skysight-inc/HackerNews huggingface dataset:
$5 for a 20pc and ~$4.50 for a 10pc is fairly standard among franchises and regular at corporate stores.
The system will not catch everything in any way - but what it does catch has no false positives by definition. We're very happy to demonstrate live the value proposition and how alerting is one aspect of what we do.
> Throwing out food feels bad.

https://en.wikipedia.org/wiki/Loss_aversion
Yeah, it's weird. My sons (2 and 4) absolutely love the first Cars movie, but they won't be watching the second until they are a bit older. It's quite a step up in menace and violence, sadly.
India’s Micromax Churns Out Phones Like Fast Fashion
i don't think the people at McDonalds actually went through all these theories to come up with the pricing for nuggets

My guess is, the folks at McDonalds contracted out this problem to some firm, and that firm used A/B testing to gradually refine the pricing until it got to some optimal state, which just so happens to have 10 nuggets being the same price as 20
The buyers are undergrads. They could easily turn around and sell the remaining 10 nuggets for $1 to their roommate or classmates. There are always hungry people within arm's reach looking for a deal in college.
This happened for me with free ice cream that comes in a meal. I asked cashier not to make it.

- But it comes for fee

- I don't want it.

- It's free. It comes with a meal.

- Just skip it.

She still made it. I ate a third of it. Don't like throwing food away, but it was too much.
The conclusion of that article actually doesn't seem to be that the Hyperloop is technically infeasible - only that the original spec does have issues, and it glossed over those issues.

"I’m not saying that the problems with Hyperloop can’t be solved. Money, time, and talent can solve any problem that doesn’t involve breaking physical laws, but I wouldn’t put my money, time, or talent in the hands of someone who takes me for a fool."
Yep, I agree here. Sounds like to me the article is trying too hard to sound smart in its "research" and "economics", and consequently fails to make some simpler reasonings, such as perhaps they didn't want to waste food. Or in other words: 20pcs for 6.40 is the REAL pricing, they just offer a smaller portion (making them more profit) for the same amount of money, if you so desire.
I was curious so I looked up recividism rates. One of the more unsettling results:

The Harris and Hanson analysis included a sample of 1,038 rapists. Recidivism estimates were reported for three distinct followup periods: 5 years, 10 years, and 15 years. Sexual recidivism rates for rapists, based on new charges or convictions, were 14 percent at 5 years, 21 percent at 10 years, and 24 percent at 15 years.

http://www.smart.gov/SOMAPI/sec1/ch5_recidivism.html

(That's for rapists specifically; the "all sex offenders" bucket has much lower overall rate)
I see Linux and OS X, where are the iOS, Android and *BSD binaries?
This is great - thanks for doing this. We did something similar, helping people build their own OpenVPN servers here: https://www.tinfoilsecurity.com/vpn

I'm all for more great and easy-to-use VPN tools! :)
Wife Hack joke
I've had beers with a lot of people who had given two weeks at various employers, and in many cases where the person was a little disgruntled, their narrative went all the way back to the beginning of their employment.

Which to me means that the way you treat them during the interview and their first weeks at work end up being part of the calculus of Stay or Go. I've really taken this to heart, and I'm profusely embarrassed if for instance their equipment is not there day 1 and I'm working order.
>Indeed, you'd need to ask non-white, non-Asian employees about their experiences there.

Well, seeing as I am a non-white non-Asian former Google employee....
Excellent. Thank you for taking the time to pull some data out of the anecdotes. There are all kinds of tricky issues with this, as this is a small dataset, but by identifying categories you've created a template that could be used to further actual research.
The A/B testing came to the conclusion that the sales are the best like this. Nobody knows why...
As much as I hate broaching the topic on HN, I'm really excited about the potential for blockchain or other distributed consensus-based technologies to disrupt the many centralized authorities that are currently so critical to operation of the internet. Namecoin, for example, is really interesting for this reason.
Or software sometimes.

