skysight-inc/HackerNews huggingface dataset:
I think you're talking about relativistic mass, which is irrelevant here. When it comes to rocket propulsion, reaction mass is everything. See the Rocket Equation[0]

By the law of Momentum, you cannot change the velocity of an object without pushing against, and changing the velocity, of another object. Vehicles on Earth mostly push against the planet, and the water and air on it. In space, there is nothing, so you must bring your own mass to push against if you want to change your velocity. But this sets up a rather inconvenient exponential situation, because the mass you expel to accelerate now must accelerate not only your vehicle, but also all of the rest of the mass that you're going to expel later to accelerate further.

It's why chemical rockets traveling to Earth orbit have about 20x more propellant mass than the mass that's going to actually reach orbit. The situation gets exponentially worse the higher you want to take the final craft velocity, which is why all interplanetary missions have gotten around mainly on gravitational slingshots. Increasing the rocket exhaust velocity helps, but only in a linear fashion. When it comes to reaching reasonable interstellar velocities, all the numbers I've seen say that it's wildly impractical even with fusion or anti-matter level exhaust velocities. Like mass ratios in the neighborhood of 4,000,000, as I calculated above, which is still nowhere near fast enough.

[0] http://www.wikiwand.com/en/Tsiolkovsky_rocket_equation
Hard Truths: Law Enforcement and Race
Slightly off topic but everyone here seems somewhat interested in open source self hosted solutions, so check out http://selfhosted.reddit.com
The punishments do seem extreme, but the why downvotes? Not everyone in jail is a drug addict who was affected by bad circumstances. Really bad people get locked up too.

I only have this one link on hand, but surely it isn't an isolated incident. Communication is monitored for a reason.

http://www.washingtonpost.com/wp-dyn/content/article/2005/05...
Lisp in Python in 137 LOC:

http://www.flownet.com/ron/l.py
I want it the other way - let's clone all those shiny features and make a pretty, nongeek-friendly client. IRC protocol can be extended to handle all that stuff.
All the cities in the bottom most graph already looked like their crime rates were dropping.
[tl;dr: I suspect the Go GC isn't very good]

I'm interested and surprised to see people putting much effort into escape analysis for stack allocation. The research that came out in the 90s and 00s pretty much said that if you have a good GC you won't see much benefit to using EA for stack allocation.

[Disclaimer: All of the below written with the expectation of being wrong because my knowledge is out of date, my memory is bad, and/or there are specifics to Go or the implementation which invalidates my points. Still wrote it cause it might be interesting to others or lead to interesting conversation]

OK, why do I say that. Well:

- It's very expensive to do EA well (O(n^3) or O(n^6) where n is the depth of the call graph). You can do it cheaper in a JIT that has on-stack-replacement (basically where you make optimistic assumptions and reoptimize if your assumptions are invalidated)

- You do get good payoff from stack allocation, in terms of time spent allocating and deallocating memory.

- The real payoff from EA is to allow synchronization removal in Java (which shouldnt matter for Go).

- Stack allocation provides cheap allocation (don't need a malloc, you can just do an alloca, which is a cheap add operation), but a good copying GC provides bump allocation which is better.

- Stack allocation provides cheap deallocation, but not as cheap as a generational GC which can clear the young generation for very very cheap.

- Stack allocation also extends object lifetimes, which is bad.

- Stack allocation also allows you to move object fields into variables which can get values out of memory and into registers, which is good.

- Stack allocation also has worse locality than a good GC (a copying collector has amazing locality, putting things on the stack doesn't necessarily).

So all this, plus the details in the doc, imply that the Go GC isn't very good. If it were good, it would have better allocation performance than you would get from stack allocation, and the only thing left would be that the benefit from moving values into fields outweighs the costs.

I don't know anything about Go, so this may not be possible, but as a total bystander with no info at all, I'd say don't work on optimizing EA and instead focus on improving the GC.

[disclaimer: please reread disclaimer above]
I can't help but wonder how many people are going to apply this handy trick to people's unlocked Windows sessions...
Recently there was a very intersting interview with Arthur Laffer.

