skysight-inc/HackerNews huggingface dataset:
A loss of criticality ensures that you don't end up with a positive feedback cycle that lets the problem spiral out of control faster than you can react, and possibly faster than you can comprehend.

A pressurized water reactor relies on the pressure vessel not being breached in order for the passive decay cooling to work, if that happens we're right back to Fukushima/Chernobyl style problems.

I am talking about short-term "everyone evacuate the building" types of disaster scenarios. You can do precisely that with a LFTR because of the passive decay heat cooling combined with the loss of criticality that happens when the freeze plug melts.

On a longer term the fission products might be a problem with an abandoned LFTR but because of the loss of criticality and the passive decay it's 100% acceptable to just wait for everything to cool down, fix the problem and restart. Or if things are so broken you can't fix them at least you don't have to keep putting people in harm's way to try and prevent a wider-scale disaster. Once things have cooled you go collect the nuclear material and send it to another plant to be used.

The best way for me to explain this is with analogies using potential energy.

1. The nuclear power plants we have now are a big heavy rock precariously balanced on top of a fairly narrow peak. Small movements to one side or the other can be recovered from but at some point that rock has started to move and will move aggressively. It will eventually reach the bottom of the hill but not before crushing everything in its path. We don't really even know how bad the damage can get.

2. A LFTR is like a big heavy rock perched about 10 feet up a shallow hill. It requires some energy to keep it there or else it'll roll down hill. You can't really push it up further so it's safe from disturbances in that direction. If you push it down hill (or cease holding it up) it only rolls 10 feet before it naturally hits the bottom and comes to a stop.

The majority of the things in the world act more like 2 than 1 and thus we aren't terribly scared of them. Yes there are a great many things you can do to ensure that 1 doesn't get away from you, but ultimately you're still fighting gravity.

Let me reiterate, I'm not against nuclear power. I just REALLY don't like the idea of the balancing act that has to be performed in 1 and far prefer the kind of intrinsic safety that you get from 2. I'm all for building plants like 2 even if they're not LFTR based. I don't have religion about the form, I just want as much safety as I can get.
My contribution here is that we have a possible acronym troll on our hands.

Y[t]MN(NJ)

"You're [the] man now, ninja!"?

As in: Code ninja?

Re-use is fun. See?
> No I am not nitpicking a specific blog article

It would be 'nitpicking' to point out that you were not 'cherry picking' one from many possible articles to support your point.
Shipping container. http://theroadchoseme.com/shipping-across-the-darien-gap-pt-...
It's worth noting that the Broncos' best linebacker Von Miller was also suspended for 6 games for smoking pot (prior to it being legalized in Colorado) and then trying to cheat the drug test. Stupidity is not unique to any one team.
1. Isn't covered in the article, but not rushing to get married may help with #1. Don't build on something reckless unless there's a solid underlying base to the relationship. Many people get married because it feels like a logical next step in a partnership that isn't so rubbish that you live apart. That said, building up a relationship early can be financially helpful, spending on one house, both working to tackle one initial mortgage, etc.

3. I think the point about social capital is good. A good combination would be a job with a side-venture (say, photography) that you can build a profile with regardless of what else you do.

6. I don't think that point of theirs should translate to spending excessively on a live-for-the-moment property. Rather than buying a $1m property, there can be significant advantages in buying a $600k property and two $200k apartments to rent out, given that you leverage your tenants while the properties appreciate.
I'm 40 and much of it isn't relevant to me already.
Ask HN: Dashboard to monitor 10+ servers?
I own 10+ dedicated servers, and want to monitor the health of all of them in 1 sleek, simple web dashboard.

Not looking for anything complex, but just want to check the RAM usage, HD usage, and CPU usage of all of these servers in 1 dashboard. Is there anything out there (preferably low cost)?
Awesome! Any chance the keychain patches can be applied against this?
Asking politely phrased questions is not an "attack". I just looked through the last 30 days of his comments, and I don't see anything attack-like there.
As Box was around before Dropbox, how do you say that Dropbox had a "the first-mover brand recognition"?

