skysight-inc/HackerNews huggingface dataset:
According to http://www.academia.edu/3586500/Half-Lives_The_Rise_and_Fall... :

> Martland, on the other hand, emerged as a champion against any internal medical use of radium, alerting the AMA to its potential dangers as early as 1925

That's "Some Unrecognized Dangers in the Use and Handling of Radioactive Substances", at http://jama.jamanetwork.com/article.aspx?articleid=238584 . It includes:

> when long lived radioactive substances are introduced into the body ... death may follow a long time after, from the effects of constant irradiation on the blood-forming centers.

Joliot-Curie was awarded her doctorate in 1924.
you will need time. lots of time. I dont think its worth it.

you need to start off with
- logic and set theory. an introduction to proofs (level 0). something on (proofs in) classical geometry.
- then linear algebra. (level 1)
- group theory (fe Joe Armstrongs book) and an introductory (real, single-variate) analysis course. also probability theory (I'd recommend Meester's book) (level 2)
- calculus, rings & galois theory, topology (fe Munkres) (level 3)
- complex analysis, (and other stuff I didnt even pass) (level 4)

I'd recommend buying one book at a time and working through the entire thing, all the problems. It can quickly become too difficult if you try paralellize. But it can actually be a good experience to do one thing well.

oh yeah. the payoff of this stuff isnt very good. take it from a guy coding php for 10 euro / hour. so another warning not to do this.

Calculus is usually taught early because physicists need to know it as well but it depends on other things so if you do this early you will not really understand.
Random blog article destroys entire Google team of high paid professional engineers specifically employed to solve this problem and they did it just using incognito mode.

Upvote FTW.
World's fastest 2D camera captures 100B frames per second
Front-end Developer - Amsterdam - Local - Startup

People's Playground is a startup in Amsterdam creating Smart-tv apps. Looking for skilled front-end developers with good angularJS and HTML5 skills. If you're an EU citizen and bored with creating regular web applications, this might be something for you.

Also hiring a Project Manager by the way.
If you're interested, message me. For more info check http://www.peoplesplayground.nl
>The logic is sound, but doesn't play out in the real world that often.

It does play out in the real world a whole lot if you have the misfortune to be in charge of certain kinds of websites.

> once your site or app is targeted by a human who is determined to spam you, the stakes are raised to the point where neither CAPTCHAs nor standard honeypots will deter everything.

reCAPTCHA stops the bulk of it. Yes, people can still use CAPTCHA farms, but at the very least they increase the attacker's cost and will generally reduce their spam rate by a lot. After 4chan rolled out reCAPTCHA, 5+ years of spam problems vanished in an instant.
I worked in an IT department for a communications company that worked with AT&T where, at least once a month, I would find a different way to suggest to a different team lead to check out EMET in case we ever got targeted.

It got ignored.

If they ever get hacked, I won't be surprised.
Bug free first time and write code fast also helps.
How Maptia Built Their Startup on the Road
Art is a communication mechanism. So, I guess in my mind, your question would be similar to asking what's the gradient between a simple and complex binary packet.
Whouah! You mean I COULD patch bugs, fix dependency drift or have somebody do it for me against (reasonable) payment at all? That's wonderfull!

Try to do that with Microsoft Windows or Microsoft Word!
There has been some debate about the actual Inuit diet, specifically, about its carbs content. It seems that fresh and/or frozen flesh contains a significant amount of carbs (in the form of stored glycogen). This is a good review[1] of the whole thing.

