skysight-inc/HackerNews huggingface dataset:
Good point.

I've not seen flow batteries in existing vehicles. Electric vehicles use NiMH batteries (0.25 MJ/kg), lithium batteries (0.4 to 0.7 MJ/kg) or lead acid (0.14 MJ/kg fork trucks, but they need mass anyway).

Guessing at the numbers MIT is avoiding naming in that press release, they might get to something three times better than the current lithium batteries, but you also have to add in the mass of the pumps, and the reaction part of the battery.

It could "win", but it won't be a game changer.

Putting aside vehicles though, flow batteries have some interesting properties for utility scale energy storage. The rate at which you can store or retrieve energy is independent from the amount of energy you can store. The first is by the size of your reactor, the second is by the volume of your storage tanks. It is possible if they are using common enough elements for their fluid that they could be a good answer for peak load shifting or production storing.
Just as there's nothing that gives conspiracy theorists more reinforcement than a government crackdown.
When do most people tweet?
And another thing .. Buffers, which is partly down to V8's external indexed data, and node's wrapping of that in the Buffer classes which are then used by the various async. IO operations.

This means that content can flow through a node service with being touched by javascript, and without adding work to the garbage collector.
I'm confused as to why Samsung would want Nokia. Right now Samsung is making better phones than Nokia. Samsung has a whole supply chain, kickarse manufacturing abilities, and a corporate culture that would be difficult to integrate with Nokia's. What does Nokia have that Samsung would want, and that Samsung can't acquire for less than $28 billion?

Now, Microsoft buying Nokia I could understand, since it would give Microsoft a much-needed boost in the mobile phone wars. Not necessarily $28 billion's worth, though, that's more than half Microsoft's dragon-guarded treasure pile.
Startups need to stop saying which country they originate from
Can you resell it to a friend when you have no more use for it and they need it?
I cannot agree. There are so many "facts" that the mere selection of which ones get recorded already puts an overwhelming bias on the stories they tell. History is obsessed with narratives, and there is an ineluctable requirement, when doing history, to create a story where earlier "facts" leads to later "facts" in a hypothesis of cause and effect. The requirement for a pseudo-logical story with internal consistency further cherry-picks the "facts", until you're left with a complete bowdlerization of reality. The truth is, there are enough "facts" that you can very probably tell a whole lot of different stories using the raw material, but people have a very strong disinclination to cognitive dissonance and won't do this. They'll pick one and stick with it, and argue it against other stories in ego-driven battles, until a consensus emerges as a sociological phenomenon, rather than a fact-driven one.

One man's freedom fighter is another man's terrorist. Criminals often think they're justified in the actions they take; in fact, often they must self-justify their own actions in order to sleep at night at all, so they will have their own internally consistent narratives. It's extremely difficult to fight the dominant narrative once it has become accepted.

IMO, the highest value history has is in telling stories about a world which is different from our own, but for which we have somewhat believable evidence actually existed. The degrees to which it is different tell us what varies in human nature, and what stays the same, stays the same. It teaches us to not take the present moment too seriously as some kind of apex or nadir. But I don't think it actually tells us a whole lot about the past, per se.
Absolutely. But you can't teach calculus in 10 minutes. Pretending you can teach 40 years of 20th century history in 10 minutes is just silly, even if you are just giving an overview. At some point, the overview becomes meaningless and information free.
Where in the video is this?
The potential for ebooks to increase the distribution and reduce the cost of books, thereby increasing our freedom, never seems to be factored into this discussion. I wonder why?
Chase is similar. Username and password, and to login from a new device (web, iphone app, etc) requires putting in a time-sensitive code sent to your phone by SMS or email. An actual dedicated mobile app is somewhat a bad design since many people do not have smart phones and it makes it client dependent vs. account dependent.
I like that it preserves some normals but either way almost always there will be some overrides so staying with reset.
But from "fewer rights" it's a pretty big semantic leap to "attacking our freedom". Unless you're some kind of absolutist, which I understand Stallman to be.
Isn't that about the level where it gets interesting? My car can go something over 400 miles on a tank of gas right now. If their new batteries can get 40 miles on a "tank", and be refueled as easily as my car can now, that seems right on the threshold of being a very viable product.
Hey guys. I'm nearly done hacking up a simple tool that lets me easily stay on top of the social feeds of people I care about without having to filter through everyone else's updates. Basically, I've got aggregated Facebook, Twitter, and Tumblr feeds for 3 close friends sent to my inbox every week. Curious to know if this would be useful for anyone else. If there's interest, I'll iron out the minor bugs, make it look pretty, and release it as a public product.
Steve Jobs don't know how to program probably. Once I've watched a video of Steve Woz on youtube saying he(Jobs) didn't knew a shit about making computers(hardware), but he is very talent at being the CEO or something like that. So it's very unlikely that he knows how to program.

