skysight-inc/HackerNews huggingface dataset:
I think you missed the part of the article where the said that the batteries on some of the cars deteriorated at a faster rate than they should have done, leading the cars to use their (gasoline) engines more - thus reducing the fuel economy which was based on the car working as an effective hybrid.
Just in time for the removal of the "View Source" menu item.
IBNIZ - an audiovisual virtual machine
This is actually sadly exactly what the author missed in their article. DNS propagation is directly controlled by the TTL setting on a domain entry.

TTL stands for Time To Live, this is the number (in seconds) that the DNS entry tells people to keep it active in the DNS server cache's (presuming the DNS server will not over-ride this for either a higher or lower number, which is entirely their choice but not common.) This is done so that any request to adomain.com will not have to require a DNS lookup to the main serve for every page request.

It is true that if you have not done a lookup on the domain, then your computer and DNS servers would presumably not have any active DNS records for the domain. So you can make a change and "viola" within 5 minutes (the next time you visit the site) you will have the updated record. However, if you had recently done a DNS inquiry and eceived the record for the old DNS entry, you will need to wait for the old DNS entry to expire before the DNS server you are using will choose to look it up again. This doesn't go into any of the fun of what happens when you have 2 or more DNS servers setup, but ultimately what people are seeing is that the "48 hour" waiting period is substantially less, however most ISPs will stick to this default number to reduce worrisome support from their clients who think otherwise but don't know anything about how DNS works so support will never be able to explain this in laymen terms (or wait, did I just do that?)
The $100 Sandbox
URDU SEX STORIES: Teacher Ka Kaam Taleem Dena..
If you look at this specific moment in time on Tuesday, no it hasn't effected their bottom line yet, but company perception is everything and GoDaddy's company perception has gone from "gray area that some hate and some don't care about" directly into the RED.

Are any HN'er going to forget this for their next startup? Or their next contract? Or when their buddy asks them to register a domain for them?

No, we are all going to remember that as long as we don't use GoDaddy we will be fine.

That is going to cost GoDaddy a lot in the years to come. I don't think bankruptcy is around the corner, but I think we'll hear about some down sizing in a couple of years.

FWIW, I am thrilled to see the karma fairy show up and pay GoDaddy in full for years of garbage.
It depends a lot on the prior state of the domain. If it was assigned at all, or is being transfered, then is prudent to wait out the TTL of the NS record-set on the parent zone. Here's how it works.

When a resolver tries to lookup the IP for my website - www.notesfromthesound.com - it probably has the name-server set for "com" cached, it knows those servers, so I'll skip that step for now, but the same principle applies at that level.

So, the resolver queries a com server, and gets a referal;

cuan% dig www.notesfromthesound.com @i.gtld-servers.net.

; <<>> DiG 9.6-ESV-R4-P3 <<>> www.notesfromthesound.com @i.gtld-servers.net.
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 25366
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 4, ADDITIONAL: 2
;; WARNING: recursion requested but not available

;; QUESTION SECTION:
;www.notesfromthesound.com.	IN	A

;; AUTHORITY SECTION:
notesfromthesound.com.	172800	IN	NS	ns-593.awsdns-10.net.
notesfromthesound.com.	172800	IN	NS	ns-431.awsdns-53.com.
notesfromthesound.com.	172800	IN	NS	ns-1199.awsdns-21.org.
notesfromthesound.com.	172800	IN	NS	ns-1820.awsdns-35.co.uk.

;; ADDITIONAL SECTION:
ns-593.awsdns-10.net.	172800	IN	A	205.251.194.81
ns-431.awsdns-53.com.	172800	IN	A	205.251.193.175

Note the TTL on the NS record set; 2 days . This is the TTL for the rrset in the parent zone. That TTL means "Feel free send queries for names within the notesfromthesound.com zone to these nameservers for up to two days".

Now, when I query the authoritative nameservers for the child zone, I might get a different TTL value for the same rrset;

cuan% dig www.notesfromthesound.com @ns-593.awsdns-10.net.

