skysight-inc/HackerNews huggingface dataset:
I just love this story. It's inspiring to see what's possible, especially knowing this was done by enthusiasts in a non-professional setting (i.e. not their day job).

... and, of course, obligatory xkcd:

http://xkcd.com/1337/

http://blog.xkcd.com/2014/05/30/isee-3/
All of which is irrelevant because the only reason bikes were even mentioned was to give you a point of comparison for the rate of his ascension. Only the order of magnitude matters.

And, anyway, Wikipedia helpfully explains (http://en.wikipedia.org/wiki/Bicycle_performance) that the average urban bicycling speed in at least one city is 9.8 mph. Not that that matters in any way.
Maybe someone should write some browser plugins so desktop browsers can send fake X-UIDH headers to help poison the well, just a little.

Better still have the plugin get a group of known headers and distribute them all over.
In the context of this paper, we are talking about floating point arithmetic used by mathematicians working in Mathematica. I disagree with you on these points.

> you need to sort them first

Yes, but only if there are quite a lot of them and the partial sums are large relative to the result. Not really an issue usually.

> The inability to represent 0.1

Many mathematical conjectures apply for arbitrary real numbers. The nearest floating point number to 0.1 is a real number, and it's not really an issue for mathematics that it's not exactly 0.1.

> single-precision might not be enough

These are mathematicians working in Mathematica, which has an arbitrary-precision floating-point type. They don't have to come anywhere near single precision floats.

> if you are going to represent exchange prices

You can use integers. Floating-point arithmetic isn't really great here because it makes the wrong kinds of accuracy guarantees.

> prime number work

Primes numbers are all integers. It would be a bit silly to represent integers with floating-point numbers.
Doctors transplanted 'dead hearts' into three patients, and it worked
The Humanitarian OpenStreetMap Team is also building mapping communities there and give volunteers GPS devices and computer setups. http://hot.openstreetmap.org/updates/2014-09-14_fieldwork_in... so the maps can be updated regularly.

Even mapping a temporary tent town (refuge camp, Burning Man, Octoberfest) has value for planning
Please note you are supposed to do the 7 minute workout 2-3 times.
Innocent till proven guilty? The onus is on gamer gate proponents to show there has been a conflict of interest . . .
Ok, seriously... lens flares?
He says AI is the biggest existential threat we face. It's at about 1:07 I think. What's the problem?
Yes, you're definitely right.
Photo of such equipment http://hot.openstreetmap.org/about/hot-kits
I completely agree. I believe in Ship fast and move quick. Anybody can deliver in 6 years but you are a game changer if you can deliver in 6 months.

If Amazon followed iterative approach to fine tune rather than one shot with super delay then it would have been a different story.
I can't see how this makes Greenpeace look good and Amazon look bad. After reading this, Greenpeace looks like a bunch of ignorant thugs, and Amazon seems victimized. How could this possibly be more effective than a boycott?
Thank you for posting that. It was fantastically, brilliant.
I really would like to be able to see a proof of how Mathematica calculates a limit, for example. Doesn't need to be human friendly, just verifiable.
I was under the impression that the majority of products offered on Amazon is through third party sellers (who set the price) and Amazon is merely the fullfilment channel. However, I don't know the real split between the number of sold by Amazon vs. Fulfilled by Amazon products available.
December launch of SpaceX Falcon 9 to try 1st-stage landing on floating platform
They don't need you giving them ideas.... sheesh!
More generally, "don't open files". Unofficial PDF readers have also had their share of exploits, not to mention file formats like jpg, png, and gzip.
I'm sure I could point you to a Tokyo subway project that didn't have a cost overrun.
Awesome - what about using API Editors (or similar tools) as a way to browse or explore an API?

I've seen a lot of companies roll their own API "Explorers" too:
https://dev.twitter.com/rest/tools/console
https://developers.facebook.com/tools/
http://products.wolframalpha.com/api/explorer.html

As well as generic Rest API Explorers:
http://www.getpostman.com/
That's because it's important that people understand the meaning of the Fourier Transform and what it actually calculates. It's not just some random basis you throw in an equation without understanding what you're doing.
ODP and LaTeX beamers are both pretty good for presentations.
>4. If you have Window’s User Account Control feature enabled, it’ll throw up a prompt asking if the file is okay to execute. If you aren’t 100% sure that the file is legit, avoid doing so.