At KFC If you place your order as "2 breasts, 2 legs, 2 wings, 2 thighs" you pay 4 dollars less than placing it as "8 pieces chicken only". The same exact order, but when they punch it as 8 pieces it costs more.

Go figure.
Sure, as long as you want no academic career after your doctorate. Most doctorate students I know start stressing if they have no publications by their second year. That includes multiple biology and chemistry grad students.
for example, my redis container (samsaffron/redis) is 20mb, the official(tm) redis container is based on ubuntu is 100mb
Sometimes, many times, I would pay the same price, but take less food. That is e.v.e.r.y time I eat at a restaurant. The portions are just too large, and I prefer to not take anything home.
Maybe the two items target different groups of clients with different budgets (single people versus families?), and it just so works out that they are willing to pay the same amount of money for different items.
Man shoots downs neighbor’s hexacopter
> I was gone within a few months, my other coworker soon after, and the most senior engineer on the team transferred within the company.

Translation: Amazon suffered almost 100% knowledge loss on the systems your team were the exclusive owners of. The cost of this kind of thing is staggering and yet I've seen companies discount it again and again, over decades. It's insane.

And as to your current gig: run. You'll never be able to grow a decent team with an idiot in charge, and you've got an idiot in charge. Get out, if you can. Nothing but good teams build good products, and if you can't hire a good team because you've got an idiot with a veto you'll be stuck building mediocre (at best) products.

It's a pity there is no actual demand for quality software developers. If there was, this kind of nonsense would be abraded away by market forces with incredible speed. The fact that it persists demonstrates that hardly anyone really cares whether they get good developers or not.
This checks out. Closest theoretical approaches:

>>> "%e" % (Pluto.orbit.periapsis - Earth.orbit.apoapsis)
'4.272109e+12'
>>> "%e" % (Mars.orbit.periapsis - Earth.orbit.apoapsis)
'5.455552e+10'
>>> "%e" % (Moon.orbit.periapsis)
'3.631042e+08'
>>> "%e" % Earth.radius
'6.371000e+06'

Earth-Pluto: 4.27 Tm = 4.27e9 km = 2.65e9 miles

Earth-Mars: 54.6 Gm = 54.6e6 km = 33.9e6 miles

Earth-Moon: 363 Mm = 363e3 km = 226e3 miles

Earth radius: 6.37 Mm = 6.37e3 km = 3.96e3 miles
But that's not the reason. Personally I find Lisp superior in most respects, but I don't think it's a good place and time to argue on Lisp vs Racket and similar topics.
As an Aussie living in North America I can tell you that portion sizes over here have absolutely zero to do with what people can actually eat.

Even though they've eliminated Super Size (since the movie) the large coke at McDonald's USA is still massively bigger than the large in Australia

More is more.
Interesting, this is very observable in the mating selection area.
The cost of their "material interests" is too much for society. And we already paid for said research by government grants.
Ask HN: How to solve this problem
When I upload my files to gumroad.com

it's mean third party have access to my file and open it freely without my consent right?
It is possible to have more losing trades than winning trades and still come out ahead. It comes down to how quickly you cut losers and how disciplined you are at letting winners run (not taking profit too early). Risk management is critical to not losing your shirt in any market.

Conversely, it is possible to have more winning trades than losing trades and still lose money overall.
i have a question about this

https://news.ycombinator.com/item?id=9792610
At the telco I just left we often had this scenario for a few different reasons - decisions made by committee, lack of documentation, people quit/retire/move, etc.

Nobody knows the details about massive pieces of the business.

I just stopped asking "why".
You can freeze milk, you know!

My chest freezer has probably been the most economical purchase I have made in the past few years. It sips electricity and keeps (almost) everything as fresh as the day I purchased it.
> GitHub would probably have less of a problem with open sourcing their code because their primary value prop isn't that they've built some brilliant software but that they take the bother out of managing your source hosting.

GitHub is making money by selling their proprietary pack to other corporations so they could implement it on their own server. If they release it for free, they wouldn't be able to support free code hosting services and remain profitable.

