skysight-inc/HackerNews huggingface dataset:
Is there much dust circulation on the surface of a comet? Mars has its dust storms, but I didn't know it was an issue on comets
Having wrestled with severe depression for many years, I've learned a few things.

1) There is hope! Don't give up.

2) Many people will not understand. That's okay.

3) Cognitive Behavioral Therapy (CBT) works. It's hard work, but it's easier than having depression and anxiety. It's really about renewing your mind. Best book on the subject is an old one: http://www.amazon.com/Feeling-Good-New-Mood-Therapy/dp/03808...

4) You have to find help from others. You will likely run into quacks, and well-meaning but unhelpful advisers. Don't give up.
Glyph Metrics
Can't really appeal to the speed of light -- light travels 1000 miles in 5.3ms.

And for comparison, ping to google is 3ms in my apartment.

If ping to google is 200ms, can you play traditional online games (Counter Strike, TF2, etc) without issue?
alayne may have hit the wrong reply button?
So, um, you're still wearing your bluetooth earpiece as an accessory, then? Bold choice.
This is huge. People don't understand how close we are to the 'point of no return' in regards to fish species and the ocean's ability to sustain life.

Asian countries are a key source of that problem. Guess which one...
Nicely put.

I'd also argue that the divide between dynamic, and static typing systems has fallen down. Almost completely.

Java/C# and even Haskell have dynamic typing. They even sort of have a scripting feel.

However, you can also statically type dynamic languages, and dynamic languages are getting static typing too. For example, JavaScript with asm.js. Lots of type inference is done by IDEs and lint systems now. Even with python, static type checking is very possible (both at the C level, and at the python level).
(Sorry for continuing the rather long discussion, but I'd like to achieve some resolution here.)

By "real", I mean that the concept of a density matrix is derived completely on top of the postulates of quantum mechanics in combination with the Born rule. There's nothing fundamental about mixed states; you can also have classical mixed states (e.g. deriving thermodynamics from classical statistical mechanics). It's essentially just taking the postulates for pure states and applying a layer of statistics on top of it. I believe it was von Neumann that originally did this? In other words, the density matrix formulation does not add any additional predictive capability to physics that the original QM from the 1920s did not already provide. It's just a more convenient tool for connecting QM to experimentally realizable systems. Do you disagree with this?

When you lose entanglement due to decoherence (specifically, the off-diagonal terms of the density matrix approaching zero), these correlations are lost because you're essentially performing a measurement. But they still exist in the whole Alice + Bob + you and your measurement device system! But then, this starts treading into the discussion of the whole unsolved measurement problem which I kind of wanted to lurk around, since no one ever gets anywhere with those discussions.

Indeed your last point ("To say that we should do better and bring the environment back into the picture is missing the point") is essentially the whole picture I'm focusing on. Perhaps my background with quantum chemistry has slanted the way I explain things on here, because you're never collapsing these systems when you perform simulations of them to calculate their properties.
Tokyo is a paradise for living but a desert for doing a traditional startup (see below). On the other hand, Japan is the most viral place on earth. Hypergrowth companies here are based on viral marketing (any exceptions? Let me know).

If you're working on a viral marketing opportunity in Tokyo, please get in touch with me.

[Tokyo is a desert for traditions startups because:

- Exits are rare and at low multiples

- Funding is hard to get and include irrational terms, like personal guarantees.

- Customers prefer to buy from established companies

- Employees prefer to work for established companies]

Companies based on viral marketing can route around these problems. It's really a terrific place if you are ready for it.
I know no specifics, but the gamedev wiki page[1] lists a few, and you can definitely ask on #rust-gamedev on irc.mozilla.org or even the rust_gamedev subreddit.

[1]: https://github.com/rust-lang/rust/wiki/Computer-Graphics-and...

[2]: http://www.reddit.com/r/rust_gamedev
and for the whole picture vis-a-vis game dev:

"I do believe that there is real value in pursuing functional programming, but it would be irresponsible to exhort everyone to abandon their C++ compilers and start coding in Lisp, Haskell, or, to be blunt, any other fringe language.