Watchable online: http://www.aljazeera.com/programmes/headtohead/2014/11/shoul...
Yeah there's no way that's enough money to submit to creating a FB account. [only half-joking... EDIT: three-quarters?]
Most people have to work to survive. That's the "slavery" part of it, and it is currently inherent to employment. Let me choose whether to work or not while retaining the same quality of life as anyone else and I won't think of it that way.
Thanks for the feedback. Email-based login is definitely high on the list.
If you've ever wondered why people on hard drugs like to take off their clothes when they're coming down, this is it. You can't handle the sensory overload of your t-shirt against your skin.
My mistake, I should have been more clear. The current "political correctness" paradigm along with all of its associated hate mobs is a ferocious status competition as a result of the unmet sexual and pair-bonding needs of singles.

Single males and females are different, in that females hold out for the absolute highest status man for as long as possible, whereas males try to poach any female who meets their minimum fertility requirements. Both end up frustrated as dimorphic sexes have different sexual optimization strategies which are impossible to satisfy simultaneously.

What's important to note is the psychological state of singleness, and its resulting anxiety, is far more damaging than the actual lack of intercourse. In the past, religious and social institutions attempted to prevent this by encouraging early marriage and enforcing it with strict penalties. In the past few decades, all of this has changed rapidly along with the development of effective contraception.

This confluence of factors has thus lead to fiercer competition for each sex as they double down on their strategies, both of which involve status as the main currency. Males attempt to hoard status, and females attempt to attract it. As such, we see far more ruthless status posturing and attacking, of which this article lists many examples.

I did not believe my comments to be controversial, as any cursory glance of the relevant scientific literature will reveal the mundane facts I've stated. However, it appears my statements trigger an immune response in a group of HN readers, for reasons that I can only guess involve discomfort with the somewhat disturbing reality of man's evolutionary origins and predispositions.

I commend you for asking a question rather than reflexively recoiling in disgust. I do believe we will have to confront our natures eventually. Running from the mirror rarely works long term.
A lot of UK homes have storage heaters that are powered at a cheaper rate at night on an off-peak circuit.
Facebook vulnerability allows deleting any photo
I agree with you, and I think the author does too. He was stating the supposed reasons for incarceration (he states 'supposed' explicitly). Given the definition of supposed is: "generally assumed or believed to be the case, but not necessarily so.", I think those were fair statements. Especially since the focus of the article is how incarceration is not effective at achieving its goals.
I have a series of basic questions I include in any data science interview, and one is "please describe what the central limit theorem says in simple, high-level terms". It's absolutely amazing how many people who have great credentials can't do this. I get a lot of "any distribution becomes normal when you sample it enough". This is nonsensical and shows a lack of understanding of the theorem.

Please, if you claim to know stats, understand what the central limit theorem says. It's a pretty incredible and useful theorem.
This matter you are concerned with has always had more to do with recognition and acceptance in society than rights and equality.

You seem sharp set to demonize Eich and otherwise be combative with others in all these comments. Have you ever considered that your attitude would harden peoples' hearts against you rather than warming them?

Do you think you will you ever be able to drop this victim act and heal and move on with life?
It looks like they also wiped out their developer forum which was home to a wide range of questions and answers for specific API uses. It's too bad this is gone, it had some great content.

http://developer.linkedin.com/forum/
If the government making laws is "the very incarnation of threats and intimidation" then you have never really been subjected to threats and intimidation.

I hate to burst your bubble but not everyone is from the states, so it is difficult for me to comment knowledgeably on your reply. From what I can see George Wallace was a politician, if you don't like what a politician says you vote against them. I would not condone shooting him or terrorising his family to force a change when there is a legitimate route to address the problem.

Why would my conscience bother me?
> A friend of mine is dyslexic, and one of the symptoms is that she has a real hard time remembering arbitrary sequences of numbers, like PINs tend to be.

Are the PINs assigned by the card issuer and unchangeable, or can the user change the PIN?

