skysight-inc/HackerNews huggingface dataset:
For performing a quantum algorithm two sets of gates are needed, for instance single qubit rotations and a square root of swap gate. A hadamard gate is another example of a universal gate. Starting up your quantum computer, you will find it in its ground state, that is the state where all qubits are in their lowest energy state. From there you start to apply q gates to the qubits. These gates make the Hamiltonian of the system evolve in time. Depending on THE sequence of gate operations on qubits, you evolve from one state to the other, performing a certain algorithm. Read out of the final state depends on the implementation of the qubit. For atoms and diamond nv centers you can use a laser. For electron spins you can use a charge detector, for flux qubits you measure a magnetic field.
Do you ever have any issues with leagues about using their data? I figured something like this would be a good idea, to format stats etc, but thought I might get in trouble for using "their" stats inappropriately or whatever.
You might be right, although author responds that concern with considerable detail here:

But let’s step back here. I am using the word in its
everyday, loosely overloaded sense. As in, you telling
your friend, “you are such a !@##$ sociopath.” I want to
stick to the term for two good reasons. One: Hugh
Macleod’s original cartoon which inspired this series is
too good to give up. Second, distrust of communities and
groups, and a stubborn individualism, are the main
personality characteristics here (and this position is
not original to me; it is derived from William Whyte).
Words like “player” or “enlightened” (two suggested
alternatives) don’t cut it.

http://www.ribbonfarm.com/2009/11/21/morality-compassion-and...
Succeeding With A Potential Single Point Of Failure
Same, but for ALL public transportation. The number of iphone apps/sms notifications that would pop up from it would be astounding.
that cornet is the exception, and helps illustrate my point - it's about a new instrument being immediately playable, and older ones needing to be 'learnt'.

> It's also been well tested that string instruments don't appear to get better with age :) at least not subjectively to expert ears (in various double blind tests).

which is why my original post says 'apparently'. They get better in terms of antique value, and some differences will happen to the instrument over time - which may make it better, and may make it worse. the antique value is something that really p's me off - the sound quality seems to have no impact on price, while antique value has loads.

Where are these tests anyway?

blind tests are always a bit of a waste of time - you get a player to play 5 different instruments - the one that most closely matches the playing 'profile' of their normal instrument is the one that wins... (assuming they use their normal bow, and set of strings, and that the sound post is set up correctly for their playing...)
Wouldn't it be both simpler and more accurate to simply have the control group of played and unplayed violins, and then hand them to a number of highly skilled violin players (who haven't been playing these instruments) and see if they can identify which have been played and which haven't by playing them? (If you're worried there might be tells on the instruments themselves, do the same experiment and see if the violin players can tell the difference without playing them.)
by detuning do you mean in terms or pitch or in terms of something else? any player normally tunes the instrument's pitch before playing, so this won't make a difference in terms of sleeping.
"If you don't want to run out of ideas, the best thing to do is not to execute."
There is a cool site, "CollabFinder" just for this purpose. http://collabfinder.com. Like all social sites, it will get better the more of us that use it :D
It's seven+ items in your head that people have trouble with. if they are presented on screen that statistic simply doesnt apply.
See http://en.wikipedia.org/wiki/The_Magical_Number_Seven,_Plus_...
If it means anything, I've worked with the OP and he is a very kind, cooperative and fun person to work alongside. You come off just as judgmental as you're making him out to be.
Kinda off-topic, but related:

Did you ever notice that Seth Godin posts drive HN commenters nuts? Keep an eye on every Seth Godin thought that gets on HN.

It's an odd paradox. If this is the case, then why does every thought make front page?

Now, I know if you threaten (negatively or positively) someone's beliefs or behaviors it is good for business (e.g. get people talking), and that may be why it makes front page every time.

My last question is, don't you ever wonder why he doesn't allow comments on his thoughts? Maybe he has addressed this before. Is it because he doesn't want any negativity about his writing, or is it to get on sites like HN to spread his message?
Using Shareaholic with NoScript Firefox Add-on | Shareaholic Blog
Hi Nick, a programmer I work with fwd'd your post to me, so I guess I'm not a jerk to work with. I do know what you mean. Some people just suck. I tend to love programmers I work with. I think they're magicians, but I think I am sometimes, too. I really enjoy the collaboration with programmers.

There are designers who focus on _design_ and don't realize that communication skills are the most vital design skill one can possess. It's important because if someone is agitated it is usually a result of misunderstanding, because it's work not personal, and true understanding is the only way to produce effective work. I find it very frustrating communicating with project managers and I'd like to get inside their heads so I could grasp why they won't allow things that will produce effective work. I'm sure it's something about my communication. This is something I hope to improve on. What are they thinking?!

I will drop you an email, even though you've found someone. You never know... :) Jen
No one ever really solved that problem with CDs.

