skysight-inc/HackerNews huggingface dataset:
Not necessarily. They say it works 70% of the time.

I'm a Bayesian, and looking at the posts here, I'd say the probability distribution of this probability is beta(5,2). The HDR runs from around 40 to 97 percent and it peaks around 0.8 so what you and the other guys are saying, plus a non-informative prior, agrees with what they say.

You're just one of the unlucky beta(2,5). Too bad.
Fast response!

Last question: How will this work if me and my friends want to sell our game? You might be asking why professionals are using a tool like craftstudio to push out a game.

My friends aren't programmers. I'd rather them trying to figure out craftstudio than teach them opengl/webgl/direct3d.

Lol.
We are already using GAE for some cron stuff that Parse didn't support, so we will probably just roll our own API with GAE.
I don't think he is complaining as much as saying you can get a greater conversion rate if you give the person more time, but limit based on usage when it is used effectively as a non-trial.

A ferrari is too extreme of an example, because they are trying out a few services, potentially developing some business with that service.

A better car analogy would be to let you drive around any cab of a truck to get the look and feel and how everything works at your own pace, and then when you want to hook up the trailer they start charging.
The reason all the money is in 3 cities is actually really simple...

NY, SF, Boston > Every other city in America

I'll admit that those cities are not for everyone, but they are irreplaceable for most people that live in them. If you make enough money to live in one of those cities, the lifestyle cannot be replicated outside of those cities.

VCs can choose where they want to live, most of them choose tier 1 cities. Talent also chooses tier 1 cities so the collocation benefits everyone.
Good point, I hadn't thought of that. I suppose I should call my bank and ask them. But how do I know what they're saying is true? Usually when you call support (never tried calling a bank) you get some blonde that tells you nothing except that "everything is secure!"...

On the other hand, the card doesn't slide all the way in anymore. Just far enough so that it sticks and it can read the contacts, so at least they can't grab all the information on it.
Carrier subsidised phone ads usually state the minimum cost during the contract period.
This is a good reminder to think creatively about trials. Would be great to know what testing was done to show the 100 leads trial was the best.
We are in agreement, that was my whole point. =))
Machine Learning Library for C++
A usage-based trial is really just the same thing as a time-based trial. There is a certain pace at which users are going to use up their usage quota, and that translates to a time period. Generally, though, you want the time period to end after the user has seen the benefits and before they have exhausted their initial enthusiasm or encountered any bugs. Giving a user four months to make their choice probably puts you on the wrong end of all those considerations.

After the time-based trial, there are going to be different packages based on different usage quotas anyway. KISSmetrics is probably catering to very different and more established customers than the author, and their pricing model is structured accordingly.
Google Play content policies have been updated
It isn't arbitrary to assert the universality of economic laws

But it is arbitrary to assert that it works identically for all commodities and services. Demand for some things (a ride home) is easily sublimed from one solution (unlicensed cab) to another (licensed cab). Demand for other things (heroin, weed, whatever) does not work the same way because the demand is 100% aligned with the illegal item and therefore far more likely to set up a much larger black market.

I think you would have a very hard time proving that the crime levels stayed the same and the crime had just moved. Allowing unlicensed, unregistered cabs that pick (mainly drunk) people up from the side of the road, was putting vulnerable young people at risk. At least some of this demand has been shifted to traceable, regulated businesses.
It is back now. You can apply single filters and check out the results. It's nice to play with.
except me!
I understand where you're coming from but dismissing it as a 'thing' is a bit cynical. I disliked the whole 'web 2.0' look, it was garish and rarely had any relation to things in real life. With more designers embracing the flat aesthetic, I think it shows a deeper development that design is becoming more humanist, and this can only mean users are more aquatinted to digital interfaces and no longer need high gloss buttons to understand an elements can be clicked etc. The move towards flat to me a great thing, a turning point in digital design.
i don't think that so-called 'Disruptor' is something more than a trivial implementation of 'pipeline parallelism'. i'm sure this keyword typed in google scholar would lead you to far more interesting things in real computer science
Unfortunately it's regular practice to say that things are bulletproof and airtight :/
If you suspect a skimmer, be aware that the person operating the skimmer might be close-by and not too pleased to see you take it apart.
Another thing I don't like about 30 day free trials is that they usually start right away. Before I know it, I'm getting an email saying that the trial is almost over, and I've barely used it. It takes time to develop a new habit and explore a product or service. This is worse if it requires some integration, setup, training, or data import.

I wouldn't say the 30d free trial is broken, or even mostly broken, but it's not always the right solution.
> Why don't ATMs in Europe use chip and pin yet?

Many of them do - one security feature is to have the ATM pull the card very, very slowly into the slot whilst oscillating them to prevent skimmers reading the mag strip, as it's no longer required (unlike the US, nearly all ATMs here in the UK feed the card in automatically, rather than manually dipping it). If you're not used to this you might think the machine was on the way out.