To the eternal chagrin of language designers, there are plenty of externalities that can overwhelm the benefits of a language, and game development has more than most fields.

We have cross-platform issues, proprietary tool chains, certification gates, licensed technologies, and stringent performance requirements on top of the issues with legacy codebases and workforce availability that everyone faces." [0]

Which may be why we haven't heard a peep from Carmack on the subject since. Could see pure FP languages entering performance critical domains like game development in the not too distant future, but for now the state of the art isn't quite there.

[0] http://gamasutra.com/view/news/169296/Indepth_Functional_pro...
I suppose a little.

Actually, I modified the analogy to "arrive at a city". I feel like Reddit is more like a city than a single dwelling. And I can understand continuing to use roads while avoiding certain cities.

I still don't agree with your original point, and maybe the analogy is biased in your favor (it is your justification after all, so I cant really counter), but yeah, fair enough, I like your justification. Thanks for entertaining my curiosity.
His book the C Companion [1]

Really helped me get a deep understanding of C. Sadly, I haven't touched C for such a long that I've forgotten most of it. I highly recommended it for anyone who has a basic knowledge of C and wants to get deeper.

[1] http://www.amazon.com/C-Companion-Allen-I-Holub/dp/013109786...
Yeah, I know. My rant further down the page on inaccuracies in teaching is coming back to haunt me now. Ironic, isn't it? I was glossing over specifics and loosely conflating concepts to form a point.
>Fact: If you look different, people will make fun of you. Apparently that isn't something you outgrow as an adult.

If Glass evolves to the point that it's mostly providing visual assistance for people with impairments, I don't think that people are going to make fun of it. But people make fun of tourists with their heads buried in maps, of people recording inane videos constantly, of people texting without paying attention to where they're walking, etc.

To rephrase that: people make fun of the behaviors that Glass seems designed to facilitate.
> I watched the first few seasons

The first 3 seasons are quite funny and with plenty of sciency stuff, but it starts declining around the 3rd or 4th season. The season 4 episode featuring Sheldon's robotic telepresence and the Steve Wozniak cameo is perhaps the high point in humor, after which the whole thing goes pointless.
> Quantum interference is observable with even a single particle.

Yes, but only if that particle is in an unentangled state. If that particle is entangled then the only way to observer the interference is to make measurements on both the particle whose interference you wish to observe and the particle with which it is entangled.

This is simply the old canard about measurement "destroying" interference (because measurement and entanglement are the same thing).

> Entangled particles certainly can, and do interfere

That's true, but the way in which they interfere is different, and the procedure you need to perform to observe the interference is likewise different.

> Can you give me, in ket notation, an example of an unentangled state?

|U> + |D>

Or if you want two unentangled particles:

(|U1> + |D1>)(|U2> + |D2>)

as opposed to the entangled state:

|U1>|D2> + |D1>|U2>

(Where U and D are intended to designate something like spin Up or spin Down, but that doesn't really matter.)

> if you're referring to a direct tensor product of two single particle states, I'm still considering that an entangled state since it can unitarily evolve out of that configuration into one that can't be written as a tensor product

That's news to me. How does that happen?
Many of them are supported by multimedia/webcamd, though the name is kind of unintuitive for it :p
Wow! I never thought of paring a bluetooth keyboard. This could be an excellent use case for something like Ubuntu Edge. A full operating system, displayed through glass and bluetooth keyboard attached. Sounds prefect to me :D
The correct statement for the first one is that the wavefunction for a system of fermions must be antisymmetric under the exchange of any two particles (the wavefunction flips sign). For a system of bosons, it stays the same.