; <<>> DiG 9.6-ESV-R4-P3 <<>> www.notesfromthesound.com @ns-593.awsdns-10.net.
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 29364
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 4, ADDITIONAL: 0
;; WARNING: recursion requested but not available

;; QUESTION SECTION:
;www.notesfromthesound.com.	IN	A

;; ANSWER SECTION:
www.notesfromthesound.com. 300	IN	A	72.32.231.8

;; AUTHORITY SECTION:
notesfromthesound.com.	7200	IN	NS	ns-431.awsdns-53.com.
notesfromthesound.com.	7200	IN	NS	ns-593.awsdns-10.net.
notesfromthesound.com.	7200	IN	NS	ns-1199.awsdns-21.org.
notesfromthesound.com.	7200	IN	NS	ns-1820.awsdns-35.co.uk.

Just two hours. But as a resolver, which value do I go with? Some resolvers take the position that the child zone is most authoritative about the operator's intent. That's called "child centric". Some take the position that the parent zone's intent matters more, and we shouldn't be bugging the parent zone nameservers very often because of misconfigured child zones, that's called parent-centric.

Data from actual experiments suggests that at least 3% of resolvers are parent-centric; https://mex.icann.org/ar/node/22921 , and as an operator I can confirm that it's regular to see queries coming in for up to 2 days after an upstream delegation change upstream.

In fact, you really have to wait out the higher of the two relevant TTLs, or risk queries being black-holed.

TLDR; honestly, wait 2 days.
Simple made Easy by Rich Hickey by several miles.

Also "Hammock Driven Development" by the same gentleman.
The real reason, of course, is that war is just so much cooler when people are dying. Sources: G. Carlin.

Honestly, though, I fully expect AI to advance sufficiently in the next 20 years that a 10s delay is sufficiently small, and the AI can handle anything likely to occur in under 20s on its own.
Yeah, but vistaprint is a business card company! What could you possibly expect out of their domain registration services?
I don't use line numbers in VS, because clicking on an error message takes me directly to the line I care about.
One of the golden rules of Sicilian "organized crime syndicates" is that you never, ever introduce yourself as a member or as someone who is connected. It is a hard and fast requirement that you are introduced by someone else who is inside.

This goes back to the earliest days of protection racketeering on the island, and is taken extremely seriously even today.

I'm not sure if the Campania/Napolitani families follow the same tradition, but it's a pretty good bet that if someone even so much as implies that they're "connected" to an Italian syndicate, they're not.

Also, if you think pretending to be a cop is a bad idea, try pretending to be affiliated with gangsters...
I also started learning rails in August, just launched my first app. I skipped over TDD, planning on coming back and learning that. Testing just seemed too abstract when I set out, I found it easier to boot my app and "test" in the browser by seeing what changes I made in code actually did.

I didn't find your issue to be something that confused me. There seems to be a lot out there about fat models, skinny views/controller, but it sounds like you should really just ingrain MVC as it pertains to rails in your brain. Rails guides are your best friend here. MVC in effect is the effective design pattern your looking for.

My two cents from a fellow rails beginner. Oh, and check out my app at http://www.uhpartments.com
Rental car companies already use airline-like pricing schemes, with a mandatory minimum rental period of 24 hours. One of Zipcar's selling points is that their pricing scheme is simpler and more granular. If Zipcar changed their pricing scheme, they'd become just another rental car company in the minds of their customers.

I suspect that there will always be people who prefer the more straightforward style of pricing. After all, knowing exactly how much you're going to pay and knowing you won't be paying for any unnecessary hours counts as a feature for a lot of people. It's like buying a Linode. It might not be the cheapest option for all use cases, but it gives you peace of mind.
Do you have a precedent for this? Generally the lawyers are all about this.
Everyone mentions Israel, but have you actually been there? I am curious about what would happen, should you get singled out for "enhanced screening" there by their staff.