If the user can change them, couldn't she change the PIN to something that isn't arbitrary to her?
Huge iPad games coming in the future.
You're right, obviously, about having everything needed to clone a magstripe on the magstripe itself.

> Any sane issuer will decline transactions made with the magstripe at a chip-capable terminal, so this doesn't help much.

Regarding this... Where I live and use Chip-and-PIN cards every day (Canada), it's extremely common for a chip-capable terminal to fail on a chip card for a variety of reasons and immediately instruct the cardholder and/or merchant to "please swipe card". Customer swipes and places a signature-resembling mark on paper. Merchant and issuer accept this. And so it goes.

Anecdotal data: We've had Chip-and-PIN for years here. Currently, despite my Amex being Chip-and-PIN, more than 50% of terminals fail with the chip ("it's an Amex thing," we're told, years into this) and revert to swiping, and my Visa Chip-and-Pin still fails as a chip card and falls back to a swipe transaction approximately 10% of the time.

So the easy fraud vector is still there with magstripes even in a mature Chip-and-PIN environment.
My Experience with the “No Poo” Method
At SIGGRAPH a few years ago in New Orleans, I saw this concept demonstrated by a Japanese group: http://phys.org/news168797748.html
If they aren't monetizing them, can you be more specific about what these hypothetical exploit buyers are doing with the pwned accounts?
I really like the realtime feedback idea, similarly you could always show how many additional dots are needed (e.g. the starting counts are correct and count down as you add visible blue dots in it's line of sight), 0 is blank, negatives could be hilighted as issues. Then you don't have to count existing circles, and errors are clear in real time.
I understand your sentiment here, but that's a difficult comparison. Friends of mine make more money hunting bug bounties each year than their (competitive) full time salaries as consultants or developers.

These sorts of things are publicly verifiable - Michal Zalewski has commented on it before as a member of the Google appsec team, and if you look on Twitter for writeups from the same folks you come to the same conclusion. I have in mind one particular friend who literally bankrupted a bug bounty in three hours.

Another security researcher by the name of Nicholas Gregoire earned $35,000 combined from Yahoo and Facebook for a single vulnerability in each company - both server-side request forgery. He found it in Yahoo's YQL console, then decided to look elsewhere for it in a very deterministic fashion, and came across it in Parse (Facebook). He found many more bugs in a period of a few months, but he explicitly didn't look as seriously as some people do, which entails actively tracking acquisitions by companies like Google and Facebook.

It can be something of a meat grinder, but finding bug bounties is extremely profitable work. Then of course, having this work on a rèsumè is an immediate step up for getting interviews.
190 on size 8 and back to work :D
I don't know for sure, but debit cards already follow the chip&pin model, except it's magstripe&pin. So I would imagine it would read the chip, and you would enter your ATM pin.
I read of a case here in Germany where workers refused to work with a known pedophile, and the company really struggled to get rid of him. It went through several trials where they weren't allowed to fire him.
You can choose happens with you FB account when you die
The US government actually buys vulnerabilities. It's not really illegal so you don't need to worry about an FBI sting.
A Hackathon on a Train
Oh cool - another version of Logic Dots: https://itunes.apple.com/us/app/logic-dots/id908720413?mt=8
All my respect for Ron Paul, but with this interview, Rand leaves me the impression he has no clue about currencies or economy. And that "I have a biology degree" remark only makes it worse. It's like "Vote me, I know a lot about cells and organisms".
The Psychology of Mars One Hopefuls
(Not the PP, but...)

That's a great way of putting it. Maximum entropy means minimal intrinsic information (and thus you need a lot of external information) and vice versa.

I've never thought of it that way, thanks!
No problem, I see I was not clear. Yes, I am specifically curious about the edge case when you "can't" just disconnect the TCP. Scare quoted because I'm sure you can, it just involves something undesirable happening. I have vague ideas and guesses, but I'm curious about what the intent was.
you're wrong, this happened in France too, and it happened a lot last year :
http://rue89.nouvelobs.com/2014/01/02/quenelle-nabil-perd-em...

just one example...
This is an excellent explanation - http://blog.confluent.io/2015/01/29/making-sense-of-stream-p...
Umbreo: Easily build world-class IT infrastructures
I've been tripped by my professors on it a few times.
The PINs are typically changeable.
It's happened already: http://www.spiked-online.com/newsite/article/online-trolls-w...