They're also selling premium plans for the regular users, but I don't think that this gives them enough profit to remain profitable.
I'm certainly victim of that.

It becomes so common to just whip out the credit card and tap to pay for things you think you know the general price of that you don't even really look at the price anymore.
I'm in favor of "outright banning the use of (WHOIS) privacy services for any domain for which any site in that domain involves e-commerce." In California and in the European Union, attempting to conceal the identity of the business behind an e-commerce site is a criminal offense.

Individuals have privacy rights. Businesses do not. The EU is very clear on this. The European Privacy Directive covers individual privacy. The European Directive on Electronic Commerce covers business privacy online. They're very different.
Seems like the simplest explanation. A franchise this large MUST BE doing price optimization. It would seem irresponsible if they were not.
I can assure you the world's largest fast food chain, in existence since 1940 that has annual revenues of $27.5 billion has spent a massive amount of time and money analyzing and refining the prices for every product.

I can't back it up, but I'd wager they've spent many tens of millions doing exactly that.

(I worked at a telco that was spending an ungodly percentage of revenue doing just that)
One use case is embedded systems. The code space available can vary from a few kilobytes to a few mbs as well as memory overhead. Sometimes you won't even pull an entire library with even though it's small, you'll statically link in only the functions you used.
Isn't that what the "Decoy Item" is?
Why your password can’t have symbols–or be longer than 16 characters
Procedural Heightmap Terrain Generation
>'we built this with nothing but our bare hands' is more than just propaganda.

It really isn't. The port gave the city a much greater head-start than PAP have ever given it credit for.

This intentional misdirection is used to give credence to the idea that it was Lee Kuan Yew's genius and the sweat and tears of ordinary Singaporeans that grew the country out of nothing.

Which isn't to say that the country wasn't reasonably well run. It's just saying that it just wasn't sheer genius or some kind of cultural superiority that pulled them out of poverty. The truth is much more mundane than that.
A few years ago I was at Orchard Supply Hardware to buy some cable ties. They had three different quantities available:

10 for $4

50 for $6

650 for $8.50 - a big plastic canister of all different sizes and colors

(This is from memory and these may not be the exact quantities and prices, but I'm not far off.)

I only needed a few, but naturally I bought the canister of 650. At the rate I use them this is probably a lifetime supply!
so the trust is in Debian or whoever's running your repos instead of MSFT. I don't see how that really changes the dynamic a lot.

The problem with most people's complaints and solutions about certificate authorities is that pretty much every proposed solution, when applied at scale, becomes functionally equivalent to the web of trust system we currently have. At one point you have to trust _somebody_.
It would be more accurate to say, several SQL databases (that you may or may not have heard) of don't provide full ACID in the strongest sense, while MySQL, Postgres, and MS SQL Server all do if you pass the right flags.

In a world plagued by NoDBs, it seems like a very small point.
Url changed from http://qz.com/438723/watch-this-crazy-video-of-an-engineer-r..., which points to this.
I love the Apple Watch and bought them. Should I write whole article for the balance?
The Fourth State of Water (2013)
What's the difference between punishment & revenge?
Heh. s/millions/billions/g
A NSL could set up the gag order, and it could be part of the whole "need to listen to data coming in from abroad" parts of the Patriot Act (though I think USA FREEDOM removed some of that?)

I think that even in the current state of things there's not much standing for the NSA to force that to happen.
Anyone else notice how this website is using click jacking to force you to like their facebook page?
That depends on the definition of "e-commerce", you know. LLCs required to identify themselves – fine.

But an author selling an e-book or a lone developer earning a side income from ads should not be required to publish their home address and cell phone numbers. This is ridiculous.

Somehow I doubt that the definition will be a reasonable one, given everything else in the article.
Show HN: Soapbox – Embed your message in any page with this URL shortener
Perhaps McNuggets are normally sold as combo meals, and the whole purpose of offering cheap 20-piece nuggets is upselling people to a combo with better drink margins. In that case, the relative profit between a 10-piece combo meal and a 20-piece combo meal could be about double in the latter. Perhaps raising the 20-piece prices deceases the likelihood of an upsell.
Unfortunately in real life the protagonist is almost always a bad guy.