[1] http://freetheanimal.com/2014/03/disrupting-carbs-prebiotics...
I think you're missing that the gif is created from the webcam facing the developer so their reaction to the error can be captured :-)
I have no idea if this is an accurate depiction, but there's an impression of what snorting heroin as if it were cocaine looks like in Pulp Fiction.
That was still product, but product design (metal frame) over product engineering (properly isolated antennas).
Get them to wear nothing, just to be safe.

edit - But it is what Jack Parsons would have wanted. Well, nothing but a goat skull, maybe.
Austin Kleon's Advice on How to Steal Like an Artist
Color of bits comes to mind...
I'd argue it's likely both identity and brand loyalty. Identity, because it gives individuals a language with which to declare ones self, and those that classify individuals a way of referring to groups of people. Brand loyalty, because it results in individuals supporting a political agenda that may run counter to their personal or philosophical self-interests.
You can also follow the NASA Twitter Feed: https://twitter.com/NASA
The GGD site has information on how to tell them apart:

"Test it by placing a pinch of the powder on your tongue. If, within a few minutes, this does not have a numbing effect, it is not cocaine. It could be heroin instead."

http://www.ggd.amsterdam.nl/english/drugsalert/more-informat...
I Bootstrapped a SaaS to $7K in Monthly Recurring Revenue. Ask Me Anything
Jobs was a master of saying one thing today and then contradicting himself tomorrow without hesitation or acknowledgment.
Inauthenticity is truly an underestimated flaw.
Yes, there are. You can over-invest into security and performance. That doesn't mean that should shouldn't meet a competent standard!
They could have Scott Manley do that. He does a great job with KSP, he'd do even better with real life stuff, I think. He knows what he's talking about, doesn't sutter or go "umm", and he sounds pretty hot.
I don't see why the sarcasm. Hedge funds are not banks; they live or die by the brains of the people they hire. If they perform well, they get more investors. If they fail to perform, they go bust, and noone is there to bail them out.
There may exist such a pathway, but we need to check its capacity, efficiency and by-product production. Maybe it is a pathway for critical situations only and we should not relay on it for prolonged periods of time.
>> USA PATRIOT Act — IMPORTANT INFORMATION ABOUT PROCEDURES FOR OPENING A NEW CARD ACCOUNT: To help the government fight the funding of terrorism and money laundering activities, federal law requires all financial institutions to obtain, verify, and record information that identifies each person who opens a Card Account. What this means for you: When you open a Card Account, we will ask for your name, address, date of birth, and other information that will allow us to identify you. We may also ask to see a copy of your driver's license or other identifying documents.

I also wonder if they have some verification on these cards before they're activated. (e.g. the card activation number is sent to your fake address.) It'd definitely be a solid plan IF you could create identifying documents based on stolen identities you can buy online that can fool a 17-year old cashier at a retailer, like an ID card. This is probably not trivial, but very far from impossible. And then use those cards without having to connect them to a verified Paypal account and without needing to activate the card. Nice idea!

Would need a ton of prep though if you want to walk away with more than $10k. If I had to choose (as an evil person, say) I'd still take the bounty over this idea.
I did see that when it came out. It looks like a great product, but it's essentially a DE safety razor, which I already have and use. I need something that I can travel on a plane with, and safety blades are out.
Show HN: Front-end framework optimized for internal apps
> It does play out in the real world a whole lot if you have the misfortune to be in charge of certain kinds of websites.

Very true; for some classes of sites, this is definitely the case. I was speaking more in a general sense, as I see many developers and project teams install some sort of CAPTCHA on every site as a default. In most circumstances, I think people should go for the simpler solution first, then be ready to drop in something like reCAPTCHA (or some other active spam deterrent) only when spam becomes a real problem.
The clogging is a big problem, and although I didn't mention it, it's probably my chief complaint with the razor - equal to the irritation.
Thanks for the links. Please put me on the list for when a video of your second talk is out.
Is this sarcasm? The purpose of Nocaptcha was to alleviate pain for users, as this blog says nothing else has changed. In fact Google said it would fall back to normal captcha when necessary we already knew that.
It takes an order of magnitude more effort to code around my custom-built anti-spam solution than it took for me to create it.