If opening PowerPoint file throws up UAC promt, that is so good evidence for that file to not be legit that your prior estimation for it to be legit realistically can not be close enough to 100% to override this evidence.

So, if opening PowerPoint file or other office document throws up UAC promt:

1. Say No.

2. Warn person who send you that file and other people who could receive it. If you created this file or if you opened it before and it did not throw UAC promt, that means that your system is probably infected and may be all your other documents are infected, warn other people about it.

3. Send this file to VirusTotal.

4. Run antimalware check on your machine with free tool from legitimate antivirus vendor (such as Dr.Web CureIt, Kaspersky Virus Removal Tool, Microsoft Windows Malicious Software Removal Tool). If VirusTotal said you that some vendors already detect that file as malicious, use tool from one of such vendors you trust more. Otherwise, prefer vendor which is not vendor of your currently installed antivirus, then wait until VirusTotal will detect malware in your file, and repeat this step.
He was the PCA champ, FIDE had their own champ (or might threaten to, I can't remember). IBM is about to throw a boatload of cash in hyping the event.

From my perspective it would seem anyone claiming to be champion would be under pressure to play or risk having the other league's champion be hyped as the best player in the world by IBM.

I think without the split that Kasparov may have been able to dictate more firm terms. Examples such as requiring previous play by the computer, 3rd party auditing, release of logs afterward, etc...
The 'Accent' compiler-compiler can have some advantages over yacc.

http://accent.compilertools.net
There is a reason that the oath of witness in U.S. court systems requires telling not only the "truth" (i.e. facts or truthful opinions), but "the whole truth" (i.e. all important contextual information/opinions relevant to the question).

The best you can say about Assange building a narrative with carefully-manipulated facts and opinions is that it's manipulative, even if not false.

After all, that's what you guys all say when the NSA does it, is it not? The NSA isn't even this bad, they generally choose to be completely silent instead of feeding manipulative facts.
Apparently the pin was used with KNOX Personal not that standard KNOX enterprise suite:
https://twitter.com/xuf_/status/525745093064785921
I suspect the Chrome issue (which I've run into) is the slow rendering of Chrome's blank page. You touch to focus, type one character, and Chrome replaces the blank page with the rendered page, so the OSK shuts (or you lose focus)
When I rode regularly in college anything less than about 20mph was considered "pedestrian" and there were days in group rides that we averaged over 25mph. There were some rides averaging very nearly 30mph.

If you've got that kind of a background 12.5mph doesn't feel right. So maybe not entirely pedantic.
Their converter probably has its own share of vulnerabilities, but the most it could probably do is start executing JS.
Once upon a time I used to think Greenpeace stood for something, wanted to make a real change in the world and then they go and pull crap like this. Sorry Greenpeace, but this is just plain childish and in the end, does very little to bring attention to your plight and just makes you look bad.

There are worse things happening in the world than Amazon not running green data centres...
The better they get at emulating quirks of Office the more open to this kind of stuff they get.
Nuclear is dirty now?
To be clear, I started with the Apple II+, stayed Apple through Mac SE/30, switched to Wintel for enterprise interoperability till Apple adopted Intel CPU and switched back.
Really? The original piece (which apparently was popular enough to get the NYT devs to make an app) pushed the premise that 7 minutes could produce "molecular changes within muscles comparable to those of several hours of running or bike riding"

http://well.blogs.nytimes.com/2013/05/09/the-scientific-7-mi...

> The exercises should be performed in rapid succession, allowing 30 seconds for each, while, throughout, the intensity hovers at about an 8 on a discomfort scale of 1 to 10, Mr. Jordan says. Those seven minutes should be, in a word, unpleasant. The upside is, after seven minutes, you’re done.