Prior to 9/11, I went to Japan on vacation. The security made it look like it was a domestic flight, not a 24-hour one. Me and my sister got pulled from the line and led to a small room, with dozens of people.

We were only let go 4 hours later (after 27 hours flying, that wasn't exactly pleasant). And that's only because they were checking our story with out uncle, who was a native Japanese and went looking for us when we didn't show up at the airport.

And don't even get started on their multiple-page form, in Spanish. I asked for an English version because I couldn't figure it out (I am Brazilian, so they probably figured it was ok).

Also, my posessions got searched and I even got inquired about my religious beliefs - there was a postcard from my grandmother to my aunt which had a christian image. I guess that sort of thing would not happen in the US - at least not to a citizen, anyway.

Needless to say, while I loved the country, I hate the screening to this day.

In the US, a couple of years ago, something similar happened. I got pulled to the "yellow room", because my fingerprint didn't match the Visa (my brother's went on the record insted, probably due to confusion, as our names are similar). In any case, I was let go in a couple of minutes, after the officer inquired who the guy showing on the monitor was, and I pointed to my brother waiting a few meters from us. No idea what would have happened if I wasn't travelling with him tho.

He also mentioned I will always have that problem (until the Visa expires, that is). But, even with all these "enhanced measures", I'll still rather take my chances with the US if I have a choice.

Disclaimer: that was before the full-body scanners and the enhanced patdowns were in place at the particular airport I went to.
Godaddy Debacle
This year...I learned SAS Macro Programming to automate roughly twelve analyst jobs (including my own), a whole bunch of SQL (for the new job that replaced the automated one), some basic common lisp for fun (up to writing a Sudoku solver in ~150 LoC), and have just started on Clojure (because I love lisp, but want to be able to actually use it).
Eventually, every business wants to make profits. That's kind of the point of Business. The question is when. If you're a startup, you can:

A) Aim at near-term profitability (say, 12 month horizon) by keeping expenses low and focusing on revenue growth

or

B) Aim at long-term profitability (say, 5-10 year horizon) by raising a lot of money, spending it on sales and marketing, R&D, product, etc.

Each has advantages and disadvantages. My take-away from the article: if a competitor could beat you by raising $30M and focusing on growth at the expense of profitability, B) might be the right option. Otherwise, A) should be the default for most businesses.
>I fully expect AI to advance sufficiently in the next 20 years

Yes, people have been expecting AI to become human-like within 20 years for the past 6 decades.

http://en.wikipedia.org/wiki/History_of_artificial_intellige...

("Researchers expressed an intense optimism in private and in print, predicting that a fully intelligent machine would be built in less than 20 years")
It's worth noting that $300 for a day of manual work is considered a good salary in many parts of the country (and even in San Francisco).
Are they quality, well marketed apps? We on WP7 are somewhat app-starved compared to other platforms, most people I know on WP7 download apps left and right as long as they know the app exists. Free versions with ads alongside a premium version without ads seem to do very well, and gain money no matter what.

A big problem I've had is finding an app exists and being surprised that it exists. If it doesn't get advertised, there's no way to know it's there.
Symfony vs. Django
NY Life Expectancy Reaches 80.6 Years, Higher Than National Rate
Android Wristwatch Rooted (Motorola Actv)
Business of Software 2011 in Boston was great as usual. 300+ people that actually run software companies getting together to learn from each other. The most targeted conference for software entrepreneurs that I've seen.
Agree 100%. However we had to front $1500 in capital and we nearly lost it all when the check initially wouldn't clear.
I love how this guy's tweets are all him announcing what game he's playing until this controversy flared up. He must be pretty annoyed about the dent this is making in his non-stop gaming lifestyle.
I imagine it would be a legal issue depending on how it is discriminated.