Or, rather, the problem was solved by inventing online music distribution. If I want to sample a CD I look for it online. It is just so much better than a listening station in a store. (I don't think I ever used one of those, even when I used to go into music stores.)
A better way to put it is I've heard both sides of the story; and one strikes me as more logical :)

I'm sure there are lots of links to habit, the "feeling" of the instrument and some affects of ageing. But I don't see a lot of scientific evidence to show a real change in the instrument.

I dont consider that a bad thing: who cares if it s physical or psychological - it's all part of being a great musician and people enjoying it! Every subject has it's mythology.
A few things I’d like to see local news sites publish
The challenge that Android faces is that multiple versions of software/hardware are available to purchase at the same time. While Apple only has one version of the iPhone in stores.

I hope Android succeeds to keep Apple innovating and honest.
Most professional brass players I know personally try and hang onto an instrument for a decade or more. I know people in multiple major orchestras, and they all have instruments they love and won't part with, rather than cycling through hardware often.
OpenBSD to store private data, and FreeBSD to scale; everything else is for failures

Considering that attitude of closeminded zealotism, you are probably the problem.

The title of this post screams 'most designers suck'. You seem like the kind of guy that gives others the feeling that he expect them to be mindreaders and that scorns those that don't grasp what he means fast enough. That doesn't work with most of the lesser gods, who are nonetheless still way above average. It makes them feel bad about themselves and about you.

I get the exact same impression as Chris_G: there is a communication problem that you can solve. According to kyro, you are wonderful to work with. Let me say this: I've got a colleague that I love to work with. I'll be indebted forever to him, for making me a much better software engineer than I would ever have been without someone like him to teach me. Nevertheless, he has a corrosive personality. It is only because I acknowledge his superiority and have come to understand that he doesn't mean it in a bad way, that I can get along with him. However, most people will not get to that conclusion, either because they have less much interaction with him or because he simply isn't superior to them in their field. With them, he doesn't communicate in a constructive fashion. If you criticise something, it doesn't matter whether you are right: it matters whether you can convince the other party; whether you can explain that you are right, without making them feel wrong.
Agreed. It sounds a bit like the rhetoric that emerges whenever a group of people who see themselves as "naturally" dominating another group become threatened by that group. For instance, a great deal of "scientific" evidence for the subjugation of blacks developed thoughout Europe after the Haitian revolution in the 18th century. The more those dominated show themselves to be equals, the more necessary talk like this becomes for the masters to reassure themselves that their place is justified.
In most browsers yes. Some, and specifically IE6, this works only for the first letter of the option, not cumulatively. E.g. typing 'd' then 'e' leaves the dropdown focused on the first option starting with 'e', rather than 'de'.
Tri Tronics Collar Works for All Types of Hunting Dogs
In fairness the opening line does scream "set in ways" to a degree that would put me off a little.

Not to be judgemental but I wonder if people that do work for Zarathu for the first time might have trouble communicating if this is his usual style. And as a result dont get chance to build a working relationship. It happens a lot.

I personally like direct people but plenty don't :D
No! I realize that I sounded like a bit of a dick in my post, but that's just how I write. Let me elaborate.

I've contracted a designer before (an HNer, mind you) that literally told me that he was working on the design for about 3 weeks, without showing me any form of progress whatsoever. On the last day we were working together, he said, "I've been busy, and I haven't had time to work on it. Find another designer." He had been jerking me around the entire time without doing an hour of the work, and later admit it.

This has happened on more than one occasion. He had a brilliant portfolio.

The ones that are difficult aren't difficult because they give me opinions; in fact, that's what helps to make a great designer. I like creative people that come up with their own ideas.
Can you elaborate?

I've been building a little side thing called snailpad (http://www.snailpad.com) and have a beta API running for some of the paying customers at this point.
Development Journal for Price of Persia
Agree, seven is a pretty small and arbitrary limit for a drop-down. I think maybe 20 or 25 is a better limit, and certainly not so many that they won't fit on a typical 1024x768 display (less if you're supporting small/mobile device displays explicitly).
Ask HN: Where does one start to learn how to code?
Resources? tips?
There's something vaguely saddening about the fact that the "you suck" post has twice as many upvotes as the highest-rated post actually answering the question.
Interesting that this was not mentioned yet: http://haystack.com/
If you subscribe to his philosophy, it's pretty clear that it's to get people to spread his message, although I don't think he explicitly says so.
Darren has a great last name, too.
Definitely a good point, but now that song's going to be stuck in my head...lol.
@scobleizer vs Philip Seymour Hoffman: Long lost twins?
Trading with historical data isn't accurate enough. It doesn't account for the way your trades would have influenced the market.
Ah.. That may be true, but all we have to go on are little letters in cyberspace.