(posting from a throwaway because I resolved to stop commenting here, but couldn't help myself here)
There is a guy by name Udi Dahan. He is a self proclaimed CQRS guru. He also sells his trainings for at least few grands. I have listened to his podcasts and read his blogs but I never got any clue what is CQRS and under what scenarios it is best to go with this pattern. Here, I just read the first page and I got it what it is and when I can use it.
I think what the parent means is that a motivated experiment designer can (even accidentally) create an experiment that has a high false-positive rate, thus providing very little Bayesian evidence given a positive result. Ideally, you'd have the experiment designed by someone who actually wanted to falsify the hypothesis (or at least a neutral party), such that the non-null conclusion, if arrived at, would be really strong Bayesian evidence.
I want an electric shower that mines bitcoins. Also, I suspect there's a market for them with stock traders if I include enough chrome and blue LEDs.
Yeah I forgot to mention that. It doesn't look like the blog post or mailchimp for that matter provided confidence interval - which helps you indicated "oh yeah, 600% increase in conversion however this just random - not a real signal." Odd the writer didn't talk about that much- but For larger companies arguing which way to look at data is infinite. And the point of data and business isn't to argue who is right but to be giving options on which direction to go and just pick one.
For the curious, here [1] is a non-authoritative list of some of the companies in the US that are 200+ years old.

1. http://en.wikipedia.org/wiki/List_of_oldest_companies_in_the...
I think I'm more likely to walk to the store a mile or so away, though, whereas I'd drive if I had rented a car. Same thing for using the metro -- I've done it several times, whereas I think I'd have driven if I'd rented a car. So I think it's an improvement, even environmentally.
I'm the same way - for me, "Bladerunner", "Barbarella" and "Flash Gordon" are on auto-repeat as my background noise for serious coding sessions. For some reason these 3 movies just work so well in that sense ..

/off-topic
Are they into storage business?
IMHO Chip and Pin is a huge fucking joke.

There have been multiple posts showing how to get around it or otherwise compromise these cards. That coupled with banks trying to move all liability to the user makes me sick. All of this coming at a time that I swipe my card (physically) way less than ever before. Chip and Pin seems to mean nothing for online purchases AFAICT, feels a lot like failing to solve a problem that is slowly going away and ignoring online purchases.....
This was from a few weeks ago, was on HN already, and it has now expired. It was in response to Uber bringing their Uber Pool (ride-sharing) down to $5 "anywhere" in SF. Lyft has since ended this offer, but made any ride in the same area < $5, simply undercutting Uber Pool.

"Seven days ago, we matched MUNI by lowering Lyft Line prices to $2.25 for a limited time. And your response was amazing. So, instead of letting the Drive Happy District disappear, we’re keeping low prices around longer!

Starting tonight, we’re setting a $5 price cap on all Lyft Line rides in the Drive Happy District, so you never pay more than $5. No coupon necessary, so go forth and spread the news to all of your friends! Just request a ride to and from anywhere in the District, and you’re golden."

http://blog.lyft.com/posts/lyftline5
This sounds like a lot of fun! If it was in the U.S. I would sign up.
4GB isn't even particularly huge for games these days. Basically any PC game with lots of voice acting and high-resolution textures will blow past that pretty quickly.
Geez, to have that authority. Crazy.
To me.. the core idea is that (given one chooses, over and over, from a bunch of independent and identically distributed events.):

There are more ways for everything to happen than there are ways for one thing to happen over and over.
I'm not aware of any countries that are majority-atheist (maybe Norway?) Any references for that?
What vertical will this benefit most, aside from gaming?
Chrome now supports Smart Zoom
> More viewers is more better. Captions are a really easy way to achieve that.

