skysight-inc/HackerNews huggingface dataset:
Mentioning vitamin D is a great way to start an argument, especially what is an optimum level for humans as measured in a blood sample.

The controversy certainly comes up frequently at the medical conferences I attend. The "evidence base" remains unsettled, and there's a wide range of interpretations of the ideal range for vitamin D levels or intake. The conservative recommended level is 20 ng/ml, but there is substantial opinion that the minimal level of 20 ng/ml is way too low, and that 40 to 60 ng/ml is consistent with historic human environmental conditions.

Here's my take on the subject. Depending on where you live, it may be important or not. I agree with the comments here: the further north you reside, the greater the risk of inadequate body level of vitamin D and attendant health consequences.

At my location just north of the 45th parallel, I order D levels frequently and about half of patients show D level <30. (Reference range: 30-100 ng/ml.) Low levels have been associated with many conditions, but I'd point out cognitive dysfunction and depressed mood as less widely known effects.

Vitamin D is an enzyme co-factor at rate-limiting steps in pathways of CNS neurotransmitters synthesis. Negative effects on brain functioning are a logical consequence of D deficiency.

Human populations indigenous to arctic regions have only a few months a year of enough UVB exposure for synthesis of D in the skin. Yet they have survived at far north locations for a millennium. How is that possible? Consider their diet, very high in fish and seafood, e.g., 100g of salmon contains around 350 IU of D, so easily intake >=2000 IU/day.

We recommend D supplementation of 2000 IU/day and calcium 1g/day for most people who live north of 40th parallel, especially people living in rainy coastal climates.

Vitamin D toxicity can develop with super-high doses of D. I've seen it a few times, but only with very high amounts (>10kIU/day) over months of excessive intake. At any reasonable amount, say 5kIU/day, toxicity is very unlikely. In any case it's easy to check blood level if a reason to suspect it and advise accordingly.
It's odd that it not only ok, but mandatory, to discriminate based on someone's place of birth.
One obvious one for me, being an east coaster transplanted to the Bay Area: most people don't want to share a ride with a stranger. Bay Area (and perhaps the rest of the Northwest) upper middle class people are somewhat different. A more extroverted culture.
"Malan also said that 'it is possible' that the decision to exempt CS50 from the new restrictions on enrollment in courses occurring at the same time helped bolster its enrollment numbers. Last month, Dean of Undergraduate Education Jay M. Harris sent an email to course instructors notifying them of tighter controls on simultaneous enrollment for all courses except CS50."

Besides, David Malan is a rockstar himself. His classes are fun, witty, engaging, great for non-techies. Not a surprise that his class is one of the most sought-after.

[1] http://www.thecrimson.com/article/2014/9/11/cs50-breaks-enro...
undercut all of them out of business. now you're a honest to goodness monopoly.

http://dailycaller.com/2011/05/13/vindicating-standard-oil-1...
already cofounder/ceo of kyll, lyft for assassins, and looking for investors
we're not clever enough to price all externalities.
I don't think it's "bizarre" at all - getting paid _fundamentally_ changes things.

Although the "ban commercial use completely" approach is a pretty big hammer to use - as a hobbyist RC pilot who's flown with a camera aboard for some time (http://bigiain.com/Mini-Swift-RC-plane) I've had _many_ requests to take photos/video for other people, many of whom have offered money for it, and almost _all_ of which would require me to make safety compromises that I probably wouldn't choose to make "just doing it for kicks". And the more money on offer, the more tempting it is and the bigger the risks that might get taken.

While _I_ think the risks I take flying that plane in the linked video are reasonable (it weighs ~125g all up, and puts a maximum of about 55W into spinning the prop), I've seen people fly multicopters weighing over 6kg with eight 2000W motors spinning 14inch carbon fiber props in _way_ more public and crowded places than that. I certainly wouldn't choose to do that. And Youtube is full of clips which make me say "Really? You chose to do _that_ _there_? Are you insane?"

I think the "easier learning curve" on things like DJI's gear, coupled with it's accessible price - but _also_ coupled with a bunch of people who either haven't thought through the possible consequences, don't care about the consequences, or who think the money they're making means the risk is worth taking - will inevitably lead to bad decisions being made.