The article was updated today (which is where I saw the app link) (http://well.blogs.nytimes.com/2014/10/24/the-advanced-7-minu...)...it talks about how the 7-minute workout is "not meant to be your sole exercise"...but that's out of concern that it "will become monotonous and demotivating"
This would be like buying a Ferrari and then re-engineering it to be able to successfully break the world land speed record.
Der die das die, den die das die, dem der- aargghhh! Sorry, had flash backs of my high school German classes
Show HN: Vidme API – account-optional video uploads and delivery
> no more heroic than buying a Ferrari.

A better analogy would be: No more heroic than risking his life to design and build a better sports car than has ever been built.
You can't "throw a basis in an equation", that's not a known mathematical procedure.

Once you learn enough about mathematics, and here linear algebra, you will start to reduce more complicated concepts to more simple concepts to build the complex ideas up from simple ones. In this case, the notion of a change of basis is definitely much simpler than the notion of an integral transform, so it makes sense to express it that way.

"What it actually calculates" can be a tricky topic in mathematics. It calculates what we want it to calculate, that's how people came up with the definition. So the way to understand "what it calculates" is to understand "what do I want it to calculate". Somewhat like programming, really. If we want to calculate a function's representation in a convenient basis, then that's what we'll make Fourier transform do.
Easter Islanders Sailed to Americas, DNA Suggests
Thanks, that brings back memories. Looks like Poland decided to do a prequel :)

http://fc02.deviantart.net/fs27/f/2008/144/9/8/BattleZone___...
Bluetooth spying beacons uncovered in LA and Chicago
A neat website, but where are the links to the "Science" ?
Looks like something you would see in the Battlefield game series, more specifically Battlefield 4. Quite clearly Poland feels threatened with the events taking place in Russia and Syria and wants to show that it is not some small place that can be pushed around. To be honest, I honestly do not blame them, the world is a dangerous place and it only continues to grow even more dangerous. Russia is growing increasingly unpredictable and who knows will be stupid enough to follow them or any other reasonable threat country into war if it ever comes to that?

Completely unrelated, but I recently travelled to Poland and it is one of the most beautiful places I have ever visited. The people are super friendly, picturesque surroundings and a mixture of historical and modern buildings. If you ever get there and visit Kraków, head to Moaburger for some of the biggest and best burgers you will ever feast upon. I have seen their nice side, I would hate to see their bad side if provoked, I would not want a stealth tank sneaking up on me, especially in winter.
Absolute Madness
This is reminiscent of Thor Heyerdahl and the http://en.wikipedia.org/wiki/Kon-Tiki but actually rather different.
Smoke and Stones Clashes Rock Jerusalem at Friday Prayers
Ah interesting re self - how did you find out about that?
I Don’t Live in Vegas, but I’m Excited for Vegas UberX
It's also likely that if actual UFOs were captured on a cameraphone, no one would believe the footage for a second. I certainly wouldn't.
And "how" was it verified? When Apple was building a large datacenter in North Carolina[1], a lot of local techies were saying it was for 2 purposes -- Siri and iCloud. Granted, that was the popular technology at the time for Apple, so it may have been inferred knowledge, and not directly stated...

I also wouldn't be surprised if they used AWS/Azure for load balancing, geodns, routing and simple filtering before actually being tunneled in to their datacenter.

[1] http://appleinsider.com/articles/13/03/25/apples-icloud-reig...
No they don't, Haskell is anywhere from 2-6x slower at the same problems. http://benchmarksgame.alioth.debian.org/u64q/benchmark.php?t...
Let me try a (hopefully unspecialized) basis view explanation. I think this is more of an explanation of Fourier Series, but hopefully it gets the idea across:

Consider the space around you. Pick some frame of reference with a fixed origin point in space. To specify an object, you must specify the distance along each independent direction (x, y, and z in 3d space) to arrive at the object from the fixed origin. These independent directions are referred to as a basis for the space. Often these independent bases are perpendicular (or orthogonal).

For higher dimensional spaces its the same idea. It turns out we can even have infinite dimensional spaces whose bases are functions that can be perpendicular in a certain sense. It also turns out that complex exponentials (waves) are an orthogonal basis for a certain space of functions. This is really cool! It means we can refer to any function in this space using the complex exponential basis functions just like we referred to objects in 3d space using three independent directions.

