skysight-inc/HackerNews huggingface dataset:
Maybe not, but it can withstand multiple connections daily for 2+ years without failing, unlike the MicroUSB connectors I've had on my phones. Also, the connector is very sturdy, so it doesn't break off, even on cheaper cables. Additionally, I never plug it in upside-down, because there is no such thing.

This is a good move for USB, and I personally can't wait until these become the new standard :)
Probably the fact that some people were shooting firearms at the police helicopters during the riot.
A year of tech industry hype in a single graph
The FAA puts up TFRs (temporary flight restrictions) all the time. Reasons can range from sports events, presidential visits, military exercises, etc. In this case, it could be that there were just too many news helicopters persisting in the area, creating an unsafe environment for each other or for law enforcement aircraft.

What's unusual about this one is that it's right off the runway for a Bravo class airport, and the language of the NOTAM does not provide a clause for regularly scheduled passenger aircraft or other aircraft with pre-filed flight plans under active ATC.
Ask HN: Some real world, open source Rails project
Hi,

I know of https://coderwall.com/ open source their app recently. Also http://yumhacker.com/ and https://github.com/afternoonrobot/photographer-io

Those are big Rails project (to me), real world application that I can learn from. It's better than watching sometime outdated screencast, book, tutorial.

Do you know any of other on Github?

Thanks.
Judging simply by the fact that another 10 no-flys have been issued today alone (per that website), I doubt this is really news.

Digging deeper, if you read the details provided, this was done to ensure law enforcement had access to that airspace, presumably so they can fly police helicopters in it. Given that reason, I would assume this is standard operating procedure during any ongoing law enforcement effort.

"Sounds like news but isn't" is a category we could use a lot less of on HN. Please do not post stuff like this. It sounds dramatic, it gets attention, but it ultimately means very little. It certainly doesn't affect anyone here personally (because it likely doesn't affect anyone at all... how many people are actually flying in this space anyway?). And it also provokes no intellectual discussion of any kind. What is there really to say about this aside from "yep, it's happening"?
Experience dictates that about 95% of manufacturers will be too cheap to implement that bus power on their devices, because it'd cost them 50 cents more. So it won't matter much.
Uber Claims Lyft Employees Canceled Nearly 13K Rides
Finally: Automatic Sliding Doors Get Star Trek Intelligence
That sounds sorta like an integration test; a unit test wouldn't talk to DNS.
I love how the Internet of Things is just about ready to plunge into the "Trough of Disillusionment"
I think this blog pretty much sums up my feelings on the subject.
http://blog.jpl-consulting.com/2012/04/why-i-wont-sign-your-...
Nice! I'll have to read that in full later tonight - thanks for sharing!

This was mostly just me trying to wrap my head around Church encodings and such, but I could surely do with a couple more combinators in there :).
Some of this stuff is pretty abstruse. Can someone rephrase the winners' research programs in the form of Harry Potter fanfic?
Well viewport units are completely flexible/dynamic [1]. That's their purpose. But I can see how this library might be a quicker solution in many cases.

[1] http://dev.w3.org/csswg/css-values/#viewport-relative-length...
As an IT guy, I see hundreds of these connectors on a regular basis, so I've noticed something...if it's falling out too easily, odds are that the port has picked up a small piece of debris somehow, and the magnet isn't getting good contact. Take a close look at the plug and the port and brush them out a bit, and see if that helps.
Its enough to support any laptop I know of. Very vew exceed 100W.
Im building a service that helps keep track of public art and their artists. This was a piece I followed, because Im based in NYC.