On the more optimistic side, at least _some_ places (here in Australia, for example), it seems like the authorities (CASA in my case) are trying to take account of the differing nature of different "drones", and at least proposing a graduated approach - a sub 500g craft probably isn't going to need to abide by the came rules as a 6kg+ one. (And, if the lower-bound in their current ruleset stays, sub 100g craft will be classified still as "toys" and not covered by these rules.)
The Arabs had been providing a substantial fraction of global oil since at least 1950, when the US began imports. However it wasn't until 1972 that the the US had no slack supply capability.

There had been previous attempts at oil embargoes, particularly in 1967[1] and 1956[2] during the Six Day War and Suez Crisis, respectively. Neither was effective. At both times, loss of supply could be made up for elsewhere. Peak oil in the U.S. lead to vulnerability.

________________________________

Notes:

1. http://en.wikipedia.org/wiki/1967_Oil_Embargo

2. http://en.wikipedia.org/wiki/Suez_Crisis
Thanks for clarifying that those studies are using 800 IU/day, which is still very low.
PureScript: Small, strongly, statically typed language written in Haskell
What exactly can you say except, about fucking time!

A small amount of common sense finally managed to stick to lawyers and the legal profession.

Probably won't last. Lawyers get jealous when they can't control and manipulate the little people.
Absolutely. I'm not advocating that we do away with the regulatory system, but that those drafting the rules look at startups like Uber/Lyft as signals and catalysts for change as opposed to reflexively treating them as threats on the system that Has Been And Always Shall Be. The world is changing rapidly, new needs and demands emerge, others die, and the red tape should be in constant reapplication, in tow.
if the R&D were any good, then there won't be perfect information though...
Why do you say that about lawyers moreso than software engineers or doctors?
Does it really need to reload the whole page to change to a new algo? Creates a crazy history trail you'll have to backspam through.
“6 States” Petition Signatures Insufficient
That sounds like an interesting direction to go. I had thought of something like that. My take was (paraphrased) if you make it somewhat expensive (ie. proof of work) to get into the network it makes it less likely people would go to the trouble.

One direction I've been pushing toward is (ignore the impractical nature of the solution for a moment) what if folks within the network were somehow invested in the integrity of the system somehow. If there were incentive not just to participate in the network but to ensure all actors they interact with are real people. So as folks "confirm" one another by signing digital signatures (or something along these lines) you build up a crowd-sourced effort to ensure the identities of other actors within the network.

Put all the identities / confirmation data into a blockchain and all of a sudden heuristics and statistical analysis can be used to begin dissecting the data to tell members of the network the probability that a given actor within the network is real or not.

In more practical terms, the idea is along the lines of some analysis I've seen in the past about Twitter accounts, and how a huge percentage of fake accounts are only interconnected among themselves, and not interconnected among real people. It's a very distinct characteristic that they've been able to identify about those fake accounts through data mining.
i always assumed civets had the market, but never considered rats
I'd be careful if I were you. I drank about half as much as you and my hair starting falling out after a month. When I stopped drinking the milk, my hair started growing back.
@napsterbr, just finished my first mission and got some BTC. Yay! I really liked how the on-boarding and the learning of how the game played was so smooth. For example, I was about to go back to the missions tab to see the IP address I needed, when the popup on the right showed it. This is a simple example, but this happened numerous times just in the first mission. By the end, I knew how to play. On-boarding was spot on
That's kind of the point of a democratic system. The government can change any law it wants.
No, if they did, they would not be able to claim that drivers are contractors. People driving on Lyft/Uber are allowed to perform trips at will, and can go on/offline as they please.

Something that would cause problems is if a driver was simultaneously accepting requests on one service while performing trips on another. I've had this happen as a user, and you just see the driver going the opposite direction for ten minutes while claiming to be 'on the way'.

Another problem might be cancellation rates; if a driver were online in multiple apps and got simultaneous requests, they would have to accept one and cancel the other. Acceptance rates are part of a driver's performance records on Lyft/Uber/etc. and declining lots of rides could get a driver's account deactivated.
This looks awesome. PHP doesn't get a lot of love but it is really improving a lot and obviously still dominates the web... Glad the turkish bug is finally done with.

Would be really nice to see security augmentations to the language. The vast majority (maybe 9/10) sites I look at where no framework was used, the site is missing have no CSRF tokens, very poor XSS protections, and RCEs are pretty common too. I think this would really improve the language.
> One of the fundamental concepts in algorithmic information theory is that the physical design and construction of your "novel golf club" is completely and perfectly equivalent to a mathematical equation in exactly the same way the RSA algorithm is.