Why is this useful? The magnitude in a particular independent direction in this space tells us about frequency content of that function. So instead of the first coordinate telling you how much x distance there is, it says how much of a certain frequency there is.
Chicago to mandate coding classes in public schools within 3 years
I'm pretty sure that swarm was very over-estimated. People had a habit of doing such things back then.
By definition there are a lot of UFOs around, the trouble is just that none of them are commandeered by alien intelligences from beyond the Earth. There is no credible evidence for it (although I recognize that credibility standards vary a lot depending on who you talk to).

Personally, I find the absence of aliens surprising. This may one day even turn out to be problematic. Most HNers are probably aware of the Fermi Paradox (http://en.wikipedia.org/wiki/Fermi_paradox).

One of the most likely answers seems to be that space is big and manipulating spacetime for FTL travel might be technologically intractable. Maybe we are living in a galactic dead patch, as a statistical fluke. Maybe technology-building civilizations are astonishingly rare. In any case, we would expect at least a few drones zooming by every once in a while.

But the absence of contact might also hint at a severe problem in our galactic region which we have not yet encountered. Another common scenario is that technology using species are so unstable as to exterminate themselves in most cases. It is unclear how such civilizations would all have a tendency collapse though, as it seems that different types of life forms should have vastly different behavioral characteristics.

However you turn it, most scenarios mean that more likely than not the galaxy should already have been colonized many times over, and by rights it should at the very least contain a lot of artifacts left behind. But apparently it doesn't. We should be very worried about this, something is not right.
I think he built up speed in the high atmosphere were the air is thin and was still going fast when he reached denser air and thus was going faster than the speed of sound in the denser air.
Try photographing something dark, distant, or moving on a camera phone.
Actually, that's not what I'm saying, but you're certainly entitled to your opinion.
Work has given me both a Surface Pro 2 and Surface Pro 3. We were always blown away by the performance of the Pro 2 how quiet it was and cool it stayed. The surface Pro3 with a newer processor (I think they have the same RAM) is much louder and gets much hotter. Watching the CPU when streaming multiple video streams, the performance is also much better on the Surface Pro 2 (in our examples we're capturing video from 4 USB cams). However, the screen size of the Surface Pro 2 I found almost unusable as a laptop. The pro 3 screen size is much better.

What they really need to do is sort it out so I can have two resolutions on different monitors, and auto-adjust the resolution on the surface screen depending on when I'm plugged into a monitor or not.
Isn't that basically what smartphones are morphing into, especially as HID continually improves?
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Node.js scales horizontally just as well as Ruby and Python (if not better).

Some of the services I've built in Node.js handle 1000 req/s fine without the need for multiple instances or threads.
Neil DeGrasse Tyson debunking UFOs:

https://www.youtube.com/watch?v=NSJElZwEI8o
The "disclosure" movement is not the most credible source on this, even among those who take UFOs very seriously. The heads of this movement are complete crackpots. Unfortunately they've taken some otherwise very interesting testimony from credible people and harmed their credibility by linking it with nonsense.
That was your first thought?
Yes, and then someone wrote, gee that number seems a little low for average bicycling speed, and it devolved into a bicycle speed discussion which is clearly irrelevant to the submitted article, just like a discussion about baseball if someone says "ball park figure".

Nevertheless, 20% is significant in bicycle speeds. It's not the 20% which is making this whole thing irrelevant. :)
It's done with BAE, the british defense giant. And it's based on a Swedish design, so it's a group effort.

http://en.wikipedia.org/wiki/PL-01
This is a must-read for automobile fans. Ferdinand Piech is as tech and business savvy as he is diabolical, and this article gives you a little perspective of that. I hope someone writes a book about him soon.

I mean, if you personally played a hand in creating the Audi Quattro (that dominated rallying) and the world's fastest car (Veyron, reviving a dead brand), which everyone deemed impossible, you've got to be in the history books of the automobile world.

Can't wait to see how they compete with electric upstarts and how they evolve their Ducati motorcycle brand.
Video of the presentation/Q&A is available online, too.

http://webcast.amps.ms.mit.edu/fall2014/AeroAstro/index-Fri-...

