skysight-inc/HackerNews huggingface dataset:
I don't think the Khan Academy videos have ever really aspired to be the most pedagogically nuanced videos anyways. It's not necessarily a huge problem for those who are quick learners and have others around them (at home or school) who will correct the inevitable errors (like the one pointed out by the OP). It may become more of a problem for those who are entirely dependent on Khan Academy (or similar online sources) for all of their education, which is not who it was intended for, and there can't be too many who are in that position.

A number of educators do take issue with Khan, but no one else seems to have put the effort in to supplant him rather than simply criticise.
Someone good enough to execute a two stage startup on purpose (Bezos, Musk) are not relying on luck as compared to the rest of SV startup lottery.

I think many of the young and arrogant "kid CEOs" would be better off in the long run by overcoming their ego, go and hustle the smartest mature CEO they can find into hiring them. Defer taking your own risks until you are actually in control of them.
Julian Assange announces WikiLeaks Party's federal election candidates
The dramatic tone of this article seems disproportionate to its complaint.

I can't help but feel that the author has a grudge against Sal Khan which motivates his writing as much as his disapproval of Khan's teaching strategy.
Congress doesn't have to look at it, enough voters have to look at it.

This is what political parties and eeeevil special interest groups that are powerful through the votes they influence do. In the case I'm most familiar with, the NRA's political lobbying arm (and eeeevil 501(c)(4)) grades politicians, and will send out alerts for the more important elections (as well as actions on bills). Many former politicians who were send back home to spend more time with their families in part due to NRA and general gun owner action can attest to the effectiveness of this.

The same could happen in this area, the first vote on it was extremely encouraging.
One, I don't think it's the HN law that all threads should follow in some precise linearity: there's such a thing as free-form debate. Two, my comment did have something to do with your comment. Three, you very often reply like this -- "did you read what I said?" -- not that it matters much to me personally, but can you please start making an effort of at least trying to communicate such things in a little more civilized manner? The tone of such comments is often toxic and inflammatory.
I thanked Sal Khan and even donated to this man, He has made my life easier in college.
>There's no reason to invoke No True Scotsman here

Where do I do that?

>There are valid justifications for both

I didn't mean to imply that there wasn't.

It's just the smug business-only outlook from some developers I find weird.
Thanks for that link to "how to disagree" - one I hadn't read.
My name is on this talk, but you should know: not only did I not go to Black Hat to help deliver the talk, but I did zero work on its preparation; this is Javed Samuel and Tom Ritter's talk all the way.

How my name came to be on it is a long, boring story.
It didn't make the cut for the first alpha, but it is still slated for inclusion in 3.4. The release schedule, including other candidate features, is at http://www.python.org/dev/peps/pep-0429/
From OP's comment-- "While perhaps “useless” is too strong a claim, I stand by the need for a strong claim here. Khan Academy offers nothing beyond place naming in its decimal videos. That is unacceptable for a primary instructional resource, and I cannot imagine how it could be helpful as a supplementary resource for a student struggling with decimal concepts."

I'm confused. I have never been under the impression that KA was replacing the educational system, but rather, to supplement it and help those that may not understand principles in a different ways, and more broadly, affect some change in an industry that needs it. The tone of the letter kinda sucks, and while its a criticism I can't help but point out that this service is free and has empowered so many-- is the intent to be a one stop shop for everyone to learn? Sure that would be sweet, but come on. All I get from the post is -- 'hey sal, can you create an open dialog to discuss the most effective ways to teach'. What a strange way to do it.
Ask HN: How can I choose a fulfilling career?
I'm currently a high school senior about to apply to colleges, but how can I even know what will make me happy? It feels like I have to make a huge decision without knowing anything.
I've found that most people who shoot their peers with guns, don't actually own the gun.
Of course it does. State protected businesses always do.
I noticed this the other day. It's pretty exciting!
I 100% agree with with the sentiment behind this rally, but I often feel that rallies like this in San Francisco are preaching to the choir. They make the participants and observers feel better, but do little to effect real change.
Why Deeming bitcoin illegal in Thailand will turn it into a bitcoin black market
It's my understanding (again, I endorse this talk but had nothing to do with its preparation) that they addressed this on stage, just for whatever it's worth.
It's a valid criticism. His videos are boring, but they're still some of the clearest instruction I've found, especially on math. I just have trouble staying awake through them.
>Open Source does not lead to a strong business.

This is what they want you to believe.
Again, it's not about either-or - unless one activity prevents you from participating in another activity.

We need to take all bullets we can get and fire them in parallel (online and in meatspace).