This doesn't always mean it's worth it, but it's a good leverage for beginners.
I'd agree with that. It's good to have the code production-ready at a moment's notice though, because the reaction time can sometimes mean the difference between having to clean up 100 spam submissions and thousands of spam submissions.
Stray cats/dogs are incredibly rare in NYC, especially Manhattan. The structure in place that allows people to report unsupervised animals works too well.
Lol no, i simply found original article too promising with minimum technical details so I decided to dig. And a weakness is a weakness, not a vulnerability. Something to think of.
SETI, METI and the paradox of extraterrestrial life
Scott McCloud's _Understanding Comics_ presents a more robust paradigm than abstract-not. He posits a triangle whereby visual communication selects a space between three poles: representative , abstract , realistic. I encourage you to look at his slideshow on the topic.

http://www.scottmccloud.com/4-inventions/triangle/index.html
Why jump to the conclusion 'art'? Maybe the 'sharks tooth' used to open the shell made the marks, as it was wiggled back and forth and jammed between the halves. Maybe when the meat was scraped from the shell, same thing. Intentional doesn't mean creative.
Since I have painstakingly gone through the series of proofs in Landau's book, I feel I need to weigh in here. On the surface, this book does appear to start from sets and convincingly proceed up to real numbers etc. It's interesting that you include the quote from the beginning about "high-school mathematics", which I think is laughable.

I personally believe that Landau was caught up in the spirit of the times and optimistically believed that math could be built up from "first principles". The famous kickstart to this is Hilbert's 1900 presentation. And it certainly continued up through Nicolas Bourbaki.

In fact, Landau's mathematics is presented in a somewhat archaic style and his proofs are extremely hard to follow in spots, as if he is making unstated assumptions. Overall, it is an interesting, but ultimately thankless, task to go through that book. It is a mostly a historical curiosity. The same can be said of Hardy's "Course of Pure Mathematics", which was recommended elsewhere in this thread. I find it hard to believe that anyone who recommends these books have actually read them.

To the OP, while I can relate to the goal from personal experience, after decades of going down a similar path, I can tell you that the history of math is very messy. Our textbooks and notation reflect this messiness. My recommendation is to dive into whatever part strikes your fancy, although it may help to start from where you are. For instance, if you program, you might want to get a book on physics in game programming or learn Haskell.
I never appreciated how awful the modern gaming environment was until I had a kid. For little kids in particular, it's incredibly difficult for them to deal with accidentally clicking the "buy X now" buttons and back out of the purchase process.

Personally, I shifted my son and nephews/nieces to old video game consoles. They love the NES, N64 and ColecoVision that we found in my parent's attic, and there's no nickel and diming within the games!
Good lord, that logo's font is horrible. It's impossible to read. Don't use cursive, like ever. And certainly not for your logo.
Seriously? Why are you on HN at all?
That's basically it though. The company can do no wrong so it tries to hire people who are extreme serial achievers. They're very sensitive to what people in the company say externally.
I agree the second paragraph is personal and meta, and I don't like it either.

But if I ever go down a rabbit hole and end up detached from reality, I would love to have someone to tip me off. It's like pointing out someone's fly is open.

Maybe OP is perfectly sane and just got confused on the physics of this system. Maybe they are very young. Or I misread their comment. In that case, OP has my deepest apologies.

It's just that perpetual motion is a well known trap for intelligent people; and expressions like "first real perpetual motion machine" and "provide back the energy to the battery somehow" make me worry that a fellow human being is going down the wrong path.
The lightest PHP database framework – Medoo 0.9.7
In addition the police think that the dealer does not know what he is selling. Heroin is much more expensive per gram than cocaine. And yes having seen both they would be pretty similar by sight. Especially in a little bag and poor lighting they would be remarkably similar. Given that the users are expecting cocaine, the dealer thinks he is selling cocaine and the drug is a white powder it is understandable that this is happening. Think Uma Thurman in Pulp Fiction.
The first Nobel Prize to be sold by a living recipient? According to www.nobelprize.org/nobel_prizes/about/medals/ :

> documents in the Niels Bohr Archive in Copenhagen show that Niels Bohr's Nobel medal, as well as the Nobel medal of the 1920 Danish Laureate in Physiology or Medicine, August Krogh, had already been donated to an auction held on March 12, 1940 for the benefit of the Fund for Finnish Relief (Finlandshjälpen).

Krogh died in 1949.

