with older posts in the thread, so I literally had no idea you did that.

So, despite what I was saying, you never thought to go back over the words that both I and the OP said, and reconfirm that they were what you thought? That's just poor form from the outset.

a whole lot of guff in the middle I'm skipping because it's reiteration on both our behalves

.

What? What is this, kindergarden? Do I have to apologize to you for disagreeing with your argument and pointing out a logical fallacy?

Apparently it is kindergarten, because you would have me admit my 'wrongdoing' to satisfy you, but it's somehow juvenile for you to admit yours. Oh, and once again you commit the very same sins you accuse me of - I never asked you to apologise. I asked for some indication of self-reflection. Yet here you are putting words into my mouth, the very thing I supposedly did that started you in this thread. You really are quite the hypocrite.

The fact that you went on the defensive instead of appropriately responding to my criticism does not make my criticism something that I need to apologize for.

I guess changing my original wording to match your request doesn't count as 'responding appropriately'? That you never went back to reclarify what had been said between all three parties is bad form on your behalf. Particularly when the topic is about the meanings of words and phrases, it behooves you to go back and ensure you're clear on the matter.

In any case, for all you like to say that you haven't been rude here, you've been outstandingly rude. You haven't used profanity, but you write fluently enough to be fully aware that it doesn't require profanity to be rude. It's rather very obvious how stupidly and meaninglessly rude you've been in this preposterous conversation.

Or pehaps we disagree on the definition of 'needless', and you think that it was needed for someone to be rude to me as you have been?
"Metallic vanadium is not found in nature, but vanadium compounds occur naturally in about 65 different minerals. Economically significant examples include patronite (VS4),[26] vanadinite (Pb5(VO4)3Cl), and carnotite (K2(UO2)2(VO4)2·3H2O). Much of the world's vanadium production is sourced from vanadium-bearing magnetite found in ultramafic gabbro bodies. Vanadium is mined mostly in South Africa, north-western China, and eastern Russia. In 2010 these three countries mined more than 98% of the 56,000 tonnes of produced vanadium.[27]

Vanadium is also present in bauxite and in fossil fuel deposits such as crude oil, coal, oil shale and tar sands. In crude oil, concentrations up to 1200 ppm have been reported. When such oil products are burned, the traces of vanadium may initiate corrosion in motors and boilers.[28] An estimated 110,000 tonnes of vanadium per year are released into the atmosphere by burning fossil fuels.[29] Vanadium has also been detected spectroscopically in light from the Sun and some other stars.[30]"

"Vanadium metal is obtained via a multistep process that begins with the roasting of crushed ore with NaCl or Na2CO3 at about 850 °C to give sodium metavanadate (NaVO3). An aqueous extract of this solid is acidified to give "red cake", a polyvanadate salt, which is reduced with calcium metal. As an alternative for small-scale production, vanadium pentoxide is reduced with hydrogen or magnesium. Many other methods are also in use, in all of which vanadium is produced as a byproduct of other processes.[31] Purification of vanadium is possible by the crystal bar process developed by Anton Eduard van Arkel and Jan Hendrik de Boer in 1925. It involves the formation of the metal iodide, in this example vanadium(III) iodide, and the subsequent decomposition to yield pure metal.[32]"

Source: https://en.wikipedia.org/wiki/Vanadium#Occurrence

So not only is extracting this stuff going to involve mining, the process of extraction itself relies on extremely toxic substances, and the most economic areas to mine it are places it's less than prudent to rely upon economically (China, Russia, South Africa)
We have experimental Python support now! blog.codecombat.com/new-experimental-languages-python-lua-clojure-and-io
Unless I have miscalculated, a phone battery has the energy equivalence of less than a milliliter of gasoline.
Same in Madrid. Twice entrepreneur. Not an expert but I know what it is like. Coffee or a beer, whatever is good.
"Lack of smashing and fixing windows may be hurting the economy"
Awesome Tips On How To Get More Out Of Your Content Marketing Campaigns
GHash doesn't - and that's why they will figure out a way to dip below 50% again.
Is it right to jail someone for being offensive on Facebook or Twitter?
> With something like Twitter, I get it. In order to make money off their customers' use of Twitter's free service, they need to be in control of the customers' experience (so they can do things like show ads)

Twitter didn't need to close the API to make sure ads were shown they just needed to make sure API developers knew there were certain messages they weren't allowed to block. The whole control the experience is a poor excuse for killing an ecosystem that got the company to where it was.
Being primarily used to, and mainly using Linux.