Do you mean that DropBox had a higher market share of consumers, and so, decided to push toward SMB and Enterprise? In that way, yes, it seems to have been a good strategy.
That's like saying 'don't crash' is good driving advice.
um why is this on the front page ?
I guess we really shouldn't be surprised at this point, but what many don't understand is just how easy it is to track devices, and by extension people, in this manner.

You don't even have to connect to an open WiFi AP, or any AP. As Glenn Wilkinson demonstrated some time ago [1], the probe requests your device sends out can in many cases, identify you or at least the important locations you've been to. Basically, if WiFi is enabled on your device and it's not associated with an AP, it's constantly sending out requests asking for the [E]SSID of AP's it's previously connected to.

I also recommend this video:
http://www.youtube.com/watch?v=03iEaKPRb9A
That's probably why, but I only made it about 30 seconds into the first video before I had to turn it off. Maybe I'm in the minority, but listening to kids present anything really frustrates me.
Such classic Ontario advice: Follow the prescribed path without question or deviation.

For anyone that doesn't buy into it, I suggest you head West. People are genuinely shocked at the difference in attitude when they get here. Almost everyone refers to it as Onterrible, for very good reason.
Many game companies work like this.
If SMS is crappy for you, just take phone calls. There is still jam-in, yes, but you can mostly find a cheap phone connection from any place in the world to any other. I regularly call cross-continent and with some googling, you get a decent rate.

The point being: the system is there and there is competition that drives the prices down.

Also, I don't believe that for a "vast majority of users", federation doesn't matter. Everyone I know uses multiple messenger apps on their phone _or just use SMS_. SMS is the base line.

This is a failure of a model. Sure, Google has no interest of federating with Facebook. What this leads to is the aforementioned silos of peoples communications. "How do I contact this person? WhatsApp, Facebook, Twitter DM, Jabber, Google Talk, jadajadajada?

The only thing that comes close is email.

No, I don't expect multi-billion dollar companies to do something that sounds nice. Which still makes the model as a whole a failure. Obviously, multi-billion dollar companies cannot be trusted with providing reliable and easy reach-ability on a global scale.
https://github.com/neiesc/ListOfMinimalistFrameworks
Me too. I suspect there's medium and longterm costs that probably skew my "gut feel" of how much cheaper that'd be. I wonder what the real costs associated with feeding a roomful of local servers replacement disks/ram/powersupplies are, and what a realistic replacement schedule for the hardware is?

Sure AWS is expensive for 24/7/365 applications, but I suspect there's some "in between ground" where Amazon's economies of scale make it less expensive to just pay them to deal with owning and maintaining the hardware (and ensuring you write your applications to be able to deal with cloud instances vanishing underneath you randomly).
It's 50 50 that the person who knows how to save the company in such a scenario is the minority owner. Collaboration is better than lines in the sand. Throw a minority partner into the mix - say 5%. What good is 47.6%?
Visa CEO Responds to Question About Bitcoin
Ask HN: Recommendations for learning formal distributed systems?
I haven't been able to find a good video lecture series that teaches about formal distributed systems. I don't mind only textual things either. What is good place to start?
Knowing nothing about aviation, I would guess this was a test flight that had to happen anyway.
Peek Calendar: The Calendar Humanized
Even as Apple encroaches on this, I'm glad to develop an application for OS X does not require me to continuously pay Apple $100 every year. I'm also glad I'm not required to have Apple be my application vendor.