It's good to know he's different in real life, though.
My opening line was satirical. I hate text editor arguments, and the Rails v. Django thing is really old, too. I've used both Ruby and Python, vim and TextMate, and they're all great. You just need to use the right tool for the job.
For architecture I found 'A History of Architecture' by Bannister Fletcher to be a good start, but my copy is very old (1943 edition) - so try elsewhere if you want to include modernism from the outset. I'm told it's a classic.
Hibernate is horrible. But, object datastores aren't an option most often.

There are a lot of things wrong with SQL. For example, it's hard to do non-trivial queries because you can't say A = SELECT something FROM foo; SELECT another FROM bar WHERE field IN A.
Of course, you can make a view, but views are database structure, and you really really really don't want to change database structure in runtime.
So SQL sucks in some places.

In object-oriented programs they have no use of your "tuples". They just can't do anything useful of them, nor give them away (because that would violate code separation). So they have to turn your tuples into some objects (or other objects). Therefore, ORMs.
Heh, I apologise :) I read the whole thing as one rant.

checked

EDIT: I do sympathise, finding really good people to contract work to is an absolute pain.
Flashing "You're the 1,000,000 visitor to this site!" and fake "You have 1 message waiting" 468x60 banner ads pay more than $.16 CPM. Many of these ads appear on low-quality sites where the visitor spends less than a minute on.

Meanwhile, the typical song is longer than 3 minutes. The user also must actively find the artist and seek out the song (rather than say mindlessly clicking a link from Digg because they're bored.)

Comparing a pageview to a song play is not a good analogy.

On a side note, I'm starting to get tired of all the anti-media view on YC. Group-think is very dangerous. There are a lot of insightful comments here but I make myself take everything with a grain of salt because of the social dynamics of the community.

The article mentions that the top artist was Lady Gaga. Why didn't Lady Gaga start self-publishing on Lulu.com? She would have been able to keep ALL her CD and concert revenue. Information wants to be free!

Contrary to the popular belief here, record companies DO add value. Gaga signed with Def Jam at the age of 19 after L.A. Reid heard her (who is responsible for building the careers of Mariah Carey, TLC, OutKast amongst others). She cut her teeth on writing and producing music for established artists before going out on her own.
From the list of Don'ts from the LinkedIn user agreement: "upload a cartoon, symbol, drawing or any content other than a photograph of yourself in your profile photo;"

Seems like you violated that... Sure there is an argument about whether or not this is a valid User Agreement, but you did agree to it by registering at their site.
Ah.. That may be true, but all we have to go on are little letters in cyberspace.

We may as well make sure that we're on shaky footing, then, so long as we're rushing to judgements about people we've never met. Seems like a constructive way to start a conversation.

Edit: Really, the sensible thing to do would be to answer the question, rather than rant about how our internal Internet-psychologist has provided us with shining insight into someone who is potentially on another continent.

Edit edit: Not that any of this is really directed toward you; I'm just ranting myself. :P
Anytime I have a feeling I will be discussing sensitive materials with someone, I start signing my messages so they know I am good to go. If they don't know what it is, I take the opportunity to introduce security.
Did anyone else do a double take on "Sony BMG bought 5.8% of Spotify for 2,935 Euros"? What else did they receive from Sony BMG?
This sounds like a way to essentially accomplish multiple inheritance without having to deal with the problems caused by actually using multiple inheritance. Mixins (in languages that have them) would seem to do much the same thing as well.

Seems like a really good idea in this context; I will definitely keep this in mind whenever I'm faced with a huge, hairy, blobby object hierarchy.
The upstream documentation doesn't tell you how to solve the error I talked about, it doesn't provide a script to start and stop it at will, and above all it doesn't present the whole installation process in a nice, concise page.

Yeah, it doesn't "invent" anything new, but it's doesn't have to and it's far from being spam. Many people found my article useful and even the authors of Passenger thought this was well done.

The objective of blogging is sharing knowledge. I had these notes on a wiki of mine as I recently setup a couple of servers, so I thought I'd share them.
That's essentially what I said, just the bias is swapped.
Spotify certainly sounds like a good deal for users and The Labels, but not much for the Artist(s).

let's keep in mind that Spotify is still Europe-only for now, But...

If someone with as much world-wide fame as Lady Gaga could get this much for a million plays, then what about the less known artist(s)?

And who actually gets to see and keep this $167?...RIAA bosses, Label Bosses, or Lady Gaga

Great post BTW!
Since nobody has mention it yet, one could always submit a project as a design competition at 99designs.com. Though, at design school, we were advised never to enter competitions as it undermines the design process and devalues the designer ... a view I tend to agree with.
guestlistapp looks like a really great app. Both design and usability. Well done.
Draw a triangle.