The correct statement for the third one is that energy is not a substance; it's a number that is conserved as a result of the invariance of physics under time translations (see Noether's theorem). Thus, mass has an energy associated with it (see stress-energy tensor), and a particle that has mass can be converted into other particles that do not have mass, but energy is just a property that remains constant (except under GR, but then that's a whole other can of worms).

bmnmasdas pointed out what I meant with HUP.
Koala: your automatic personal accountant
Apple kill third party SSD support in Yosemite
It bemuses me that on HN, people push for CBT, positive thinking, more time spent on exercises, relationships, basically all of the outward signals of American professional and social-media "well-being."

What needs to be mentioned is that the author despite his professed history of severe clinical depression, is a published author of somewhat notability, whose last book was vouched by James Wood, the literary critic of New Yorker. And despite whatever professed outward collective-mentality present in IT, I know that many of my friends and co-workers suffer from existential doubts, personal isolation and obsessive-compulsive behaviors in private, if not more so. If anything, the fact that the author chooses to share his personal history so openly makes me more comfortable about his handling of personal issues than others who lead double of lives and "#winning on facebook" and "suffering alone."

As another perspective on depression and anxiety counter to the HN's mainstream answer, I highly recommend "Happiness and Its Discontent" essay here (http://chronicle.com/article/HappinessIts-Discontents/144019...)

"But we are mistaken when we interpret anxiety and other forms of existential disorientation as being at odds with a well-lived life. It may well be that they are an essential part of such a life."
So not available for "us"?
Except that to perform the level of checks that a compiler does with a good type system, you would have to write a large amount of tests. Code is a liability, and testing code is no exception.

Writing tests in static languages is still required. You just have to write a smaller amount of them. What's more, type checking is enforced in a more systematic way. With tests, you have to rely on people to write them. If a type system is well designed, people will use it to model their code, and the type checking is done automatically.

What's more, types should not be reduced to the type checking phase. Types are a way to provide a high level model/structure. You still need this if you are working in a medium/large project. With static types, this model have nicer semantics, and is more useful.
"Sorry, but something went wrong and your connection was interrupted. Please check your internet connection and reload the game."

Couldn't get it to work on my Firefox, but I was able to drive around fine with IE9 (yuck)... There weren't any other players though.
Except that the first iPhone was massively popular.
Hey there HN! I am one of the authors of this library - if you have any questions, feel free to ask. Kvark, one of our key contributors recently did a talk at the Toronto meetup[0] (starts from ~53:00) discussing some of the design of the API.

Bear in mind that the API still could use more work, and could be documented better, but it is already pretty promising. We currently only support OpenGL as a back-end, but hope to support more APIs in the future. This support is currently blocked on a some language features being fully implemented.

The biggest project built using gfx-rs to date is hematite[1] - a re-implementation of Minecraft. Colin Sherratt is also doing some neat work with it in his engine, snowmew[2], which is more graphics intensive.

If you are interested in having a chat with us, feel free to hop on our gitter room[1] or #rust-gamedev (irc.mozilla.org).

- [0]: https://air.mozilla.org/toronto-rust-meetup-october-2014/

- [1]: https://github.com/PistonDevelopers/hematite

- [2]: https://github.com/csherratt/snowmew/

- [3]: https://gitter.im/gfx-rs/gfx-rs
This is a bit off-topic. I just moved to Tokyo a month ago and Jay was very welcoming. I met him at last month's Hacker News meetup. It was just two days after I landed so I was pretty nervous.

Since then I've gone to 5 meetups. One thing that I've learned is Business Cards are vital. So much so that I've decided to bite the bullet and print up some of my own even though I'm still job hunting.

He didn't mention it but from what I can tell the Taxis here are a world apart. Stuff like the doors automatically close for you and the drivers all wear suits. Sorry I've only been taking trains everywhere.

The trains themselves are also a major plus point for Tokyo. My house is along the Mita-line and almost everywhere I go is is just a single connection away. The busy hours are not that bad too since my head is above the crowd.

I still get a thrill everytime a 10 car train rushes past the platform.

Also half of everyone wears suits. Even people in otherwise "low-class" service jobs wear suits.