The situation is getting worse however. With each MacOS release Apple increasingly exerts its control over accessing resources on the machine and distribution of the application itself.
747-800 burns about 2,900 gal of fuel per hour at cruise altitude and speed. This was done at 12,000 feet which probably doubled the fuel consumption. Without accounting for takeoff/climb fuel, we're looking at around 32,000 gallons of jet fuel. Cheapest fuel BFI is 5.59/gal so a good estimate for the total bill would be $178,880.00.
Calculate the amount of memory required for a 320x240 256 color display: 320*240 = 76.8KB. An Arduino only has 2KB of RAM, so an external controller has to do basically all of the drawing opereations. This controller has its own SRAM framebuffer.

Once you get larger than 640x480, it becomes impractical to have the framebuffer in SRAM. DRAM is the obvious choice, but increases system cost and complexity sharply and so you first see it on "application processors", e.g. Cortex-A7 and up.

Also, DRAM PCB routing is very complex, and the connection from the display controller / system-on-chip to display is also critical.
How to Find a Sample GED Test
Actually, most aeronautical charts use the Lambert Conformal Conic Projection.

I'd guess that the reason it looks straight on flight aware is just that the distances are relatively small.
Wonderful to see them using a modern, time-hard KDF finally.

One wonders where the kickstarter to get a proper time- and memory- hard KDF patched into GnuPG is? It's not even really that much of a compatibility issue, either (unless you are sharing private key files between many machines)...

You'd really think the tinfoil-hat paranoids that (until Snowden) comprise(d) the bulk of the pgp userbase would care about the keys used to keep their log-term keys on disk private. I was flabbergasted to see the (relatively) tiny number of iterations in use in the GnuPG kdf.
Go Broncos!!! :)
IME people will do things like book online and then call because they don't trust the booking app. And that's the people that will bother to fill out the form rather than just ring up anyway.

If you're relying on an online system too it has to be absolutely solid - which means expense. Or at least more expense than a wall-calendar or a paper diary [book].

It's hard to have an over-view of, say, the next couple of months work with an online system - a big wall-calendar makes things easier to visualise. Of course you could have a massive touch-screen computer ...

If you're running a salon, with multiple barbers then I can see it being cost-effective to try and have customers self-schedule but it seems for a single barber that they'd have to be very up-market to make it worth while.

Would you go to a worse barber so you can schedule online instead of by phone? Would you pay more, how much, to be able to schedule online?

Personally if I use a barber's it's a simple drop-in service.

[Any suggestions for an appointments booking system to check out?]
I can almost 100% guarantee you that having an automatic slider killed a lot of upvotes for you. I'm not trying to be a dick, I've actually seen this over an over, and I experience it as a user - if I see a Show HN, I'm upvoting unless I have a reason not to. I despite automatic sliders, and yours is particularly egregious. Long term, it's a tiny mistake in what seems to be an otherwise interesting project, so I'd do a way with it immediately to avoid the distraction.
I was more referring to the idea that once you lose the ability to pump coolant, the reactor starts to heat up. Then as it heats up, it starts to melt itself. As it melts, it re-attains criticality and begins to generate more heat, which leads to more melting, which leads to more heat, ad nauseum.

We don't really even know when this stops or how it stops or whatever because the only time (so far) that it really started to get away from us (Chernobyl) a bunch of brave men gave their lives and dumped boron straight on the exposed reactor core to stop it. By doing so they spared us from gaining the very painful knowledge of how a meltdown ends naturally, at what point an equilibrium is reached.

EDIT: spelling
DOM selectors and events are critical, maybe ajax. Perhaps you could pare it down a bit - I don't need the animation stuff. I have no idea what the size using only what I might need when I needed it.

But then that becomes a whole another endeavor - how much load time will be saved by only using the parts you need, and how long will it take to figure out what you need and what you dont? It's all about return on investment. What do I need now, what won't I ever use, and what might I use later. It becomes more work to save, what, 1/4 second? Maybe a bit more on mobile. It isn't worth the trouble.

The whole obsession over the load time of jquery feels like an exercise in OCD.
I was under the impression that it had been, though I don't know why i thought that.