> They make the participants and observers feel better

To some extent, this is good b/c it helps everybody to understand they're not "the only one around here who...".
Yeah, no problem! It's one of my favorites.
As Khan Academy makes lessons for younger students, I believe the argumentation will get more passionate like this article. Students increasingly learn to teach themselves as they get older, so I believe the media will let Khan "get away" with more perceived "flaws" in his Algebra and Calculus lessons than on something for younger children.
That's good. Perhaps the users are not as biased as the mods, or the commenters as much as the voters.

By the way, for that Rails development question, you can set up a Linux VM with file sharing and SSH access from the host Windows machine. Then you can develop with Linux but as if you were in Windows, opening and editing files in Windows and using a Windows SSH client. Instead of using localhost to view your site in the browser, just use the local IP address of your VM. See this post: http://www.chetane.com/2012/09/11/hybrid-windows-linux-vm-ra...

And once you know what you are doing, you can even set up a lightweight headless Linux VM that will take hardly any power or CPU, just unobtrusively running in the background.
Is this an anti-endorsement of the talk, then, or are you just trying to give credit where it's due? I thought it was pretty interesting, and I'm going to try to move to ECC over RSA where possible (for private SSL certs internally, SSH keys, etc). I know that isn't quite the point, but it seems like it might help future-proof a bit.
14 August 2007: Startup News Becomes Hacker News

http://ycombinator.com/hackernews.html
That's a weird way to put it, because Joux and Barbalescu's DLP work has already threatened some real (but exotic) cryptosystems (haven't they?).
I'm so scared to post anything that's too far from the mainstream because I don't want my 2nd account to just get destroyed. It's actually an account I want people to be able to find when Google-searching me. I end up making throwaway accts to post opinions that I highly suspect won't be popular on HN. I think the fact that downvotng can get an account marked dead is a bad design. A comment getting flagged by a bunch of people should cause dead status after manual review, but just because I post something that HN doesn't agree with, shouldn't ghostban me.

Especially considering HN isn't the most diverse community on the interwebz and someone might have a different view if they're not a financially-stable heterosexual American white male...
I endorse the talk wholeheartedly but for reasons even I don't understand my name is first on the title slide and I don't want to claim any undue credit.
I like the part about how nobody is great.
Hi, Ben from Khan Academy here. I just woke up and don't have time for a full response right now but here are a few quick words.

Most of our math content creation work these days is driven by our push to cover the new Common Core math standards, which have recently been adopted by 45 states. We're following these standards not only because of their recent popularity but because they are among the best standards we've seen, primarily because of their focus on conceptual understanding. In the last few months, we’ve hired many experienced content creators to work with us on covering all of the the Common Core standards accurately. So far, they’ve created thousands of new handwritten questions that focus more on conceptual understanding to complement the machine-generated exercises we already have.

https://www.khanacademy.org/about/our-content-specialists

All of these questions are going into new exercises, and we're also updating existing exercises when it makes sense. Our new exercises are much more interesting than our old ones; here's one example of an exercise by one of our content creators who joined us full-time this week:

https://www.khanacademy.org/math/trigonometry/functions_and_...

The blog post discusses a few ways in which our decimals content can be improved, all of which are reasonable. Our recent push to improve our math content hasn't yet touched the decimals exercises but it will soon, and we've made a note to make sure that these specific criticisms are addressed, as well as anything else we find.

Most of our content creators have direct teaching experience and we also have multiple people review each new exercise before it's posted, to make sure that it's correct and that it tries to teach students well. In addition to the teachers' own experience, the Common Core progression documents (written by the authors of the standards) have been invaluable. Here's the progression document for the number system for grades K–5:

http://commoncoretools.me/wp-content/uploads/2011/04/ccss_pr...

You can see that on pages 8 and 12 they specifically discuss area models for understanding place value. We already show place values with area for integers; we'll add it to our decimals content soon.

We're making improvements like these on a daily basis, and we're always interested in finding ways to make this process better.

Edit:

One last thing I forgot to mention is our videos. With each new exercise, we're making complementary videos that explain the exact concepts the exercise covers, so our videos are also aligned to the Common Core standards and progressions (albeit indirectly). Even so, our greatest efforts have been spent in improving our exercises because the schools that we work with currently are more invested in our exercises than our videos, and we're looking to help them as much as we can.
he probably feels threatened
You're right, maybe they shouldn't do anything at all and just accept the status quo.

Comments like this just boil my blood. Get off your tail, stop being apathetic, be a part of the solution.
Linux Kernel 3.10 picked for long-term support
Yeah, it's disappointing when Germany has bigger turnout over PRISM than we do in the US. But we do have twice as many people RSVP'd this time. But there will always be hope, wherever you are, until you yourself abandon it.
Meteor-prelaunch: Email collection app written using Meteor.js
We don't know they do blackmail, either. What is this fearmongering bullshit? We also don't know unicorns don't exist, and these rocks I'm holding here will ward off tigers.
That's a weird conclusion to draw given that negotiated key agreement algorithms are what allows us to swap RSA for ECDSA opportunistically and without jettisoning the rest of the protocol.