Even with ATMs that support EMV (chip and PIN) you still run into the problem that a) ATM design inherently involves pushing the card into something, which could allow the mag stripe to be raed, and b) as long as there are ATMs and places that don't use EMV then there's always going to be a way to get money out / buy product with cloned cards.
"Although the mice continued to sleep normally, after 12 hours they showed a rapid improvement in mood and behavior, which lasted for 48 hours."

Does anyone know how we measure moods in mice? At first glance it seems like a very subjective exercise.
Ask HN: Advice from security expert
I am a one man software development shop and have a product at the prototype stage. I build desktop software using python and would like advice on how to do password management and updates in a secure manner. I would like to have a paid session with a security expert but dont know if I will be able to afford the big gun security companies. Any pointers on how to go about this would be appreciated.
One misconception is that real estate prices have something to do with a robust economy or value-driven demand. Those are, at most, 5% of the picture. 95% of it is regulatory corruption and the legacy cruft it generates. Even good land-reform programs get abused (cf. NYC's 1947 legacy rent control, many of whose beneficiaries today are upper-middle-class transplants who stalked obituaries and paid "key money" to a dead person's out-of-city children to get an arrangement literally better than ownership). That's why Luanda and Moscow are more expensive than New York.

Real estate demand is extremely price-inelastic, which is why a disaster that destroys 5% of supply would actually double (at least) the supposed "value" of the remaining land. Regulatory corruption often has the same supply-destructive effects.

High rent is an undesirable (and, one hopes, temporary) byproduct of urban health, but not a real correlate because its long-term effects are disastrous.
>Humans are looking very hard to replace our go-to energy storage media: solid coal and liquid petroleum, both of fossil origin.

So you're ignoring the stored energy vs. energy storage distinction. Yes, yes, oil and coal are storing energy from the sun from a billion years ago. But the energy there is already stored. You can't replace that by making a better battery, you need somewhere to get the energy to charge your battery. If you have a cost effective source of energy (wind/nuclear/solar/etc.) to replace them, you can at worst produce carbon-neutral oil synthetically, though alternatives may be more efficient. That doesn't mean storage isn't a problem (efficiency is king there), but it's a different problem -- if we solved the supply problem then regardless of storage we could shut down existing coal and oil fired electrical generating stations. If we only solved the storage problem we would still be burning coal to make electricity.
Show HN: stljs, a fast library to read, write, and render STL files
The Atheist Who Strangled Me
The use of X-<Name> prefixed header names is now depreciated RFC 6648. You can read more about that here:
http://tools.ietf.org/html/rfc6648
http://tools.ietf.org/html/draft-ietf-appsawg-xdash-05

Discussion into this is on SO:
http://stackoverflow.com/questions/3561381/custom-http-heade...
I expect the administration to be covering up embarrassing information. That's par for the course.

What I'm constantly amazed at is how the media ignores the issue.

On 9/11/2001, George Bush hesitated a few minutes while events were unfolding and he was in front of a class of school children. The press explored every second of the event and Bush was lambasted for just sitting there. Fair enough.

On 9/11/2012, (from what little we know) Obama got one briefing in the early evening on what was happening, gave no orders to mobilize support for those under attack (which was apparently critical), went to bed and didn't check on status until the next morning.

If George Bush had been that lax in handling something, Michael Moore would have had a movie that featured it as a key failing, ABC, NBC, and CNN would be all over it as a major political failing - with story after story and maybe a couple of specials.

When the press basically becomes a mouthpiece for a particular administration or party, we're all in big trouble. The potential iceberg under the water becomes larger and larger.
You can easily demagnetise it, with even a kitchen magnet [0].

[0] http://lifehacker.com/5780617/how-to-prevent-yourself-from-o...
Is feeder 19$ a month or indefinitely? They don't mention it on their website.
At face value, it seems like this flies in the face of the commonly-held wisdom that regular patterns of sleep (as well as eating and other habits) help minimize depression over time. It seems like the research is actually referring to the short-term effect of sleep deprivation on brain chemistry, which makes sense in an evolutionary sense. Maintaining alertness in the face of sleep probably has a hard-wired association at quite a deep level with self-preservation, and I can see how that would explain in some way these findings.
Acute sleep deprivation can apparently make depression better, but the effect only lasts until you go to sleep. That's what this article is about. Chronic sleep deprivation is very different and can cause depression.

This article is not describing a treatment, just progress in understanding a mental illness.
flat design is a fad and will go away , like all trends. It's not bad , but since it is used everywhere even where it should not be used , it is an abused trend.
More likely to be accurate.