Then using the killall command on a Solaris box, which just happened to be running the company's Oracle database...

Cue the support line phone ringing off its hook.

Cue BOFH Excuse : "Hmm it appears the server running the database has crashed. We're rebooting it now", etc etc.

Lesson learned : killall on a Sun/Solaris box behaves VERY differently from the killall on Linux :D
Hello :) author of the proposal here, if you have any question or comment feel free to ask!

Users that trust https://GreenAddress.it can check the instant confirmation inside their wallet (on a UI 'badge' similar to the N confirmations or unconfirmed).

While some platforms are interested in the instant confirmation some will take longer or won't.

For this reason and for external wallet users you can still manually check if a specific transaction is instant via https://greenaddress.it/instant provided that you are the recipient of the transaction and can prove it - and of course that you trust GreenAddress to not allow users to double spend.

The external instant confirmation link does not work for multisig or P2SH external addresses yet.

Link to the reddit discussion http://www.reddit.com/r/Bitcoin/comments/284me8/instant_conf...

Cheers!

Lawrence
A couple hours for one location in 6 years is hardly the routine occurrence which the original commenter was claiming
It's true that this may be one of most startling equations, but its far from being the concoction of the arbitrary approximation in the OP. This is just the special case of Euler's more general formula e^{ix} = \cos{x} + i\sin{x}, which can easily be derived from Taylor series for e^x, sine, and cosine.
Ahh, thank you - that is a very important distinction.
No, it's a reflow battery - meaning you can make the capacity arbitrarily large (literally you have a tank of one redox, a tank of another). Hopefully this will make it much cheaper for large capacities.

Yes, it's heavy for the capacity, but this does not matter for fixed installations.

Number of charge cycles & recycle-ability makes an enormous difference to the balance of systems cost for a battery.
That seems a bit short-sighted. I mean, if things spiraled so out of control that the earth had to be destroyed, why wouldn't it happen again?

I guess something other than water would have to be used next time :-)
Job Interviews Are Getting Weirder
Well persistence is a factor too. Say your display is updating at 120hz without low persistence... the image stays on screen for 8ms, so you have, say, 1ms of accurate image plus 7ms displaying an inaccurate image. For whatever reason our brains prefer to have no image rather than an inaccurate image, so it helps to turn off the display for that 7/8 of a frame.

While you can do that with LCD, you have to wait 5ms for the pixels to change before you can strobe, so your frame is an extra 5ms out of date. That's my understanding at least, I'm not an expert by any means.
I have an alias set for rm as follows, for the root account:

# alias rm

alias rm='rm -i'

It helps to prevent some stupidity, sometimes. Better than nothing.
GameOfLife in Swift
My first IOS8 Game in SwiftLang!
Another coincidence with pi and phi (golden ratio): https://www.google.com/search?q=4%2Fsqrt(phi)
Surely " ", as space is the lowest ASCII character you can reliably put in a filename. But only shell globbing is going to sort the output. Saving something from rm -rf of the superdirectory would require ensuring that the name pops out of readdir/getdents first, which is filesystem-specific and not always possible.
Tough Competitors Are Your Best Strategic Partners
Large industrial users don't vary their demand much, and actually change when they use it to fit the demand curves (i.e. Aluminium smelters).

Peak in the UK is early evening, when people are still working late & also people returning home (electric trains), heating houses, dinner, doing laundry etc.

http://www.gridwatch.templar.co.uk/
WordPress – Ο απόλυτος οδηγός ασφαλείας
Ask HN: Looking for feedback on my side project
I am looking for any kind of feedback on my side project template2pdf[1]. My main problem is to spread the word about the service without behaving or feeling like a spammer. I get a sign up now an then, some people are using the service on a regular base, so I guess I am not totally off with the product itself.