You're totally right. Do we know why it hasn't been, yet (if indeed I am misremembering)?
Thank for your comments, really insightful ideas. A lot of what you say we are already seeing. For example in Turkish, where the quality of the MT output is not as good as let's say Spanish, we are already seeing our translators replacing entire chunks of text. Interestingly, in other language pairs, the output is close enough that there is usually minimal changes in the output.

We have been thinking about having the editor position, we are experimenting with the concept and how it fits with out current workflow.

Anyway, thank you for your ideas, really cool.
Well -- when you are spending 6+ million a year on AWS, a smaller VPS provider might not work out because of scale.
True - I'm actually assuming this is a 49ers fan commenting, so I wasn't making a comment in relation to Von Miller. To be fair, Browner is being suspended an entire YEAR for something he did before he was in the NFL that is now legal in the state he lives in and did NOT try to cover it up. Amazing.
Upvoted for the irony!

My 1st two start-ups made the front-page.

My current and I think best yet hasn't had the same good fortune.

good luck to you!
The author is a woman and statistically one could argue control over divorce in the modern west is with the woman. Among the college educated 90% of divorces are filed by women. More generally it's 70%, but some argue that when the husband files he's very often not doing it of his own accord.

There are large numbers of divorced boomer women going into old age alone and poor figuring out they made a huge mistake.

So for a female audience this is probably important advice.
What rights am I ceding?
Shouldn't your laptop/disks be fully encrypted anyways? It's good to have a strong KDF, but the stolen laptop threat should be already covered, I'd hope.
How do you get asynchronous evaluation without the use of web workers? My understanding is that, without web workers, javascript and the browser share a single thread, and executing javascript freezes the UI.
Wow, you hacked HN whit this post to be on the frontpage congratz you made it and now i will check interviewsy.com.
In my personal projects (and clients' too unless paid extra), I target for modern browsers + IE10 and haven't used jQuery for long time. Native APIs are good enough once you get used to them. Actually jQuery starts to feel cumbersome (this binding in .each() etc).
Fair point. I'm actually not a big fan of the automatic sliding either. I just didn't think to take it off. I'll definitely do that now.
Nah, we were really just talking about this today. We use minimongoid and we are using the has_many/belongs_to and I was curious how other people handled joins outside of the page.

;)
Haha, I know, right?? What's your current project? I love checking out what people are passionate about.
I completely agree. There is a paragraph of text that you can't even read because it moves to the next slide too quickly. Since I couldn't read it, I stopped trying and left the site.

In addition to removing the slider, it also could help to find a way to quickly sum up the benefits of the site using a very short sentence instead of a paragraph.
How is IPv6 deployment going in the mobile networks? That could solve all these NAT problems.
Help us fight online fraud. Lead product marketing at Sift Science
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Our team includes several ex-Googlers with experience spanning e-commerce analytics, search quality, ads quality, and speech recognition. We value respect, collaboration and creativity, and don't take ourselves too seriously. We want to create a great place to work -- a company is nothing without its people.

Responsibilities:

* Translate new product/technical capabilities into meaningful customer benefits, including concrete positioning and messaging for all new product features

* Generate and nurture qualified leads via content marketing (whitepapers, case studies, social media, infographics, webinars, etc.) and digital marketing (SEO, A/B testing, email, ads, etc.)

* Evangelize and demonstrate the product to relevant technical and nontechnical audiences at tradeshows and conferences

* Plan and execute successful product launches, working closely with product, engineering, PR, design, support and sales

* Create copy, diagrams, videos and concepts to bring Sift Science to life on the web site, in collateral, and in presentation materials

Our investors include Union Square Ventures, First Round Capital, Max Levchin (PayPal co-founder), Marc Benioff (Salesforce CEO), Chris Dixon (Andreesen Horowitz), Y Combinator, SV Angel, and others well-versed in e-commerce, payments, and enterprise software. We offer market salary, meaningful equity, health insurance, etc. just like everyone else. But what’s most important is the work you do and who you do it with. Everything else is just icing on the cake.