On each corner, write:

> Quality Work
> Timely Delivery
> Economical Price

You're ONLY ever allowed to choose TWO.

> If you want quality work produced in a
timely fashion, then expect to pay top-dollar.

> If you want work turned around fast and don't
have any money to spend, expect the quality to be crap.

> If you want quality work and don't have a big budget,
expect it to be attended to whenever the the
service provider has some free time.

It is a maxim of business that you will never escape.

This is true of any profession, and is especially true of both programmers and designers alike.

If you are paying proper compensation, you should never have a problem getting quality work, by a designer that makes delivery of your goods a priority. Perhaps you found a bad apple, and that is unfortunate. If so, then the market should weed them out in time. But you say the designer did great work, and it sounds like they had plenty of good-paying projects elsewhere and you simply got back-burnered (and they were not candid with you, as they should have been). I've seen it happen a dozen times is every line of work.

----------

I forgive you for how you came across in your initial post. I'm also told that I'm a friendly fellow who sometimes comes across as... blunt, in writing.
They're smaller than regular keyboards, and the rate of input is much faster.

That is demonstrably false [1].

[1] http://www.cc.gatech.edu/fac/Thad.Starner/030_research.htm
Parenting in the age of Paranoia: A Small Manifesto
Having had some experience with working with Nick Kezhaya in the past, I can attest he's as caustic and annoying as his writing reads.

Decent code/server monkey, but we quickly hid him in the back room after he hurled racial epithets at a potential business partner who happened to be Jewish.
Yeah, my brain is hardwired by everyone else's signups to bounce on screens like that. Maybe it can be made clearer that there's no big signup required? Even picking a password is friction.
This is a myth that just won't die:
http://en.wikipedia.org/wiki/The_Magical_Number_Seven,_Plus_...

And why it doesn't apply to UI's:
http://www.ddj.com/184412300
My wife (a good but amateur violinist) hasn't noticed or heard of this before, but says that her fingers get sleepy if she doesn't play for a few months, and that could explain it too.
Sushant, you'll probably find that posts like this are more suited to Reddit than to Hacker News. This post will collect some upvotes, but then several more people besides me will flag it, and it will die. The post is humorous, but not in any intellectually interesting way.

A good acid test for what makes a good HN post is, "would this post start a conversation that someone would actually learn something useful from".
That's like saying that we should all share capital. Data is the new capital, and businesses will live and die by how they manage their data and extract value from it.
I'm reminded of a talk Chris Wanstrath gave where he said:

"Would you pay $100 an hour for an untrained accountant? Because if your consulting rate is $100 an hour and you do your own accounting, that's exactly what's happening."
https://gist.github.com/0a2655aed6a26fa15a02

So I guess the relevant questions are:

1. How much is your time worth?

2. How much are you willing to pay for an untrained sysadmin?
This can also help performance -- you get much better cache coherency by putting the components in arrays (an array of bounding boxes, an array of geometry...), and then you can do all sorts of cool data transformation tricks on these arrays (build a tree across it, or a sorted list of pointers, convert to a different coordinate space...) without all the OO overhead (which you still get when you need/want it...) But underneath all that, you still have a tightly packed array of data.
luck (exceptional skill?) is a valid road to success
Ask HN: what hosted blogging solution would you recomend?
I'm thinking of using http://blogger.com or http://posterous.com/ what else is out there? What would you recommend?

I'm looking for a hosted solution with basic functionality.
From the title, i thought they found something, but a skeptical first read indicates they just got it working again apparently, but haven't found anything. The success is, they unbroke it.
1 Pick an Interesting Language
2 Learn the Syntax
3 Pick a Problem
4 Solve the Problem
5 Goto 3 if Done
6 Goto 1 after 1--2 Years

As for problems, http://rubyquiz.com/ and http://programmingpraxis.com/ are good starting resources.

To learn the syntax of a language, just search for the language and the word "tutorial". Pick a site and read through the material provided.

If you can't decide on a language, try:

http://www.ruby-doc.org/docs/ProgrammingRuby/

http://mislav.uniqpath.com/poignant-guide/
As much as I would like to not put this so bluntly--that's the free market for you.

"Simply making music" is fine, but that has never exactly put food on the table. The internet isn't destroying the value of music itself, its just altering the industry's viable business model. This is the same line of thinking that we are constantly applying to web apps here on HN. Sure you can make a neat little functional application, and it will take you time and effort to do so, but that doesn't just automatically mean it should pay the bills for you.
> it's a cute little legal hack to create a self-contained domain that simulates a world without copyright

I think even that isn't the end in and of itself. The ultimate goal of GPL is freedom. In a totally copyright-free world one could make GPL code derivatives restricted by hardware that only runs signed binaries (tivoization).