This summary of the presentation, and Q&A, is pretty thorough.

http://www.reddit.com/r/spacex/comments/2k7bh4/live_intervie...

I liked these points:

• Musk thinks healthcare is more important than a colony on Mars. However, lipstick isn't (i.e. we spend tons of money on that, when Mars is more worthwhile)

• "If you saw a movie with aliens landing, how do they land? Like that. It would be weird if they landed in the ocean with parachutes... LOL"

• Q: "With commercial space taking off, what do you think NASA's role is in next decade? Besides giving you contracts..." A: "NASA's been very helpful to us. Huge fan of NASA. NASA is doing the right thing currently, given its constraints." (good, diplomatic answer)

• Q: "Are there any natural resources on Mars SpaceX could exploit" A: "Even if there were pallets of crack cocaine on Mars it wouldn't be worth it to ship back, LOL".

• Q: "A company has announced plans to build to space elevator by 2050." A: "I don't think its realistic, but Id love to be proven wrong. I always think of Charlie and Chocolate Factory when I heard the words space elevator."

• Q: "You've consumed lots of Sci Fi. What art has contributed towards your zeal?" A: "As far as key influences? Star Trek, it's a positive view of future. Star Wars was first movie he saw in theater, was super great. LoTR is his favorite book series, despite it being sort of anti-technology. Foundation Series is one of best ever. Clarke, Heinlein. Thinks The Moon is a Harsh Mistress is Heinlein's best book."

• Q: "I know NASA is working on SLS. They will eventually try to go to Mars. If they do, how does that change your focus as Mars." A: "We'll keep focusing on rocket technology. We want to focus on making Mars travel frequent, not one-off missions" (like NASA)
The comparison was meant to describe a speed to an average person - not a college athlete or professional cyclist.
In your mind, what warrants risk?
Have the link to recent “how a computer works” deck?
there was a front page link recently to a site that had in interactive walk-through of how a basic processor works from binary through simple instructions... anyone have that link?

i've spent some google time but coming up empty handed

thanks hackers
I don't envy the man. Just last night I led a Google+ "Hangout On Air" for a tech meetup I organize. The whole universe around Google+ products and related tools is so dense, opaque, and counter-intuitive I felt like Bill Gates trying to use Moviemaker(1) in 2003.

(1)[http://blog.seattlepi.com/microsoft/2008/06/24/full-text-an-...]
>If you’re on a build of Windows that has User Account Control as an option, enable it (it should be on by default, in most cases.) This won’t fix the bug outright, but it’ll throw up a big permissions prompt that’ll remind you not to open mystery files.

Default UAC option in Windows 7 and later is "Notify me only when applications try to make changes to my computer". That option is problematic because of various ways to exploit built-in apps to bypass UAC. "Always notify" is slightly less convenient but much more secure option.
FYI, to be exact :

"We should be very careful about Artificial Intelligence, if I would guess to what our biggest existential thread is, it's probably that" 1:07:44
Thanks, I didn't have it on my list! I will try it.
With a mutable vector, the fast path for appending an object is to increment the count and store a value at the end. That's two stores.

With a persistent vector, the fast path for appending an object is to allocate memory, copy the old structure into the new one (incurring several write barriers), increment the count, store the new object at the end, and then (eventually) deallocate the old structure.

Is it that hard to imagine that the persistent vector fast path will be 80x slower than the mutable vector fast path? As you say, a single cache miss can be responsible for that slowdown, and a cache miss is likely with the freshly allocated memory.

So then, by your argument, we ought to characterize the "constant time" persistent vector operation as logarithmic, since it's 80x slower.
Ironically, I can't delete the parent any more because ... I went for a 30 km bicycle ride after I posted it! :)
The problem is that most other countries do know that we are only "showing teeth" and that Poland actually doesn't have a big supply of these things, and the one we have are outdated as hell. This concept probably hopes to change that image a little bit.
Multi-carrier Apple SIM 'dedicated' to AT&T's network upon activation
How to Say Goodbye to Your Boss and Start Your Own Business
Yann LeCun responds to Michael Jordan's comments about deep learning