Anyway: if you are in tokyo you should 100% visit the next HN meetup on the 21st. If you're new feel free to email me and we can meetup and walk together from the station. First time I came here I arrived an hour ahead of time to find the place. That turned out to be a bit early and it got cold waiting outside.
" At the same time, price discounts on books are limited to 5 percent and can’t be offered in conjunction with free shipping."

They've recently just tried this law in Israel.
The result? The printing of New books has screeched to a halt.
When you can't offer discounts on new books, the publishers are only willing to take the chance on famous well established authors.
The law is especially absurd, because even if you're a self published author, you can't offer discounts on your own books.

When you pass laws against book discounts,
fewer books will be published, fewer books will be bought and fewer books will be read.
Children with cancer dance with KSU students
Presenting – The Perfect Face for Radio
Akismet is probably the biggest alternative.
Fortunately, science is largely unencumbered by the fashion choices of the people who participate in it. Furthermore, as outlandish as this shirt may be I find it to be quite refreshing that a tatted up metal fan wearing a shirt like this can still be well-respected in his field for his accomplishments and rise above a moment of questionable judgement and a fashion faux pas.
I think he is just taking the opportunity to quote Benjamin Franklin. Not so much offering an argument of any hue.
I would also recommend checking out tomaka's glium[0] wrapper for OpenGL. It takes a different tack when it comes to providing a thin, statically typed graphics API, so depending on your preferences it might be more your cup of tea.

- [0]: https://github.com/tomaka/glium
The density matrix is as real as the wave function when it comes to describing the corresponding subsystem. In the situation I was sketching, there is no measurement, no collapse, and the "measurement problem" does not play a role. Here is a concrete example: Suppose that you have three spins that are in a superposition of |000> and |111>. Alice has one the spins, Bob the other spin, and the third one belongs to the environment. The reduced state of any two of the three spins is NOT entangled. Therefore, Alice and Bob which will not be able violate any Bell inequality, win a CHSH game, distill Bell pairs, etc. if they only control two of the three spins. It is irrelevant that Alice is entangled with the joint system of Bob and Eve.

Again, the basic point is that the notion of entanglement refers to a choice of subsystems. Your statement that "All components of a quantum system are always entangled" is either trivializing the discussion or demonstrably false.
I'd typically have 2 Sennheiser EW500s, with the receivers and transmitters using 2 AAs each, plus 2 or 4 for a portable recorder, which is feeding 48v phantom power to a condenser microphone or occasionally to two as well as its onboard condensers that I usually have going as a backup. On a long day I'd expect to run down two sets of batteries. It's not very efficient as I often just leave stuff switched on when it could be off, but then you'll usddenly be ready to shoot at short notice and you don't want to be the person holding everything up while you switch 5 different devices back on.
Was that puzzle from the website?

No, my friend and I made that one. It can be solved without guessing, but it takes another heuristic beyond the three or so that people usually use. We also have ones that require guessing (can't be solved with any reasonable heuristics as far as we know.)

I learned clingo to solve puzzles and business scheduling problems. Check out my web site http://www.takingthefun.com for other games and puzzles I've solved with it.
Photoluminescent signage
You don't die without them, Books are not essential for Live.
They are not really essential for learning development either, but an essential factor in the development of culture since the invention of the book-press.

Consider the intrinsic value to be much higher than the production cost of books, so much that free information can be guarantied by law, where books should be equal to internet access, a telephone and if you will a TV; or the socially direct communication through people. Books as medium are inseparable from the speech and should therefore remain free speech and not seizable, whether essential or merely sufficient. This is partly guaranteed through public libraries, but the capacity is limited, compared to a distributed model.

tl;dr: didn't read the link :/
So what exactly happened here (with the "ARCA monster")? I'm not familiar with ARCA. Did the author essentially not understand how to use his trading software so as not to place unlimited orders?
Well for every ipod there are thousands of products that fail. Anyways, nobody is saying that it will not be big. Just that this is not super-ground breaking technology that it is going to create its own market. Virtual reality has, of course, a large number of possible uses. Who knows what will work and what won't. But I do not see myself using a search engine on it or surfing the web or checking my email. Browsers would be great, don't get me wrong, but it's very likely that what we will do on the VR browsers will be a small selection of what we do online. Virtual reality stores may become big and creating 3d versions of products would be a whole new thing but most of these things may be more app-based or will be shared.
Cookies are handled by Chromium, I suppose?