I don't know particular US laws, but I imagine it would be a legal issue for me to have a separate "for whites" price and "for blacks" price where there were significant differences.
Against space piracy:

First, it requires that FTL ships be cheap enough that criminals can acquire them. This is another area in which the analogy between the age of sail and the space age breaks down. Sailing ships were skill-intensive but materially cheap. You had to have people with the right skills, but once you did all you needed was wood, rope, and cloth. But spacecraft are going to follow a post-industrial revolution paradigm of being materially expensive as well as skill-intensive. They are likely to require sophisticated, precision-manufactured components and expensive fuels like helium 3, fissionables, or antimatter. Imagine Captain Jack Sparrow commanding a nuclear-powered aircraft carrier and you’ll get an idea of the kind of difference we’re talking about.

If technological trends continue, the degree of technology available to the average citizen and the average criminal will continue to increase. As an individual, I have access to more media distribution than Queen Elizabeth could even imagine. As an individual, I can build a device like a CNC machine or a 3D printer from off the shelf parts.

Skillfully crafted wood, rope, and cloth would seem like miracle items to someone from the stone age. A CNC laser cutter would represent miraculous technological savvy and princely embodied wealth to someone from the 1400's. The equivalent to an Orion ship might well be within the rech of rogue elements of the late 21st century.

That said, space piracy probably won't happen, or at least won't resemble piracy from old movies in the least, but the technology being out of reach won't be the reason why.
The free version doesn't allow add-ons to be installed in the IDE. I think that's about it. The free version does allow you to make commercial apps, contrary to some postings I've seen about it.
There was a Ruby talk the guys at Nulayer did in Toronto that showed that Ruby can be nearly as fast as NodeJS. I wasn't fully convinced but I learned a ton of useful things.
"copy" is straightforward, how about to create a directory? Is it "create", "makeDirectory", etc?

Even for "copy", which order to the arguments go? This has historically been ambiguous. If you base it on the Unix standard, you get that for free.

I'd rather pick one standard many people know than just choose yet another arbitrary set of API signatures. So it really comes down to Unix versus MS-DOS, and I think most professional web developers would opt for a Unix standard. (Yes, there are still quite a few Windows-based developers, but I don't know how much time they're spending on the command line. And I say that having spent years (collectively) developing web apps on client sites where Windows was mandatory.)
I was not expecting so much traffic. I kicked in a few more gunicorn instances. Hope that helps.

Well thats the point of using the -trace option. It makes dig act as the resolver bypassing all of the caches.
Two things that I like to highlight from this article:

You can get anything and everything blocked if you have the resources (money) in India. Eg., Reliance Global

No amount of blocking can prevent bootlegging or piracy. SOPA can never work in India.
Yeah, Microsoft is trying to distance itself from Windows Mobile, so I cringe when people refer to it as Windows Mobile 7. WP7 doesn't deserve that kind of reputation.
Profit vs. growth is a false dichotomy.

Of course a growth investor is going to insist that "98% of startups should be growth focused". In this regard, profit and venture investment are two different (and, essentially, competing) sources of capital with their own upsides and downsides.
I'm sorry to break it but... that's a lie/attempt of trolling.
Godaddy's internal copyright policy is just as bad as SOPA, no court, only good faith, and remove before notification.

excerpt below and full text here http://goo.gl/cytjm

B. Copyright Claims

1. If the Complaining Party would like to submit a copyright claim for material on which you hold a bona fide copyright, Go Daddy requests that the Complaining Party substantiate such claim by providing Go Daddy with the following information via email to CopyrightClaims@godaddy.com. The words "Copyright Claim" should appear in the subject line. A copyright claim can also be submitted by mail to: Copyright Agent, Go Daddy, 14455 N. Hayden Road, Suite 219, Scottsdale, AZ 85260

.......

A statement that the Complaining Party has a good faith belief that use of the material in the manner complained of is not authorized by the copyright owner, its agent, or the law.
A statement that the information in the notification is accurate, and under penalty of perjury, that the Complaining Party is the owner, or is authorized to act on behalf of the owner, of an exclusive right that is allegedly infringed.

2. For Copyright Claims, upon receipt of appropriate notification from the Complaining Party, pursuant to Section 1 of Copyright Claims above, Go Daddy will remove or disable access to the material that is claimed to be infringing.