I know that microsoft employees, including Bill Gates have read some Knuth, I've read that in a book of Bill Gates.
I think it may be more like, you lost your key and the person finding it went to the bank. While there they presented ID, per the banks normal process, and even though the presented ID was suspicious the bank allowed the transaction to continue.
There's an app for that.™ http://ocarina.smule.com/
Reminds me a bit of IBM's TJ Watson center in NY.

Very cool, very futuristic. That is a place I'd like to be.
Importantly, they've said they have a few thousand people at 1IL currently and they're consolidating everyone together. That should benefit the communication and innovation having everyone under one roof able to get together and chat.

In short, I love it. More companies should be so bold.
"You can't trace it back to the origin, as long as it's been melted down."

Allow me to introduce you to the concept of Isotope Fingerprinting http://en.wikipedia.org/wiki/Isotope_fingerprinting

So even melting doesn't necessarily prevent tracing.
Wait, SlashDot is still around?
MinGW cross compiling environment – Release 2.21
The story of St. Columba: A modern copyright battle in sixth century Ireland
But.. they're email clients.

You know what your Inbox is? It’s inbound messages. Just like voice mail or snail mail or smoke signals.

And if I turn on an answering machine, or open a letterbox, I expect to see the inbound messages, not my todo list or calendar.
Exactly what I thought when I saw it.
I imagine the reason they were not known for restaurants and nightlife is that it was mostly offices and traders left at the end of the business day. As more people start living there, we're slowly getting more restaurants and bars.
Can you give more detail? The link is still up... What did they say?

edit reply via twitter: "they asked me to remove the dump due TOS" (http://twitter.com/#!/calufa/status/78556903772393474)

which I guess is what I expected.

But are scrapers subject to TOS?
> Effectiveness of Science Videos http://www.youtube.com/watch?v=eVtCO84MDj8

The biggest flaw in the "Effectiveness of Science" (EoS) video is that it criticizes khanacademy videos by showing that vastly inferior videos don't work. Khan videos are good because they make it easy to think: there are no distractions, just a blackboard and an intelligent voice "in your head" guiding you through the problem domain. In the EoS video, the failing videos try to teach physics by featuring the face of a talking girl with a guy juggling in the background. He might as well give his subjects a physics book and turn them loose in a sports bar to study while following NCAA basketball. Neither method is a good one for learning physics. What's sad is that the maker of the EoS video is not just some crank on the internet, but apparently a newly minted PhD in education who will likely end up teaching teachers or running a school system and it's obvious that despite his vast "education" this guy has no clue how to recognize good teaching.
A story from meeting Donald Knuth.
During the dotcom days, our startup team was sent to meet Donald Knuth for due diligence by some VC.
Our startup was doing Location based stuff before it was cool.
Our CTO went on and on about all the potential applications of location based services.
Prof. Knuth cut him off in the middle and said,
'You would use all these services because you are part of the lunatic fringe'. :)
Can you resell life insurance when you have no more use for it and they need it?
Lojban - The Logical Language
I don't mean to be overly harsh - I understand how it can be tough + draining sometimes.

I'm also not acting under any illusions here - there are times when it's miserable, the key is whether the overall thing itself outweighs those moments.