Maybe this would make more sense if you could describe what was madness-making about cipher negotiation.
I disagree. The tide is turning in Congress. Since a majority of the media is incompetent, rallies are one way for the people to raise awareness. Maybe you have an idea for how we can help raise awareness?
most important thing is find something you love to do and major in it, don't contemplate while in college because picking the right major ahead of time means you know what classes you will need to take and it will make your time there easier and more efficient otherwise you will end up taking classes that aren't for your major if you decide to change majors half way.
So for us legit users of Tormail, will we ever get our mail back?
It is hoped that this rally will inspire others, and make more people aware of the issue and the opposition the people have to living in a surveillance state.

The effects of protests might not be immediately obvious, and perhaps might never be publicly acknowledged. However, they can have a serious impact.

Here's one important example:

"Many people don't know it, but Nixon was considering using nuclear weapons in Vietnam. At that time, Nixon was also repeatedly saying that he
didn't care what the American people thought about Vietnam, and that he was going to escalate the war anyway. However, according to a
biography by a well-known historian, when Nixon saw hundreds of thousands of protesters on TV, he dropped his secret plan of nuking Vietnam."[1]

[1] - http://www.opednews.com/Diary/Why-Nixon-Didn-t-Nuke-Viet-by-...
I do not speak English, what better way to ask in English?
Hello!

I'm from Brazil, and unfortunately I know very little about idiome English.
PS: I admit that it is a failure, "and that must be corrected," but it sure takes time.
Currently I have used the google translator to translate language text
English to Portuguese. I have achieved great results, but I want to participate
but my english sucks.

It is unethical, incorrect, rude, etc., use the google translator to
communicate with people of other languages???

There is some other way or another tool to ask questions
in other languages??? Not only pergunas but help in the responses, ie,
also contribute.
Someone could tell me some tips to help solve this problem?

Sorry for my bad English, I used google translator.

thank you
Junior
Most accidents require multiple simultaneous factors: bad weather, a tire blow out, a bad night's sleep, a crying baby in the back seat, a deer in the road. The driver of any one car has control of only a fraction of these. By operating at high speed, you add another factor and decrease your capacity to respond to the others. It increases the risk of an accident by at least an order of magnitude, if not more, and commensurately increases risk of death to the driver and to innocents. The whole thing reeks of douchebagerry.
Downvoting can't get your account marked dead.
Most of those accounts are a sockpuppet ring. They tend to all post at once, which means when they do the new page is mostly dead if you have showdead turned on.

I explained this in a comment about a week or two ago, the last time someone freaked about about banned accounts.

Next time someone wants to do that, would you please email us, as it says in the guidelines? That would have saved a lot of people a lot of time.
Call me crazy but I would have renamed Python3 to a new name, i.e. Snake. That would have made it crystal clear that it's not the same language.

Seriously, Python3 made me hate python.
A couple examples why:

- The fact that I was using Archlinux and they decided to make "default python" -> "python3" = Hours of wasted efforts figuring which scripts weren't working.

- Every time I tried to go with 3.x = Screwed because libraries I needed weren't ported

- print 'x' not working = Just plain annoying

Let's make a new python4 == python2.7 and forget about all this python3 bullshit.
No. It is opinion at best. _You_ think his videos are boring; I find them engaging but not precise enough.
I wish I had found out about this before today (I would have returned to Boston for it). I'm sure many people are in the same boat.
After the whistle: Revealers of government secrets shared
This "community" while having been around for awhile is controlled by an autocratic self promoter who uses it to sell his stuff, & longs to sell out the community to the fullest extent of his abilities. Note the content of the main real estate of the front page versus the wider interest of the broader community.

For the higher quality stuff & open source in good faith goods, google PX4 ETH native (not the Ardupilot version ), Openpilot, & Paparazzi.

J
I don't buy it. Obviously a Republican is not going to beat her in California, but someone with enough money and popular support could primary her.

And you don't even have to win -- just force her to stop being complacent and change her outrageous positions in order to mitigate the risk of losing.
For the most part, the concerns over breaking crypto are related to breaking public key cryptography. Becuase of its relative slowness, public key crypto is generally used for key exchange before the devices start using symetric cryptography. Symetric crypto has its own concerns because we have no theoretical foundation for believing it is secure other than the fact that we have yet to break it. At least RSA is backed by factoring, which we have spent much longer trying to break (and also haven't proven to be secure).
I wonder if this means RHEL7 will use 3.10.
That would be Popvox: https://www.popvox.com/
The idea maze
Yes. This is what we're doing here. Sharing our opinions. We rarely have the benefit of solid fact when criticizing things.
False dichotomy.