In a world where perfectly accurate captions are zero-cost and zero-effort, absolutely. That is not this world.
This actually reminds me more of Simon Tatham's Range[1].

[1] http://www.chiark.greenend.org.uk/~sgtatham/puzzles/js/range...
Incidentally, I don't think you should have to apologize for what you said 20 years ago, because it was 20 years ago and that's ridiculous. But I do think you were an ass for escalating the Noordhuis incident the way you did, not because of your opinion on pronouns. And I voted you up because downvoting because of petty disagreement _is_ getting ridiculous around here.
Out of curiosity, mind sharing some of those questions? I'm a computer science major looking into getting a data science internship, and I'd love for a chance to see some real interview questions.
Has anyone attempted at adapting bitcore.js for scrypt coins yet?
The classic, easy, example is China.

EDIT: Apparently that's a little contentious -- only 47% self-declared atheist (http://redcresearch.ie/wp-content/uploads/2012/08/RED-C-pres...), but given that 9% of those surveyed did not respond to the question, the majority of respondents to this specific survey question did self-proclaim themselves as atheists.
> you would have to add schema attributes for every event property AND the logical aggregate properties.

In that case, you can serialize the hash-map with the fressian serializer (the one Datamic uses internally) and store it in an attribute of type :db.type/bytes. If the data is large (you didn't specify), then the link to an external data store is a good choice. The lack of an arbitrary shaped data type is a missing feature of Datomic, but is easy enough to work around.

I'm not sure Datomic is a mismatch. But, I don't know all the details of your situation. My main issue is with the lack of an explanation as to why you needed all those extra parts in the project page. The technical issues you solved, with those extra pieces, didn't come through in the project page.
A precedent that big institutions aren't allowed to shut out disabled people? Sounds like a pretty reasonable precedent to me.
Sample libraries, maybe.
It bothers me that the main reason these people are choosing to go is to be remembered. I watched a similar documentary on them a while ago and there was a general consensus that they lead purposeless lives here and they want a statue made of them.
I have to say, I find it rather strange that this is worthy of mention. I'm sure all European countries have business entities that sort of age. I'm fact, I've had two clients in the last year that are over 900 years old.
Thanks jamii, that's an excellent read - I forgot to add it to the Further Reading section! Will do that now :)
Wow, that was exactly what happened to me... Everything is so sharp and square here.
I work for them.
Yeah, I didn't read through the details

The way this works in GSM SIM cards is the following: If an operation needs authentication you have to provide your PIN to the chip.

This operation returns OK or not. There's no counter to be checked (IIRC) and it can't be reset.

If you got the PIN right then operations will succeed (like listing SMSs, Phone book, or making a call) otherwise they'll return a "needs auth" error code

GSM 11.11
Neat. Now when will they dump this antiquated 16GB lowest tier for their devices? About 20% of that is lost to the OS, and an addition 5-15% when you download an OS update [0].

While there are Android devices who still come with 16GB, most flagships have moved to 32 GB baseline and may or may not come with a micro SD card slot on top of that.

Apple's devices with 16GB are actually legitimately painful to use after about a year or more. They really are ruining the customer experience, and I bet if Jobs were alive they would have moved to 32GB long ago.

It isn't like Apple needs the money.

[0] http://www.theverge.com/2014/12/31/7474947/apple-sued-over-1...
sorry if this is trivial, but how easy is it to get the Mobile API access token? I thought api access tokens should be safeguarded like credentials
For the purposes of armchair moralizing, who cares about the law as written? Pretend we're making the law, instead of deferring to the law as written. Should we in fact tell them "it is illegal for you to put out this material to benefit much of humanity, without also expending additional effort to benefit the deaf part of humanity?"
Have You Ever Wondered How Jet Engines Work?
Just seem this, good work on getting involved.
Can someone explain why there is still the 100 MB cellular limit?
How We Used Laughter to Topple a Dictator
There is still a max executable size of 80MB although right?
Thanks, I am looking at Azure SQL right now.