I guess they technically gave it away free to Finlandshjälpen, who then in turned around and auctioned it off, so they didn't sell it.

It seems a rather technical point though - add enough qualifiers and most anything becomes a first.
Did Sony fail to meet a competent standard? The fact that they got hacked is not sufficient proof they failed that standard. "Competent" does not mean invulnerable.
In my case, ketosis was great to fix my metabolism and kickstart fat loss when I was overweight. However, after a couple of years in ketosis, I started to get some worrying symptoms (mainly brain fog and constipation).

Now I am eating about 200g/day of carbs (mainly from rice and veggies) and I feel much better. My weight remains the same.

This is a good intro to the potential problems of chronic ketosis [1].

[1] http://freetheanimal.com/2014/02/ketogenic-diets-news.html
Security means security against the state actor threat. We got a foretaste of it because North Korea's head of state has strange priorities, but there's no reason a hack like this wouldn't be launched in a trade conflict, for example.

We created a security environment that prioritizes surveillance over security, especially in creating a market for zero-day exploits. That's a market that might exist without the US as a buyer, but the size and value of that market is dominated by US spending.

We would not tolerate the development and auctioning of weaponized disease microbes. But we funded a similar market that threatens our technology infrastructure.
Exactly the same experience here. My kids loved the game but constantly ended up in the app store. I removed all versions and explained to them why and that was that ... forgotten.
I'm reading this page:
http://homakov.blogspot.com/2013/05/the-recaptcha-problem.ht...

Why don't they just invalidate the current challenge when a new one is requested? :S
Be Wary of ‘Order Confirmation’ Emails
I'll give Amsterdam credit for not legally punishing drug users who need medical help, but it's not like the US doesn't offer warning when unsafe drugs are being sold[1].

Even as authorities await tests confirming heroin as the culprit in the latest deaths, the police and health departments are distributing fliers to community health and addiction service centers warning that “preliminary testing indicates that contaminated heroin may be available on the streets.” The fliers also list resources for patients and families struggling with addiction.

[1]http://www.bostonglobe.com/metro/2014/08/06/worcester-offici...
As in most industries, I think you are undervaluing the importance of sales. It's true that long term performance dips will cause a fund to go bust, looking at the number of funds that don't outperform (or only marginally outperform) the market, year after year, makes it obvious that sales are an important part of the hedge fund industry.
No CAPTCHA reCAPTCHA is not all Google is claiming it is. It only works if you're logged in to the site, so what's the point?

See http://ur1.ca/iza9d
Every mission doesn't have to start from the ground. We don't build a new refinery for every tanker. Make your factory in orbit (or better yet- near the asteroid field). Send the refined metal back.

The deal is, deflect just ONE asteroid to earth orbit, and that's maybe more metal than our civilization has mined so far. The potential is, a new order of society here on earth. The cost - some billions.
Annotations, Annotations Everywhere
Yep you're right. If you could see my face now, it would be red :)
Why Are Some Cultures More Individualistic Than Others?
"I write this from Silicon Valley, where there is little rice. The local wisdom is that all you need is a garage, a good idea and energy, and you can found a company that will change the world. The bold visions presented by entrepreneurs are breathtaking in their optimism, but they hold little space for elders, for longstanding institutions, and for the deep roots of community and interconnection."
"Hullo Its Scott Manley here!"
It's old school enterprise speak. When software-being-built consisted of a number of "Configuration Items" (CIs), such as .doc files, .xls files and of course heaps of .c files. There would be a dedicated "Configuration Manager" who's job it was to make sure that people wouldn't Visual SourceSafe their files over other people's files. He'd also write the batch files for the build server, assuming they had a build server.

They really do mean source control. Just that it doesn't have to be source code. It can be any "configuration item". Just like with git or svn or mercurial or zipping-directories-and-uploading-them-to-a-network-share.

Personally, I like "version control" for that reason. It just removes the subject of the operation from the name entirely.
On LLVM’s GC Infrastructure (2013)
We use the Drupal Honeypot module on PortableApps.com and it works well. Mainly to block spammers from flooding comments and forum posts with bots. As one of the world's largest Drupal sites, we're under constant attack. We still use captchas for user registration, though, as we have a ton of accounts created by humans and then posted to by bots, which seems to be the m.o. of some of the larger spammers now.
Preparing for a C++ Job Interview
Let's talk numbers.