If you have the time and energy, please provide feedback on the following questions:

Do you understand the problem I'm solving? English is not my first language, if you have an idea on how to communicate better, please let me know.

Do you like the website itself?

Any idea on how to improve the sign up form? Should it be on the start page?

Sadly, I have not nearly enough visitors to do A/B testing, so I need people to actually tell me their opinion.

At the moment, you could actually enter a wrong email address and just start testing. Should I advertise that?

About getting people to know the service:

I'm not active on facebook, twitter or any kind of social media service that could help me to spread the word. Does anybody have experience in paying somebody to market to a target group there? Without feeling that this is somehow shady?

As a general question: How do you promote stuff without already established social media status while not behaving or feeling like a spammer?

Thanks for your time.

[1] http://template2pdf.com/
I've had very similar experience. I believe it was Oracle 7 and one smart guy tried to install it into the root folder. The only problem was that the install script did 'rm -rf $DESTFOLDER' at the beginning. Luckily for us, the script actually printed the commands on the console and the guy quickly realized what is about to happen. He aborted the install script but by the time /etc and quite a few other things were gone.

It was a Sun OS 5.1 I believe on a pretty big box (for its time) with A LOT of user data. We recovered it using roughly the same steps. We didn't need to write in assembler though since we've had Sun compiler tool chain in /opt that survived. At the end, we used a modem to connect the damaged box to another one with a tape backup. It took about 12 hours to copy the data over.
" “People can be asked to sing a jingle,” she says. Her advice to job seekers in 2014: “Have one ready that’s relevant to your industry. It shows that you’ve done your homework and react well under pressure.” "

Seriously ? I'm not sure about you but if I was asked to sing for a computer science job I would probably refuse and it wouldn't be the place I'd want to work
Why I'm sending 200 copies of Little Brother to a high school
>> "One of these statements are incorrect"

One _or more_ are incorrect :)
Lichess becomes the first chess site accessible to visually impaired people
In other words, the stars would have to align in order for this to occur.

I don't really know what GHash knows, but I can tell you that GHash's hashrate has dipped well below 50% only a day later, as it did when this happened before.
Oolite: Elite Re-Invented, Open-Source style
Numerical near-miss coincidences are to be expected when working with transcendental numbers. First reason is the pigeon hole observation others have made. The other reason is: this is one of the properties of transcendental numbers. Roughly: one technique used in showing a number to be transcendental is you show it is not equal to any term in sequence of algebraic numbers and yet closer to them than (without equality) than any algebraic number could be.

And this is something I never liked about a lot of "math puzzles." A lot of them point out some effect as surprising or esoteric when the effect is actually a specific example of something one should expect (given a developed mathematical intuition). In the end the observation is only hermetic or exotic to those who don't know math and ends up being a barrier to getting comfortable with known results and their consequences.
Unfortunately no, the project in question was specific to Netflix.
I believe Windows Vista tried to do exactly that: annoy user with security related screens all the time. This didn't go well because people were just clicking "yes" without reading and in the same time everyone was absolutely frustrated with these crappy alerts.
You should educate yourself about how the Tender Years Doctrine works as well as how custody is awarded to unwed parents if you think custody is not automatically awarded to the mother.
I had a friend in college who could not use his legs (he had polio) He never let it slow him down though. He travelled about 50 KM daily to college in a bus, sometimes standing on his support. Every one in our college knew him. From the canteen workers to the photocopier guy. Last time I talked to him he was working as a computer lab assistant. I can't even begin to think how difficult it is for people who have lost or can not use one of the organs but I never detected a feeling of self pity or despondence from my friend. Always cheerful and calm as if he had no trouble in the world.

I have made this observation that those who have suffered
great misfortune in their life generally know best how to live in the moment.
It's funny how we take some very important things in life for granted and worrying over silly small trivialities. I hope
the Miles will emerge stronger after this tragedy and find strength in his life.
Interesting approach, but:

> The sample audio I chose is one of the best case signals for this kind of compression, a single gradually decaying piano note.

Anyone know if this approach has any use in real-world scenarios?
I thought of something like this when I read this entry:
https://news.ycombinator.com/item?id=7732463