Or are they completely ignored?
I used to be a smoker. I was at about a pack and a half a day, inhaling deeply. Smoke first thing after waking up in the morning, agony on international flights, that sort of thing. Very addicted, a couple failed quit attempts.

I switched my addiction to nicotine lozenges, and now prefer them to cigarettes. I don't really like cigarettes anymore, never crave them, and the couple of times i've tried smoking one in the last few years have just confirmed that.

When I run out I feel pretty bad and eventually go get more. I would say i'm now very addicted to the lozenges.

How would you interpret my story? I'll read the links but it sounds like you've already done your homework.
A rump kernel is not an OS and it's not restricted to running in usermode.

see:
http://wiki.rumpkernel.org/Info%3A-Comparison-of-rump-kernel...
To a halt? Surely people will keep writing regardless and somebody will want to read it.
Does this only affect certain drives? I upgraded my mac mini with an aftermarket SSD in it and it appears to work fine
BTW, nytimes.com is TLS 1.3 intolerant.
https://www.ssllabs.com/ssltest/analyze.html?d=nytimes.com&s...
I'm not sure. There might be something on PistonDevelopers: https://github.com/PistonDevelopers/

Bear in mind, the Rust library ecosystem is still pretty young, so you might have to write your own. Some could say that's a problem, but to me it's exciting. If you build a strong, foundational library you have the chance to make a much bigger impact in the long run than if you invest your time in an old, established language like C++.
That looks absolutely amazing! The large wheel makes it a lot more usable imo.

But what's plan b when something goes wrong? On the electric skateboards you can at least break in the good old fashion way.
> My favorite story to relay is an Indian woman whose husband came to the U.S. on an H1B visa. She came here on an unskilled visa. In her spare time at home while she was working as a maid, she taught herself programming. A year later she was making $60,000 per year. A few years later, making $80,000 per year.

As a counterpoint, have you thought that it might not be the "ability to code," but rather the "drive to learn" that causes these people to be successful? I think that even if everyone could code, they wouldn't necessarily be successful, whereas someone who had that drive to go out, learn, expose themselves to new ideas, etc. presumably also has the drive to sell themselves and keep pushing.
While I can't speak for anyone else, the intent is that people would follow the "Getting started" tutorial linked from the front page of http://rumpkernel.org/ :
http://wiki.rumpkernel.org/Tutorial:-Getting-started

If that is lacking, please let us know!
My first code was an ICT solution for a social enterprise (NGO). I was 18 , a freshman and wrote the application in Rails. I'm 20 now :)
Until then, it is you who looks ridiculous. Can you provide any science?
I'm doing HPC work for a few years now and I'm familiar with FP concepts, use it (albeit never purely so far) in non performance critical code where maintainability and testability is more important. My question: How could it even work in performance critical domains? Most of the time memory bandwidth is the limiting factor, thus copying memory and cleaning up unused memory are very expensive. With pure FP, all I can do is hope the compiler won't create all the copies I'm instructing it to do and optimize it back to procedural in-place update. When that doesn't work all I can do is reimplement it procedurally. How does anyone think that this programming concept can be applied for high performance domains? What am I missing?
Please do get involved! If you're learning OCaml, then http://realworldocaml.org is a great resource. When you start trying out Mirage, join the mailing list and let us know how you get on. Finally, to see where we can take this tech, have a look at http://nymote.org
It loads fine for me with Javascript completely disabled.
Not yet, but similar fundamental scientific research has led to the inventions of extremely beneficial technologies like TV, GPS, CAT scans and nuclear energy.

All of these technologies based directly on fundamental research came years or decades after the discoveries. Science is often a game of patience.