I wonder if successful prison breaks select for or against guilt. You know, like maybe actual criminals are more likely to be able to run a prison break, while a chump who was framed won't have that ability.
Could this be worked around by using a pseudonym, registering a PO Box address, and using the number from a pay-as-you-go SIM card? Not false information as such, but not particularly revealing either.

Alternatively, one could enter information that looks plausibly valid but is in fact completely invented. How often does one receive articles in the mail or phone calls to the whois contact points anyway? As far as I've experienced, any communication is to the email address. I suppose it depends what the penalties are if you're somehow found out.
I make yogurt with the second gallon. It feels like magic: I get cheaper milk and cheaper yogurt (free modulo a very modest investment of effort).
There are business that are almost like self-employments, dressed up as LLC or similar, registered to the home address of the owners. It is very reasonable for them to hide their address and reveal it only to the clients that do buy their services (e.g. on invoice).

I would rather have a restricted whois database, where the authorities can look at the street address, but Average Joe can not.
And the hypothetical police officer you are assaulting has no right to punch you?
There are three concerns all browsers deal with: HTML, CSS and Javascript. I know CSS has a lot of contention with people because of global styling and other things raised by this article, and I realize it has much improvement needed, but for where it has come today it's a very powerful language.

Countless beginners, traditional web designers and developers, those working with systems like WordPress and beyond, CSS won't go away anytime soon. It will be years before anything comes along to replace CSS, if it ever does.

I don't know that putting CSS in JS is a bad idea, I see lots of benefits of inline styling, but this religious war against the front-end is only going to get louder and more partisan. Let's hope the discussion stays civil.

I'm excited by the future of CSS for my own career, I hope CSS4 and beyond become higher priorities for standards bodies even more so because of these discussions.
I'm not sure this is exactly loss aversion, but perhaps it's related. I would happily give the second gallon of milk to anyone who wanted it for free. That loss would make me feel better, even though I've still lost the second gallon.
If I claim, "An implementation of this algorithm (described in pseudocode) achieves O(N) peformance on that task" and no one can reproduce it based on the pseudocode, I've published a lie.

This is a phenomenon I've seen many times in my work as a consultant translating academic discoveries to commercial code. This work invovles digging through both published papers and actual code to find that some grad student has implemented a clever heuristic that is not described in the paper because it is "inessential" that is what the claimed performance actually relies on.

The article says, "It's unrealistic to think contract labs or university core facilities can get the same results as a highly specialized team of academic researchers, they say."

I can understand this sentiment: science is hard, and at the cutting edge it's really hard. I've certainly got results that I think it would be hard for others to achieve and I've succeed with experiments where others have failed simply because I have good hands.

I once took over an experiment that had been worked on by a heavy smoker with shaky hands. He had developed a complicated apparatus for streching ultra-thin plastic foils over a frame. I just used my fingers. If I had published the way I did it and someone like him had tried to reproduce it, they would have failed.

However... the kind of reproducibilty being talked about here is not (primarily) technique, it is results. If a result can't be reproduced because the cell line was so very special or whatever, then it likely isn't robust enough to be very interesting in practical biology. It certainly isn't of much interest in drug discovery. So while the science may be OK, results that are incredibly hard to reproduce are of very low value for biotech, and that knowledge is worth something in and of itself.
Best Weirdest Food Inspired iPhone 6 Cases
Hacking Super Mario World to Warp to the Credits [video]
Was incredibly disappointed when this turned out to not be the case. If I Could type out melting letters, this would be the right time.
Two for $x could most definitely yield more profits that 1 for $.5x
The important word is : formal.