3. If the Complaining Party provides Go Daddy with appropriate notification, pursuant to Section 1 of Copyright Claims above, including information reasonably sufficient to permit Go Daddy to locate and remove or disable the material in question, or includes information concerning repeat infringement, then Go Daddy will forward the Complaining Party's written notification to such alleged Infringer and shall take reasonable steps promptly to notify the Infringer that it has removed or disabled access to the material.
The Power of Nuance of the Heart
I make around $1k a month just off of Elance. The key to success in freelancing is finding a niche.

The downside to freelancing is once you're in that niche it's hard to crawl out of it. I have been doing solely WordPress stuff on sites like Elance,etc. for the past 9months I have reached a point of boredom yet I can't get anything outside of that because everything in my portfolio is WordPress. So now I am screwed.
How NASA's GRAIL Probes Will Map the Moon's Gravity (Infographic)
"That which you seek is seeking you."
- Jalal ad-Din Muhammad Rumi, "Rumi" (30 September 1207 - 17 December 1273)
On the Smalltalk Browser (2007)
Space combat seems pointless to me.

What exactly would they be fighting over?

Presumably you want to reach space for resources, so asteroids, planets and moons with minerals, stuff like that. You might also want planets/asteroids/moons that are 'good' for colonization (easily terra formed or already life sustaining).

You probably wouldn't see many fights where you are firing at the resource itself. No one with the money to fire at earth, will actually fire at earth, because it is more valuable as an inhabitable planet. If each side can obliterate whatever is being fought over, you basically have an instant MAD scenario.

Similar with moons/asteroids. I'm not going to fire a massive kinetic weapon at a moon or asteroid (and blow it to pieces) if my objective is obtain that object to profit from it. More likely I'll pay people very well to infiltrate and sabotage it, repeatedly. I wouldn't even bother trying to invade.

Why not an invasion force?
Well, you could send an invasion force, but that would be fairly pointless. It is easy to defend an entrenched position that your enemy does not want to shoot at (sabotaging just the defenses might be too obvious, and i think would have too high a possibility of failure). On top of this they can use massive force to repel you, and you cannot (you don't want to obliterate your objective). So an invasion fleet is probably not likely.

A far more likely scenario would be to simply drive your competitor out of business. If they keep getting sabotaged, it becomes unprofitable for them to operate (it becomes a 'cursed' outpost, wages go up, you have to make repairs). Then you can easily take their stuff (or buy it on the cheap when they are going out of business).

This gets you into interesting things, you would end up with extensive background and history checks, genetic tests to prove that you really are who you say you are, mental/psychological screening, mind-reading, brainwashing, complex hacking of the computers that do background checks, genetic 'doping' to make a person pass as someone else, brainwashing.

Your competitors will also likely try to assassinate you if they every figure out that you are the one ordering the destruction of their outposts (it should be easy to figure out, as there will be few entities with resources to profit from this).
Ask HN: What books would you give a 16-year old interested in Math?
My son is going to turn 16 in a week. He is a junior (11th grade) in a US High School, and loves math. He participates actively in various math competitions (AMC, ARML and the like), in which he does reasonably well if not at the top. He is taking Calculus now and would like to pursue math major in college.

I want to give him three (or more) math-related books as his birthday present, books that would inspire him, expand his mathematical thinking and introduce him to new concepts. I am also looking for books that won't exceed his current aptitude level too much, lest he might be turned off completely from reading the book. I realize it would be difficult to judge this without knowing him closely, but I hope the information I gave is adequate.

I am not new to HN, but I created a new account specifically to post this question, as I my son is also a HN reader and I don't want tip him off.

I have found a MathOverflow thread (http://mathoverflow.net/questions/8609/favorite-popular-math-book) which gives me some ideas, but I am looking for the collective wisdom of HN readers. Please bear with my indulgence.
Has anyone heard more than rumors about whether Windows Mobile will support the Adobe AIR platform?
Father Noel delivers his second lump of "LulzXmas" to Stratfor