Flag incident page: http://www.publicartfound.com/graffitis/bb-white-flag

Updated artists page: http://www.publicartfound.com/artists/mischa-leinkauf-matthi...
Don't police and other low-flying aircraft (e.g. news helicopters) tend to coexist without issue, for example during televised car chases?
I do not understand why should HN be afraid to give reasonable reason for down voting. Looking at picture I also thought that Maryam Mirzakhani is man. I understood my mistake only by reading down-voted comments. Someone is spoiling valuable comments and it happens too often. Sad.
That's a pretty meaningless distinction if it has no other consequences – it's essentially demoting this to the level of seriousness of wearing non-matching socks and the only people who benefit from this are the abusers.
I'm not a lawyer, but I think this would depend on the eventual outcome of FAA v. Pirker.

The judge in that case found the following:

Neither the Part 1, Section. 1.1, or the 49 U.S.C. Section 40102(a)(6) definitions of "aircraft" are applicable to, or include a model aircraft within their respective definition.

Which means that NOTAMs would not apply to drone operators.

However, the FAA appealed and because of the procedure for transport courts, the appeal immediately stays that decision.
So with this new tech, it looks like you could charge the smartphone from the monitor while sending video from phone -> monitor? Sounds awesome.
Automated Moment Capture and Sharing
Yes and no, ours are pretty cheap, and they come with 24x7 4 hour response, which means that we don't have to worry about keeping lots of spares.
In my view, the only problem with slavery is that it's involuntary. It's important to make a distinction between voluntary servitude and involuntary servitude (real slavery). To prevent someone from voluntary servitude would require their involuntary servitude to whomever is preventing them.

To put it another way: If person A is forcefully preventing me from voluntarily serving person B, that makes me person A's involuntary slave.
Absolutely fascinating. Stoked to see where this'll go!
Genuinely funny and on-topic humor is appreciated (see edw519's comment history for examples.) If the comment had been a subtle pun based on something from stochastic PDEs, it probably would have been upvoted.

We're not particularly interested in average jokes.
"Dude, I have this awesome idea....."

No.

"We don't have any product yet...."

No

"....we need to build an MVP first...."

No

For me to sign an NDA, you need to have a heck of a lot more than an idea. If you have a bare minimum prototype, some market validation and potential customers lined up, may be then i might even consider it if I really believe in your product/business and want to be a part of it in the long run. Anything else, the answer is No.
I love the idea of software archaeology in the context of video game software. Usually video game platforms (the earlier the better) cause developers do resort to wacky/unique tricks to make the most of their limited resources. And I feel like that ends up giving video games most of their unique flavor.
> Degrees are credentials that are used to sort people.

Degrees are used to sort people, but not arbitrarily. A degree certifies what you have learned. Giving out more degrees could mean degree inflation or it could just mean that more people are learning.

Our economy is shifting away from unskilled labor towards skilled labor. You can get those skills without getting a degree, it's just harder (and cheaper) to do. I love institutions like the Khan Academy that make it easier to improve your skills outside of a degree program, but I also love initiatives that make degree programs more accessible.
They put this ban up, due to people taking potshots with sidearms at helicopters last night, during the protests.

As a St. Louisan, the social dynamics are much too nuanced to even try to explain, so I'll just say, it has not been good the last couple of days.

https://twitter.com/MatthewKeysLive/status/49926643621314150...

This is a local alderman filming:

https://vine.co/v/MYZmwD9Dqhu
I am having much less of a problem finding unsweetened (ie., fruit only) yogurt in many other countries, although I will agree that the problem is not unique to the US.

For a direct US-to-Europe comparison, when I'm in Germany, my favourite non-plain yogurt to buy is Müller's "Joghurt mit der Ecke" with granola [1]. It's 118 kcal and contains 11.3g carbs. It exists in the US [2], but with a different formulation: The US version is 210 kcal with a carbohydrate content of 32g, of which 22g is sugar. It tastes disgustingly sweet, for me it's inedible.

In the US, yogurt is almost exclusively sweetened, with a sugar content of typically about 10-20%; most of the sugar doesn't come from the fruit, but from pure sugar and fruit juice. The yogurts are almost entirely "no fat", which from a flavour perspective is awful; fat has been replaced with sugar, making it less healthy. In my local supermarkets in NYC, the only whole-milk yogurts available are plain yogurts from brands like Stonyfield.