If the original statement had a nugget of truth it would be easiest to just ignore it and not answer. Instead, they are going on the record and saying its not true.
Budweiser Buddy Cup
That's Feeder Pro, Feeder, the Chrome extension, is free.
Designers: Read the [Graffiti] Writing on the Wall
> some observers

It's the company itself which did that, not "observers".
A follow-up interview by the same author with Sam Harris on the techniques of unarmed combat against armed attackers:

http://www.theatlantic.com/national/archive/2013/04/what-mar...
Advertorial it is, Then
Perhaps not, but the context is that this dialogue is a response to Uber's response to the situation in Sweden, which is at best jarringly strident in tone.

Dialogue that doesn't /start/ nuanced rarely becomes so half way through...
Google Search Terms Can Predict the Stock Market
> I've never understood this "don't obsess about performance at the start" rule.

It helps if you've seen, firsthand, a startup wasting time worrying about trying to optimize stuff they don't even know if they're going to need to optimize.

> my iPhone app starts up 5 seconds quicker

That's something you know you need right away, apparently. It's probably a sensible investment.

> Or as great as PostgreSQL is for single server deployment why wouldn't I look at something easier to manage, trivial to scale and a more agile schema like a DynamoDB, MongoHQ, Cassandra.

Because there are some big tradeoffs involved in using those. And because Postgres is not at all hard to manage or scale to a point where you can probably afford to look into other solutions or hire someone to scale it. This article is, after all, written by an Instagram guy, and they seemed to do ok with Postgres in terms of scaling.

That's not to say you shouldn't think about it at all, but there are so many unknowns that it often makes much more sense to spend time doing market experiments rather than technology experiments.
Design’s New Frontier: The IRL Era
I don't think you need 'cl for dolist†. Unfortunately elisp doesn't have TCO, so what you would normally do with recursion in other lisps you have to do with loops in Emacs lisp.

† http://www.gnu.org/software/emacs/emacs-lisp-intro/html_node...
Where can I find alternative design styles and what would they be called? Gradient based?
You could? Then you are definitely caring somewhat.
The underrated perils of medical school
Django-inplaceedit: Edit on the fly
Odd that all the relevant backlash comments are pushed to the bottom.
It's the natural result of removing all unnecessary/uninformative decoration from the interface. Form follows function.

What's missing? What other more appealing, and non-gratuitous/extraneous, forms may follow the function?
I've seen this in a training subscription product I have worked with. Customers sign up because it's a free trial, then don't come back until they're warned it's almost over. The customers that don't use it in the first 30 days aren't likely to use it in the next 30 anyway.

The solution for the provider is to better engage the users during the 30 day trial. If the only email they get during that trial is the warning that it's almost over then you're probably doing it wrong.
It's all of the EU, this is mandated by EU directive 98/6/EC: http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CELEX:...

> That way, you can see that sometimes it makes sense to buy 2x 400ml ketchup (just as an example where I had it recently) instead of 1x 800ml, simply because 2x 400ml is actually cheaper.

That applies to plenty of dastardly stuff too e.g. the big 3-5kg pots of Nutella you see around Christmas? The unit price is often twice that of the standard 750g pot.
We are not arguing that is a bad business tactic or that its not a good move if you want to attract customers. Just that it is a dick move.

It can be both a dick move AND a good boost for Pocket.
There's a big difference between doing this sort of thing in a game and in real life.
"Rather than having a daily list" I check this very regularly, based on the amount of feed items displayed on the icon. And it's hard to tell, but I do end up reading quite a wide variety of articles some days, other days, I just open the interesting ones, but it's just a sensory overload so on those days, I just end up just opening tabs and leaving them there to read in the future.
I couldn't disagree more. I've done 30 day trials and unlimited Free plans. Free plans convert much less often and require much more user support time.

Now, do I think a bootstrapped startup should seek out free plans and betas? Of course. Just dont do that with your app.
As a Swede I found it really weird that the "traffic agency" would be interested in protecting businesses. It really feels like someone is trying to do a direct translation of the US situation.

Lobbying isn't really a thing here, and is actually considered to be corruption. Whenever that sort of thing happens (which is pretty rare), the press is having a field day.
"I spent years of my life perfecting these, learning about algorithms, learning the intricacies and quirks of the various datasets we use-- if someone wants to take my place in this community as "that guy" then I expect them to devote as much time as I have to learning these techniques inside out and then to do something better than me. I have no desire to pass my code off to a masters student and let him naively plug some dataset into it-- firstly because no one should ever rely on a black box in this field, and secondly because these codes all need to be tweaked to account for the different instruments and data structures being used."

The result is that you are important, and no one else can check on you. That's kind of good for you, but there should be a way you can do better.

My junior year in college some psychologists told me about a stastistician who would once a year write a paper demonstrating ways that psychologists mis-used some statistical technique. He would quote 20 or 30 psychology papers and explain why their statistics were wrong and so their conclusions were wrong. They lived in fear of him.