I, too, think that the brain is 'a computer'. But the formal definitions of computation we have today require the computer to be left alone for some time between the moment the input is given and the moment the output is due. The brain does not work like that, ergo we lack a formal model of how the brain operates, and thus the definition of 'computable function' -which is based on our model of computation- is less general than what the brain can do.

e.g. We have no proof that the only way neurons communicate with one another is via the synapses.
FWIW, in Germany they sell 4, 6, 9, and 20 pieces.
> Could this be worked around by using a pseudonym, registering a PO Box address, and using the number from a pay-as-you-go SIM card? Not false information as such, but not particularly revealing either.

No. They will require PO box providers to be accredited with ICANN and subject to all these crazy rules, giving you no privacy.

> Alternatively, one could enter information that looks plausibly valid but is in fact completely invented.

This is exactly what all the real crooks will do, but you and me will not be able to, because we don't want to lose our domains.
> Are people really paying a dollar more for a slice of cheese?!

You are exactly right, and here's a news article to prove it:

"The company embarked on a series of focus groups and extensive research. One message was loud and clear: People wanted to get their beloved double cheeseburger, with two pieces of cheese. If that meant paying a bit more for it, so be it. ...

So McDonald's decided on a two-pronged attack. Raise the price of the double cheeseburger to $1.19. But keep penny pinchers happy with a new burger on the dollar menu: The McDouble. Two beef patties with just one slice of cheese. " - http://abcnews.go.com/Business/Economy/story?id=6803935
Amusingly, NearlyFreeSpeech.net, which is a hosting provider run by libertarians, does not allow their customers to be anonymous to them. (Except by very special arrangement for people facing serious threats in non-US countries.) [1] They accept payment in Bitcoin, so, technically, they could offer a fully anonymous service.

So they want to prohibit anonymity when it might hurt them, but allow it when it might hurt the customers of their hosting clients.

[1] https://www.nearlyfreespeech.net/about/faq#Anonymous
iOS 8.3 jailbreak now relesed
Start from the riskiest part
I wonder if a possible solution to this problem would be getting universities to require publication to open access journals as opposed to closed ones. Then journals with paywalls would have an incentive to offer open access options in order to keep the largest amount of papers.
I think this is just a very clever form of price discrimination. In my experience, there are two disjoint groups of McDonald's patrons, those who order off the combo menu and those who order off the dollar menu. The combo menu doesn't have a 20 piece option and the dollar menu doesn't have a 10 piece option. I think this plays into why they are also visually at opposite ends of the display. The people who are looking at the combo menu are far less price conscious to begin with, and an order of 20 nuggets is going to seem overkill of you are working under the assumption that your meal is going to include a drink and a large portion of fries. However, if you are the kind that mentally debates whether you should shell out the extra dollar for a drink, you might be more than willing to forego the fries for an extra portion of protein.

I've found similar tricks are used in vending machines, particularly with the different varieties of crackers. Inevitably, there will be one set near the top of the machine with other expensive items and priced according. However, there is also a half row of ever so slightly different ones further down priced at 2/3 the price.

It's all just a matter of satisfying the demand that exists at lower price levels without having to lower the price for everyone. Setting prices using price elasticity assumes you can only offer a single price to all parties. However, cost-conscious shoppers are already going to spend more mental cycles looking for a good deal. By making the more desirable pricing just a little hard to find, you can give them a better deal without butchering your overall profit margin.
Its mostly a problem if someone decides to target you for harassment (i.e. SWAT-ing). It is ridiculous to expect personal websites to reveal home addresses to the world. WHOIS is definitely another one of those technologies leftover from a more naive time in the internet's history.
I don't see how there is a contradiction between homo economicus and behavioral economics theories. If people derive disutility from wasting food, then it's perfectly rational to choose 10 nuggets over 20 if you only plan to eat 10 nuggets.
Here's a theory: people who buy McNuggets on their own to eat as a meal for 1 to 3 people want to buy 20. The 10-piece is for combo meals, with fries and a soda; it's on the menu because if they have a 10-piece McNuggets box for the combos they'll sell it on its own if you really want one, but they'd prefer not to. They want you to buy either the 20-piece, or the combo, and they don't want to give any price break on just buying 10 nuggets because that's not to be incentivized.