[1] http://www.muellermilch.de/fileadmin/documents/infos/info_na...

[2] http://www.mullerquaker.com/products/corner/crunchy-granola-...
This and Saildrone promise a very exciting future for ocean exploration and data gathering.

http://www.wired.com/2014/02/saildrone/
If this is the same team who did the "cat brain" at 2009, then I am on Yann's side.
That is awesome! I've been doing something similar for my computer trainer and it is a ton of work.
I think it depends on the "scummy, sabotage, and price-war tactics" bit. If a well-funded Uber can out-spend and temporarily out-price Lyft into bankruptcy/acquisition, they might gain some leverage. That said, plenty of equilibria exist in other networked service-based markets. A good example would be UPS and FedEx, which provide remarkably similar service profiles to remarkably similar service areas.

The matchmaking part of the equation is low-cost on a per-transaction basis, and most of the risk and operational cost lies with the independent contractors (the drivers with their cars). This makes the services straightforward to run and scale, meaning there is no inherent reason why one or the other would be "shut out" of a market.

We may see this shake out one of multiple ways that could include the two operating at different levels of the market (Uber on limousines, Lyft on ride-share/cabs). There may also be additional tools/services from one of the companies that upsets the balance in a more sustainable way (e.g. facilitation of ride-shares, carpools, or other less ad-hoc trips like daily commutes). Lots of room for growth and expansion in this space.
Which may become relevant if Uber pool or Lyft line work out and this actually becomes a network effect business. But for the now, it is not.
>If nearly everyone had a college degree, its effect on their occupational opportunities would be very similar to that of a high school diploma now. Unless the focus is on the education itself, instead of schooling, the result is just credential inflation—something very expensive and wasteful economically and in terms of peoples lives

This.

I think the focus must go more to the substantial knowledge gained, than the "credential system"..

Universities were created so that the son of the nobleman, could have a blue blood certificate, in the world of the (new top dog) bourgeoise back then.. than good manners and education could distinguish them from the poor ones..

So they can rule the world with their pedigree certificate.

This sort of elitism baggage we still have in the educational system must go for good.. and we really need to focus on knowledge itself.. because in this new digital era we are living now.. knowledge is more valuable than ever before
Is it only for one exchange (e.g. message sent and reply)? Also, the background was a bit distracting - but it's an interesting concept.
Another interesting alternative to a traditional motor is the "Slocum Glider", which dives and propels itself through the water by pumping oil between its body and an external bladder.

http://www.whoi.edu/main/slocum-glider

http://en.wikipedia.org/wiki/Underwater_glider
If I think the person I'm talking to has unique knowledge of some obscure market or of cutting edge tech (the kind that comes from universities and labs), then "yes" as long as the NDA is standard and isn't screwing me out of something surreptitiously.

Otherwise, I'd think twice about it, not really because of the trouble, risk (there shouldn't be any) or the hassle, but because I'd question this person's entrepreneurial maturity or, um, view of reality? Everybody has an idea... execution is everything.

In my early entrepreneurship, I tried to get people to sign some NDA-like stuff and I'm red-faced about it to this day. It was unnecessary and made me look like an amateur.
People keep saying this, but does anyone actually have numbers to back up the claim that things are going to get really bad?

The reason I ask is due to an NPR segment that aired last week about a Texas power company. They described the different types of energy they were using as well as how long it takes to "turn them on". There were order of magnitude differences between the various power sources. The more efficient the power, the longer it took to start/act to changes in demand.

If more people are using local solar, then peak hours during a summer day would help level out usage: more sun = more local energy that will be used for AC. I would imagine that change would allow these companies to save a lot of money by not having to use the less efficient power sources to properly adjust available power. That extra money can then be spend on the infrastructure or more R&D.