Also be cautious as to whether burn out is involved... that shit is pernicious.

:-)
If you want to resell it, then forgo the benefit of being able to carry hundred or thousands of books around in a tiny device and buy the dead trees. Large industries won't just change overnight, we saw that Apple needed to gain a foothold before they could remove the DRM form their music.

These changes need to be evolutionary, publishers need to be persuaded (or forced) to make this change, no one has the leverage for that today. I hate DRM as much as the next guy, but this is a stepping stone, it isn't "attackin" anything.

If your issue is with all digital distribution, I'm not sure I can help you.

edit: typo
window.alert is a poorly designed API. User interface code should not block the event loop. If this is an issue, simply avoid window.alert (and other functions in the family)
Custom printed hang tags used to communicate something special
Idsketch.com gives you a comprehensive solution in case of getting brilliant custom printed hang tags. We serve you all over the world. We know how to serve you better as we make your products matching to your requirements and latest trends.
Or what about a browser that you do not have to scroll sideways to read anything?

It amazes me that the current (iOS5 SDK Simulator) browser still is unable to do reflow of text.

At least it can open links in the background now. Thank god!
Eventbrite announces its new iPad app that will revolutionize ticket sales
So, if you bought a song and didn't pay to upgrade, it's not upgraded. This doesn't seem surprising to me. If you paid to upgrade and suddenly it'd DRMed again, that would be an issue. Which of these two is it?
The authors tout ranges of 300-500 Wh/L. http://www.greencarcongress.com/2011/05/ssfc-20110526.html
You also have to take into account that while gasoline has a high energy density, the efficiency of the motor cuts that significantly. Definitely a lot more development on this front, but interesting.
Apple doesn’t bring back DRM.

You bought a song.

You delete it.

Apple now allows you to download that same song (i.e. an identical file) again.

That’s all there is to this story. The respective agreements with the music labels probably prevent Apple from doing anything else.

How you could complain about that I don’t know. Could Apple have forced the music labels to make even more concessions? Maybe. Would such a detail have been worth it? Probably not.
I think technically it can be an independent module, launched as the last stage of a rocket. Which, of course, also forces constrains.
Seems more like an implementation detail than a "we're trying to sneak DRM back on you" thing.

If the users had paid the $0.30 to upgrade the track to DRM-free, they wouldn't be getting a DRM track. When they purchased the tracks for $0.99, they had DRM. Now new tracks generally go for $1.29 with no DRM. There is no way to skirt the $0.30 fee for a DRM free track. The $0.30 is the record labels' tax on everyone for the small percentage who share their music.
I would love to watch a video of Bill Joy or whomever giving a talk about that.
IMHO, neither. I have read it this way: Knuth thought that Jobs is insincere manipulator who tells people what they want to hear instead of just facts, and Knuth doesn't like that.
I don't think the iTunes Plus fee of $.30 to upgrade a DRM track to a DRM-free track is that unreasonable. I paid it when it was first offered and now I can re-download DRM-free versions without a problem. So from my perspective it would be unfair to me if people who didn't pay it could now download DRM-free tracks (short of Apple giving me a refund)

Regardless of how you feel about DRM the reality is anyone buying from iTunes back then knew what they were getting into (or should have known).
Insane Science: 5 New Books That Explain The Brain
For free, Apple now allows you to redownload exactly what you bought years ago an unlimited number of times (songs which, at the time you bought them, were only downloadable once) - and it's portrayed as Apple punishing people? This is stupid.
That is simply your opinion.

I don't think it trivializes war.
Nah, music generally costs $0.99 ($0.69 and $1.29 are also possible at the labels’ digression) but that’s really irrelevant.
Here's the numbers:

...we estimate that optimized SSFC systems using established lithium intercalation compounds could have energy densities of 300–500 Wh L−1 (specific energy 130–250 Wh kg−1), which would satisfy metrics considered necessary for widespread adoption of all-electric vehicles.[4] Further improvements would be possible by ‘dropping in’ higher-energy-density or lower-cost storage compounds in the SSFC platform as they are developed.

http://onlinelibrary.wiley.com/doi/10.1002/aenm.201100152/fu...