If there existed robust and reasonably transparent code to do what you do, along with great documentation to show users where the pitfalls are, and you got a valued publication every time you showed that a significant result was done wrong and you gave the better version, very likely you would be better off. I'm pretty sure astronomy would be better off.

I don't know how we could get from here to there, but it's something to consider.
Checked because I remember hearing about the somewhat horrific forced swim test. Idea is mice are trapped in a container fall of water; depression is when they give up and let themselves drown.

http://en.wikipedia.org/wiki/Animal_models_of_depression#Des...
I don't find the joke particularly offensive or funny.
The E-Myth Principle is Still Alive and Flourishing
They only thing they (or their subcontractors) have done to date is apply for an exemption which they weren't covered by and then complain about it. If they include the proper information in their app and get it certified as a meter than they might have a case. Now they just come of as spoiled and childish.

Also a sign isn't required and the yellow plate gives you advantages in traffic (bus lanes etc.), but they'll probably want an exemption from that too?
Right. So then the mantra should be "pick the technology stack you know best" as opposed to "don't obsess about performance". They aren't the same thing.
Good one. Anyone here got experience with the original Apache mod_pagespeed in production?
Honestly? I learned that when you stir up shit you better be ready to be on a lot of lists. I am now very paranoid, like have an airwall and never ever talk politics online scary.
I mostly disagree. If you pay close attention to the field of online education one cannot help but notice that the most serious players are not attempting to replace traditional schools and universities. They point out that paying through the nose for the accreditation is a bubble ripe for being pricked by technological disruption, but they still cherish and recommend traditional universities.

The most value these courses provide is ongoing education, mostly in topics one did not or could not study while in school. A programmer might learn economics, an MBA might learn biology or programming, a biologist might dive deeper into physics.

For me these courses are a type of curiosity-driven entertainment rather than learning particular skills or knowledge I might need...
Hmm. Didn't know that was a classic technique. Seems pretty specific and esoteric. Do you get that much?

Anyway, I thought I'd restated (in summary form) exactly what you'd claimed. If not, then please correct me.

And, I didn't add new criteria to exclude you. In fact I was accepting your definition of traction, whatever that may be. Personally, I would beg to differ--given that you have a number of paying customers of which you are rightfully proud--but no matter. It's clear that you felt you hadn't gotten any traction to speak of (i.e. that you were in an "early stage" of your start-up according to your comment), otherwise, you would not have bickered with my initial post.

So, in all, my comment accepted everything you said at face value, then declared it rare. So rare that the OP's point holds as a general statement (though there may be exceptions and you may be one of them).

I see you're now pushing back on that. That's cool. I don't believe it though. I just don't buy that so many early-stage companies sit around neglecting their businesses, but growing in spite of it. If you ask those founders more carefully constructed questions, I think you would find that either a.) when they neglected it, it started to die and they quickly tended to it or b.) they didn't totally neglect it, but found some minimal level of effort to maintain and/or grow it.

And FWIW, I've bootstrapped a start-up to success, so I also speak from personal experience. Even today when we slow down our promotional efforts our traffic (and business) starts to wane. And, that's far from complete neglect. Still, given enough time in that "mode" it will die.
Nope, not from the last export I did a few weeks ago. Please check and make sure, because this is a crucial link to the level of trust with the continue support of Parse and FB
Slightly tangential, but the KissMetrics 14 day trial makes little sense to me regardless of their target customer base. With an Analytics package you need time to set it up, then time to gather data, then time to analyze it to see how beneficial it is. 14 days just isn't enough to do anything of the sort. That said, I am a satisfied user of KissMetrics. Both their sales and their support team are incredibly helpful and responsive.

The author compared KissMetrics to MixPanel, two services that offer relatively the same thing. MixPanel gives a free account up to 25000 events instead of a 14 day trial. This is a much, much more useful way of introducing the product to a new user.
looks good! keep up your good work.
I've been thinking the same thing. Although, reading about how it works does help alleviate my concerns somewhat: https://github.com/pagespeed/ngx_pagespeed/wiki/Design. At the least, it seems like something worth playing around with.
> Generally, though, you want the time period to end after the user has seen the benefits and before they have exhausted their initial enthusiasm or encountered any bugs.

Corollary: do not end the trial, whether it is time-limited or usage-limited, if the user couldn't verify the expected benefits before it's over.

For example, at my company, we help vacation rental owners to publish their property on multiple websites. We've learnt that 1 month was, in fact, too short a trial for people to fully appreciate our service (for reasons that would take a long time to explain here). YMMV.
Comic experiment 2
Usability failures include low contrast, no delineation of borders, and no visual cues for the interactions that are permissible for different parts of the interface (e.g. "clickable" button vs. bare text).

Sigh. I like the aesthetic but fad-monkeys overwhelmingly fail at the engineering part of design. You can be simple and elegant without going backwards on other usability principles.