I'm just curious because I keep hearing crap like "solar is going to completely kill the grid and costs will skyrocket as people leave."
I've signed dozens over the years. I wouldn't hold it against the asker. The vast majority of the time though, it's a really bad sign:

The prototypical example is a potential-founder who has an idea that they think is too good to let leak; so they force everyone to sign an NDA. The problem with this mindset is that most ideas are total crap; and you only find that out when you bounce the idea off of people who are willing to be honest with you. Also, ideas get stronger when they're discussed with others.

So usually the founder says "Please sign my NDA before I disclose to you" and then I sign it, and they reveal their idea, which is either:

A. An exact clone of something that already exists, which they didn't realize because they haven't had this discussion with anybody yet.

B. A ridiculous spin on an existing product (think "Twitter for Dolphins")

C. Something either illegal or technically impossible

In rare cases, it's something great and amazing. So every-time I sign I just hope for that. 95% of the time I am disappointed.
But of course you're not just worrying about fuel/battery energy density difference. You should look at energy deliverable to the road per pound of fuel + engine + exhaust system versus electric motors + batteries, which I would guess is nowhere near a factor of 50-100.
Microsoft and Apple have been in bed with each other WAY too many times to qualify as the fiercest rivalry.
Clickable:

[1] https://news.ycombinator.com/item?id=6412190

[2] http://shop.oreilly.com/product/0636920032823.do

[3] http://www.oreilly.com/pub/e/3115
> Well, you've got one out of two already. :) Apple laptops can be powered by Apple external monitors.

Well. Kinda. You still have to plug in two cables. This would allow to go down to one single cable powering the laptop and sending signals to the screen.

Though, honestly, I don't trust USB to be a good protocol for transmitting a high bandwidth and very lie latency signal with it's inherently polling architecture.
Wolfram's essay addresses this point...
Just a warning: at least for me, once I got started, it became addictive to try, Oulipo-like (http://en.wikipedia.org/wiki/Oulipo), to write simple programmes in these ever-more-restrictive languages. I was helped along immensely by Hindley–Seldin (http://www.cambridge.org/us/academic/subjects/computer-scien...) and, for, as one would expect, a more friendly but still thoroughly mathematical introduction, Smullyan (http://en.wikipedia.org/wiki/To_Mock_a_Mockingbird). I am not alone in my admiration for the latter; see, for example, http://www.angelfire.com/tx4/cus/combinator/birds.html.

EDIT to add: Speaking of 'Mockingbird' articles, you may be interested in Appendix A of http://dkeenan.com/Lambda/index.htm, whose author discusses another interpretation, attributed there to Barendregt, of Booleans and numerals. For someone who regards the Church encoding as 'intuitive', they were very surprising!
In-depth profiles and videos about all 4 Fields medalists here: http://www.simonsfoundation.org/quanta/20140812-a-brazilian-...
While this article is about Windows, the situation is very different on Macs, where Safari completely trounces Chrome 36 in terms of battery life, but also rendering performance and UI responsiveness.
Not mentioned is perhaps the machine learning already in my Nexus camera for simulating depth of field blurring effects by using an approximate 3D model.
I have been a follower of justleak.it. Would you run into the same issues as them?
From what I've read the tomb is said to be 10 times bigger than that of Philippos his father. Now if history is correct and Ptolomy took Alexander's body to Egypt, could it not be so that the tomb was in any case originally built and intended for Alexander?
There has been a CPU with transactional memory running big business servers. The Vega boxes from Azuul (~800 cores) running their JVMs. I know of two good internet discussions available talking about their real world experience using them

Gil Tene
https://groups.google.com/forum/#!searchin/mechanical-sympat...

Cliff Click
http://www.azulsystems.com/blog/cliff/2009-02-25-and-now-som...