(linked from http://web.mit.edu/newsoffice/2011/flow-batteries-0606.html)

So 0.47-0.90 MJ/kg. Based on theoretical calculations -- they haven't actually engineered this.
"Who knows whether they will need the space, four years from now?"

I think Steve and Tim know they'll need it. I think the interesting thing is not whether they'll need it, it's not like Apple is in any danger of collapsing, but that it shows they don't anticipate needing more. This fits with what we know about Apple wanting to stay lean and mean but it also makes those plans concrete (lol?).
I don't think this is helpful. He can provide for his family with out a "9 to 5". He could contract remotely, for example. And he could work on side projects with an eye to the future, which would help keep his spirits up through this period.
I don't think the author understands what email is.

As someone has commented on the blog itself, it's not like your Telephone voicemail system is a task list!
spoiler: because they're not GTD apps.
I appreciated this, actually. It's funny how just being in a negative tree gets you downvoted by association--good thing it's just karma, eh?
Often in these sorts of articles, you can tell what the big problems are by the fact that they're not even mentioned. The big unmentioned problems here seem to be:

a) Cost

b) Cost

c) Safety, and

d) Cost

I'm not sure what materials they're making these things from, but would it be fair to guess that it's something exotic and hard to fabricate?
The PATH does the job though, and connects to the subway in a couple of places.
It really puts things in perspective when you have a monolithic, monocultural, centrally-planned country like China building all of these science-fiction scope projects like the massive Beijing Subway[1], and doing them in record time.

Seriously, are our troubles building things like the Big Dig really because of Unions, as Free Marketeers have laid blame? Or, is it because the Chinese government can plow through any problem because they're communists and not "inefficient democracy"? Or, is it because of their "monoculture" (I've always hated that argument; I mean, what does culture or cultural mix have to do with getting something built or accomplished?). Or, maybe it's the almighty dollar/yen/yuan (and lack thereof).

Whatever it is, it's really depressing.

[1] http://www.youtube.com/watch?v=NxMjjwwV9tQ
I'm guessing Music Match will use DRM too. How else would they have gotten the labels to agree to it?
For many, the principle purpose of money is a safety net. Once that is achieved (I dunno, ~5 million?) further accumulation is a side effect.
> People here are content with 9-5 jobs and staying home at night

I think you should not feel bad for being frustrated by this. It's a perfectly reasonable choice, but if you value a more active, diverse lifestyle, I think this is a value you should hold on to.

I've experienced that it's very hard to make friends in new places, and it's taken me a lot of time and patience, but I've managed it every place I've moved. Good luck on this!

To echo some of the other commenters, I think you might also ask yourself what responsibilities you really have to your family. I won't presume to guess the details of your situation, but I suspect that you may be able to scale back a lot - but not entirely - while still doing nearly as much good.
>The joke was that no one actually reads TAOCP.

While true, what surprised me is that Knuth's books are much more readable than you might expect from their reputation. TAOCP is a far cry from dry terse impenetrable tomes like Rudin.
Looking through it I don't see it as a replacement for reset except in a few cases. In particular, most of the stuff in there (great documentation, btw) seems to be oriented toward fixing strange browser quirks not covered by reset. For example, things like "Remove Android and iOS tap highlight color [from html-tag] to prevent entire container being highlighted..." Seems like a very natural add-on to reset to me.
I think you're missing the point. Sal Khan isn't trying to replace all traditional forms of learning. He's not saying that his methodology is perfect and should be the first options. So picking apart his practices based on idealistic principles is really irrelevant.

I think all this criticism just further reiterates how amazing Khan Academy is. Truth is that their will never be an educational system that everyone thinks is perfect. We are all too unique and absorb information in different ways. The fact that people are talking about Khan Academy at this global scale is amazing and only further amplifies it's importance, last time I checked open source education doesn't generate too much press. So instead of seeking perfection, which is unattainable, we should focus more on actually doing the littles things to make knowledge more widespread.