Rallies in San Francisco are just excuses for like minded people to circlejerk. Its a politically irrelevent city, because it has no votes in play. Want to have some actual impact, some actual chance to change hearts and minds, go protest in Utah, where you can connect the cause to the site, or DC, or heck Iowa, where you can take advantage of their natural libertarian streak and there are votes to be swayed.
I'm not sure I really catch your drift, but:

Using

{{name}} {{greeting}}

in Ember should have the same effect as

{{name + greeting}}

in your example, right?

You need not use computed properties in Ember, because updates on ordinary model fields are also updated in templates in real-time (AFAIK works very similar to KVO in Objective-C). Computed properties are just a ridiculously useful concept which allows you to modify/transform stuff before you show it to the user, similar to the view-model in MVVM. How would you show an empty string in Angular with "{{name + greeting}}" if name is empty?
GM’s plan to turn the car into a smartphone on wheels
lol you developers sound so entitled. "90 day free trials" hah, when its your product you may want to price it though i bet?
I agree with widdershins. One can use many tools each with their own merit but I'm not opposed to closed source by principle (it's their choice and sometimes their mistake). An open source version of Svbtle would be very easy to code, but the value lies in the design, workflow, feature elimination, etc
A thank you to Free Software would be welcome as well. Open Source does not mean much in itself.
I'm the article's author. I had a pretty long interview with GM developer chief Nick Pudar so not all of the details made it into the post. If anyone has any questions, I can try to answer them.
No, you don't get banned if you create an account over Tor. We autokill submissions from such IPs, but we resuscitate legit ones if we see them.
lol... people still think the Nobel goes to the righteous.... lets remember Obama got a nobel for sending troops to Irak.
Take the 2009 one back first, dudes.
10 years ago, one of the architects I worked with had an email message that stated "I'm on vacation, and when I return, I will delete all emails I receive during this time. If it's important, then please e-mail me when I return on X." And he meant it. He really did delete everything and didn't bother reading a single e-mail. If something really did need his attention, then people would be motivated to contact him, and if some decision was made without his input, then it didn't matter.

This is what happens when people get 200-300 emails a day, and I don't really know of a better way to deal with it, rather than going through thousands of emails when you return from a 2 week vacation.
I'm a huge fan of Github. I recognize the huge effect they've had, transforming the Open Source community, and I'm grateful for it. I also love how they run their company, how open and talkative they are about their organization. Their blog holds many gems.

However, I cannot work on Github. In my opinion, the Pull-Request mechanism is weak because it fails to address a major point: It's highly improbable that I accept the PR on the first try. There's going to be a lot of back and forth discussion, reviews, remarks, etc.

Standard PRs I deal with on Github usually end up with several redundant commits. When I ask people politely to rebase all the commits they're sending into one, most don't know how to do it. (It's okay not to know. It's weird when someone with several contributions per day never had to do it before). If I `git commit --amend`, my PR is actually overwritten and I lose the history of the first patch I've sent.

I started disliking working with Github ever since I started working on OpenStack. The process to send a patch there might seem a bit daunting at first, but it's really not that complicated. Using Gerrit (https://code.google.com/p/gerrit/) for code review has many advantage, like limiting your patch to one commit, keeping a detailed log history of successive patch sets, and generally making reviewing more inviting. On top of that, the whole suite of tests is ran against each submitted patch in a virtually never resting CI server.

And finally, I don't find Github's Pull Request that "easy, simple and fast". My workflow with OpenStack is a lot faster. 1 command:

$ git review

A colleague of mine says it a lot better than I do: http://julien.danjou.info/blog/2013/rant-about-github-pull-r...

If I recall correctly, Linus Torvalds went on a highly publicized rant against Github PRs not that long ago.

I'm not arguing that every Open Source project should have a complete QA infrastructure, and Github is a great place to deal with your first Pull Requests. However, I do argue that you can very quickly reach the limit of what Github can give to you in terms of collaborative tools.

My rule of thumb: If you have more than 10 contributors, at least 4 of which are active daily, it may be worth it to invest in some real infrastructure.
two words: stop funding

Simple as that. If Congress is truly serious about this, they should strip the NSA of its funding.
The advantage comes in for organization and simplicity of the code. I don't have to write any jQuery like for $("#item').html(). I just set a property on the model and it updates.
Should [most of the] rest of the world choose April 8th?