It can be enlightening to hear from a real application of these technologies. I am sad to see it disabled. Had it in the back of my head to play around with it some time.
I get the feeling that few people know, and they're not telling. Maybe to prevent exploits from being written against the existing CPUs.
Accusations Fly Between Uber and Lyft
What Happen to Unicast or Multicast on the NLB Network?
Yes. right now its for one pair of exchange. but will soon be extended to instant messaging. Thank for commenting.
The NSA is dancing around the real issues. There really are not three possible outcomes.

If encryption works, the choices are stark: A. Strong encryption is made illegal, and we are living stripped naked in the panopticon, or B. we have pretty much absolute privacy in communications, and that means that the prerogative governments assume they have, to snoop as they choose, is over.

I would rather have B. The government has demonstrated they can't contain snooping.
Bolt vs. Bolt: Photo messenger that isn't by Instagram makes debut
If you really want to reset your brain I highly recommend doing a 10-day vipassana meditation retreat (see: dhamma.org). They are free and not affiliated with any religion, but you can't read or write or talk for 10 days. They teach you to meditate during this time.

I did this with my wife last year. I'm CTO and co-founder of a startup, so I had to plan many months in advance, knowing that no one would be able to get in touch with me during this time.

It was really difficult, but a great opportunity to grow and learn to meditate. I didn't realize how much of my own opinion and views of myself have to do with communicating with others. When communicating with others, their responses to you add to your definition of yourself. And when you don't have that for 10 days, your self starts to disappear. It was pretty awesome and interesting. I think everyone should try it.
No. we have our own mail server setup. we are not dependent on any third party services. so will never run into same issues. thanks for commenting.
I understand where you're coming from, and that's fine.

As for context, I disagree--I think this is a perfectly fine time for it--OP was saying, in effect, "Folks, we're about to do Demo Day, don't be scumbags and/or harass our founders; there's a price to that."

My comment was in response to a (completely valid and correct!) complaint about the tainting of business relationships for investing with romantic/sexual nonsense. I asked a question that several people interpreted as crass, which is unfortunate. I later refined and elaborated on the topic, showing it could be taken quite seriously and evaluated beyond just being thought of as some lowbrow joke.

The troubling thing to me about this all is the out-of-hand rejection of the idea without further argument than "This idea makes us really uncomfortable, and we summarily refuse to evaluate it".

It's a sign of intellectual laziness, of prejudice, and perhaps most unfortunately, mob mentality on a forum I generally respect.

If we want to fix a lot of these issues we have as an industry, we can't shy away from ideas we find odious or comfortable: we must engage them on their own ground and show them to be folly.

It's a pity that more people don't see that.
Haha, "But Khot’s Unique Games Conjecture has already amply proven its value, even should it ultimately be disproven. It has cast a bright light on previously dim areas of computational complexity and provided critical insight — and, yes, Khot has also used it to prove major results, ones that stand regardless of its truth."

weak people conjecture and then get results "if my conjecture stands". This guy is a black belt, he makes a conjecture, gets a field medal for it, and then removes it from his proof ("just joking, it works wether it's true or not").

Still gets the medal for the now useless conjecture and not for the ultimate proof.
It wouldn't be much different than in any other language, that can let you define a mutable hashable type that breaks the hashability/equality contracts needed by maps. Mutating things that you'd use as keys is a well known no-no, and value equality is the expected behavior among all the developers I know. So implementing this is certainly not any less sane than other tricky behaviours already present in javascript (think equality coercions) and it would give a behavior which makes real code simpler.

On top of that, the Map implementation could always call Object.freeze() on the keys that it receives
Jon Harrop's criticism of OCaml
Something like http://timebanks.org/?
I was thinking of trying to set up DNSSEC for my domains. Are you saying that it isn't worth the hassle? What benefits / drawbacks does it bring?
Because having enough drivers with their own cars available to pick up rides is totally not a network effect business. See I can make snarky sarcastic comments too.
You should see one of my all-time favorite Hacker news threads:

https://news.ycombinator.com/item?id=35079
Thinking of Robin Williams' Suicide by Darin L. Hammond