To that end Khan Academy has no comparable peers. Critics can talk all they want about learning theory and this and that, but fact is that Khan Academy is really helpful to a lot of people.

If you think you see a flaw in Sal's approach and can do better, than just do it and we'll see if people like it. You're into education theory, great. Keep reading and writing about education. Sal Khan is into doing, into helping people learn so that they can improve their own lives. Kindly get out of his way.
I was just in Stamford last weekend helping my gf find a place there. We both currently live in NYC right now.

First off, rents in Stamford are insane. Decent 1-bedrooms currently rent for over 2 grand (which is what I pay in Manhattan). Granted you get 200 more square feet and a parking spot, this is still a large increase over what rents were in Stamford in 07 (about 500 bucks cheaper). The real-estate agents we spoke to claimed that RBS and UBS were hiring like gangbusters and this was pulling rents higher.

Most of the high end apartments we say had a shuttle service to the Metro North station. It seems there are a lot of folks who live in Stamford and who commute to Manhattan.
Would it be any better if it was the result if their own labour rather than 'extracted from others'?

You are getting into an argument about how people should use the resources that they have been rewarded with. This is difficult, because reducing the rewards punish the responsible, and conditional rewards are difficult to implement if the sources of that reward are heterogeneous or disorganized, such as the consumers of mass-produced goods.

Not to say it can't be done, but it's not as simple as sprinkling magic social responsibility dust onto capitalism.
Which of the terms of a license agreement like this do you think a significant number of people would find sufficiently onerous to make them go try to find something Free to use instead?
Code review might serve the same purpose (depending on how you do it) but I've had a hard time getting organizations to "buy in" to code reviews for various reasons (fear, pride, cost, etc.).

On the other hand having the Architect act as editor after the code is written not only provides the "code review" function, but it provides the additional benefit of providing the Architect with feedback on the original design, and how the abstract design ideas are translated during the construction phase.

I think it would improve communication on both sides (Architect and programmer) as well as overall quality...very nice...
Do you have a kick ass product manager
Edit: I guess it was spelled out. See other reply.
Isn't the time and effort of the government better spent in legalizing the drug trade and earning revenue in the form of taxes rather than trying to fight a war that is obviously unwinnable?
I absolutely recommend it! It's great. Read it online from the link provided by the comment below or buy the book, what ever suits you best.

I also recommend to heavily use gitk while learning, just use it to see what happens after you do something in your test repositories. It's very enlightening.
All attempts to write about history is pushing someone's agenda.

I bear no illusions that history writing is agenda free. But the stories of the white where no less relevant or important, they just needed to be mixed with other perspectives.

And that is to me what history is. Perspective. There are no right or wrong perspectives. There are simply perspectives trying to describe to the best of their vantage point.
Match is DRM free. Read the slide: http://www.youtube.com/watch?v=zYANRyLubTs&t=2m25s

But here is an interesting question: Will that help you in any way? If iTunes Match only works on iOS devices, i.e. those low quality files you ripped or pirated ages ago stay on your PC and are not updated – the updated files are only pushed to all your devices running iOS – then those DRM free AAC files won’t do you much good. To my knowledge there is no non-jailbreak way of getting to the music files on your iOS device.
Thanks, and there sayeth Knuth: "The web has thousands of tales that aren't true, about virtually everybody in public life. (Including the story about me and Pixar's CEO.)"
In the video that is found at the cited link, Knuth doesn't clearly say there that the incident didn't happen.

He says that he gets asked about this story and he met both Jobs and Gates only a few times and that in each case he was more impressed by them than they were of him.

The story is definitely false because Knuth is a very polite and modest person who has never been the sort of person that says "you're full of shit" to anyone.

More conclusively, another person in this thread pointed to the letter from Knuth in his own handwriting in which he says the Jobs story is untrue:

http://markharrison.net/stackoverflow/knuth/knuth-page2-enla...