Let’s make the Internet a better place. Send your resume / GitHub to jobs+hn@siftscience.com
A UI Semantics is probably essential before you start authoring HTML with application semantics, like HTTP Verbs via AJAX. So there's an essential need for things like LESS and SASS to provide managers for states, easy to follow metamixins for liberally namespacing HTML through classes at least.

https://github.com/OscarGodson/HTML6 anyone?
U.S. Army And Lockheed Martin Complete Advanced Autonomous Convoy Demonstration
This is what happens when there's no downside (other than cost) to trademarking something. It doesn't hurt king to try, and the worst that happens is they don't get the trademark approved.

But when/if it does succeed, they are able to prevent anyone else from riding on the tail of their heavy marketing spend.

I don't like what they are doing, but they are just trying to maximize their profit, and also prevent their competition from free-riding off their marketing.
> The livery doesn't appear to be just for the Superbowl

It's new. There's some youtube footage of the same aircraft doing test flights a few months back. Plain white, and weathered, fuselage and tail.
>plenty of barbers have such a system //

I'm really interested in this. Could you link some?
It's not obvious how to run examples after editing — it's explained in readme.md, but I didn't see it the book itself.

[It's Ctrl-Enter. Actuallghy just pressing Ctrl is enough.]

Ideas to make it more discoverable:
- re-run an expresion when the editor is unfocused.
- add a "▶" button in the corner of each editor.
- add a tooltip with the kbd shortcut on the "▶" button
Somebody correct me if I'm wrong but my understanding of goodwill is that it is calculated as the difference between the net asset value of an acquired company and its acquisition price; that is, Google buys Motorola for $12bb, net value of all Motorola's assets is say $8bb, then goodwill increments by $4bb.
I believe this is a video of the demonstration https://www.youtube.com/watch?v=HseUNLP6q24
You can rely on real estate if you know the government will continue to subsidize its appreciation. But if you expect that it will eventually prove to be unsustainable and must be ended, the returns might not be so rosy.

And defined benefit pensions are only as secure as whatever is trapping those who must pay for it. If your company manages to free itself from the union or the taxpayers refuse to pay you, it could be painful.

Oh, yes, things never change, I know. Its never happened before in the history of mankind. But there's always a first time.
i Love the campaign.
If you look at the indicators, Canada is in a worse situation than the US back during the peak of the real estate bubble: debt levels, housing inventory, etc.

http://www.greaterfool.ca/wp-content/uploads/2014/01/chart.p...

Also remember that Canada doesn't have 30 year terms to their mortgages. Most people have 5 year terms. When rates go from 3% to 6% (which is still historically low) you'll see a lot of people who won't be able to afford their payments. At least in the US you're locked in for 30 years which can reduce the likelihood of not being able to afford your payments.

The other issue is that some lenders are enforcing an 80% loan to value ratio. In other words, when you get to the end of your 5 year term and you only have 15% equity in your home (because of a drop in value), the lender may demand the other 5% (in cash) or else you don't get financing.

And in terms of lending standards, yes, Canada tightened those up, but for a while you could buy a house with 0% down and a 40 year amortization period. That did nothing but push prices even higher.

I'm not saying Canada will see a exact repeat of what happened in the US, but a correction will come and it won't be pretty.
I am interested what happens when you don't initially make it to the front page, but then your postmortem does, and it links you to your original project. What is the conversion % of people who then check it out?
Good on them! This whole debacle has angered me and I hope the little guys win.

I would have had no issue with trademarking "Candy Crush Saga", but that's it. Ffs, King's games are already clones of other games.
Aside from just having a good article/project, it takes good timing, good luck, and sometimes some good upvotes from friends to make the front page. I've had a few things which I was sure would take off not make the front page, including a combined ruby and rails security vulnerability, as well as a project with plenty of publicity and 50,000+ views on XDA.
What an awesome gesture. Go Seahawks!