A "fraction" of a bonus. Let's assume their bonus is a paltry 100k. A good infosec pro expects on average to be making at least 200k, so you have already blown out your budget. You can take a swing at hiring a consultant, but that gets you 5 weeks at around 70k, so you are eating a huge chunk of your fractional bonus budget.

Consultants don't really work for systemic problems like this though. Sony has cancer. They need empowered specialists to come in and tear out and then replace. These are both technical and managerial problems that exceed the capabilities of your average defcon attendee.

I disagree with both the approach you have taken here in envoking executive pay envy, as well as the substance. Security is hard. Practicing good security is expensive. You don't get to throw a couple of hundred grand around once and call it good. It is an ongoing and expensive investment.
Perl6 advent calendar post (from 2012) on macros might be of interest http://perl6advent.wordpress.com/2012/12/23/day-23-macros/
Orion (Space Shuttle successor) launch livestream
Porting Node.js crypto to the browser, part 1: all about ciphers
In Washington DC, there are a ton of Rails jobs. The government is moving to Rails and so are the consultants who fleece it. https://careers-excella.icims.com/jobs/1108/ruby-developer/j...
Cocaine and heroin are sold as white or off-white powders. They are very hard to tell apart. As someone else mentioned, cocaine produces local anesthesia, so that provides a "test" for users, but street drugs are rarely pure so there is always a chance that a batch of heroin has a local anesthetic in it so it produces a false positive (likely very rare though).

The thing that makes heroin masquerading as cocaine dangerous is that typical heroin doses are quite small (~10 mg) vs cocaine (~100 mg). If you get heroin instead of cocaine and snort your regular dose, it can easily be a fatal dose of heroin for a naive user.
Digital is the 5th dimension
I'm on the same boat regarding adsense you need a lot of traffic or extremely profitable keywords to make any substantial income.
I read recently on a similar Ask HN that https://www.conferencebadge.com/ is making a good income, and it can be considered 'little' I presume but they actually charge for their product/service.
What if you were to post a photo of yourself using drugs to social media? Could the UK police arrest you for that?

In South Korea they can and do arrest and prosecute people for photographic / recorded evidence of them doing drugs
even while overseas.
A Day in the Life of a Coder
It's a possibility, but the article does point out that the ends of the lines are perfectly joined, which is unlikely to happen by random chance of scraping a shell. I think such marks would also have probably turned up on more than one shell, since scraping is a pretty routine action.
Class types are generative. That's why p.V != q.V.
There's no session ID for current user. They can try to use IP as identifier. Admins can send remoteip to google to prevent spoofing but that parameter is optional and I suppose they don't rely on it.
I suspect there is some confusion here by the use of 'first principles' in the title. As a former mathematician when I see 'first principles' I think of axiomatic approaches to mathematics and the study of subjects like analysis, algebra and geometry from those first principles. I suspect however that what you want is good ground in the foundations of mathematics necessary to understand common applications of mathematics, which is quite different.

It is also a difficult question to answer without some context of your current mathematical understanding. Do you know any calculus? Any linear algebra? If you don't, those would be good places to start as they underpin many areas with applications of mathematics. Bear in mind too that Mathematics is a huge subject in that even if you take to it naturally, you're not going to acquire a breadth and level of understanding without a fair amount of study. Looking back I probably put a lot of hours in my youth into really understanding linear algebra fully for example to the level that I could teach it at a high-ranking university, and that was with the help of people whom I could pester with my questions and the incentive of exams to take.

The other approach is to look at the areas you want to understand and then work out what topics you need to study to fully understand them. Cryptography is worlds away from electromagnetism for example. Looking at cryptography, are you interested in public key cryptography or symmetric key cryptography? If the former, then you need to start learning number theory and if the latter, knowing some statistics is probably more relevant.