Equations and algorithms can't generate force or protect metal from corrosion or convert chemical reagents into medicine. They have no corporeal existence. There is no computation you can do that will get the golf ball into the hole.

> And as fabrication technology is becoming more sophisticated this fact is starting to become more obvious in practice.

Using a 3D printer to make a patented golf club is clearly patent infringement. Widespread availability of fabrication technology is certainly going to make enforcing certain patents much more difficult in the same way that it has for copyright but what does that have to do with patentability?

> No one patented modular exponentiation, they patented an encryption algorithm that employs modular exponentiation. That is a distinction with a real difference.

It's the same piece of code. Math has no particular intent.

> All patents have this type of construction. The same argument could be used to assert that all chemical process patents are patenting common chemistry or facts of nature.

No one is disputing that anything can be described by math. The point is that the math is different from the thing it describes. A chemical process is not itself math. An algorithm is.

A good way to understand it is to realize that a physical thing can be used as a "computer" to execute the mathematical algorithm describing its behavior but the reverse is not the case. You can calculate 'E' in "E=mc^2" by setting up a nuclear reaction that will convert a mass 'm' into energy 'E' and measuring the energy that is produced. You can perform the same calculation using a general purpose computer. So the algorithm/formula "E=mc^2" can be executed on a nuclear reactor or on a smartphone. But doing the calculation without the nuclear reaction will not actually produce 'E' joules of energy that could be used to e.g. drive a steam turbine. That's the difference.
That's not too different from a pretty old observation in the chess world: the presence/absence of an evaluation term is more important than the weighting given to it.

> So I agree with this claim - uniform distributions are fairly robust to errors. But I don't think that's particularly related to randomness - Monte Carlo is only needed to integrate the distribution.

Ah, that's an interesting distinction, thanks. I'll have to think about this some more. But given a situation where exact integration is intractable (like chess or Go), I'm not too sure what the difference really is, because it is those cases (on first thought) where the uniform distribution is useful--if you can see to the end, you don't need to care about bias, right? I mean, "randomness" in the strictest sense is not really necessary; all these programs I speak of used deterministic pseudorandom generators of course. It's really just about ensuring lack of bias given finite sampling. I'm happy to hear your take on it though--you definitely seem to have a lot more knowledge of math/statistics/etc. than I do.

(That does remind me of another fascinating tidbit from the Go world: programmers noticed that using a low-quality PRNG, like libc's LCG rand(), produced significantly weaker players than more evenly-distributed PRNGs, even though it would seem that playing lots of random games of indeterminate length (with the PRNG called at least once per move) would not correlate at all with the PRNG's distribution.)

The adversarial-or-not issue is also good food for thought. I'm not convinced that it explains much in this case, though, since I believe most of these observations were made by playing computer-computer games with each program using very similar algorithms, or with old hand-tuned programs against the newer Monte-Carlo based programs.
SuiteCRM (OSS fork of SugarCRM) will soon be raising money to create a non-profit foundation, https://suitecrm.com/index.php?option=com_content&view=artic...

There is also Oodo (formerly OpenERP), https://www.odoo.com

Either of these is better than starting from scratch, due to the existing apps/templates.
U.S. Congress to Consider Sanctions Against Nations That Traffic Ivory
Increase Google Plus Follower Count
Putting aside the fact that using sizeof is risky in itself, i'd argue the default form should be

strncpy (buffer, "abcd", sizeof(buffer));
assert (!buffer[sizeof(buffer) - 1]);
Only feedback I have from the landing page:

Please please please don't hijack the scroll.
Works okay on an old Core2duo Macbook with Nvidia 9400M GPU in Chrome 37.something, so it's likely the driver.
> many of whom have offered money for it, and almost _all_ of which would require me to make safety compromises that I probably wouldn't choose to make "just doing it for kicks".

And because of that, you're advocating that all commercial drone usage be prohibited? To me, that doesn't follow.
I oppose all those instances.
This is insane. Looking at the parking and traffic and pollution issues that plauge the big coastal cites, this makes no sense at all.
My Coop while I was a Georgia Tech student payed 16.50$ to start out. The people I knew who did some free lance or part time development charged or were payed between 10$ to 30$ depending on their reputation.
I'm a huge fan of Ubiquiti after buying a bunch of the AC units for my house, including one for outside. The UniFi software is very slick and easy-to-use. They've done a fantastic job wallpapering over the complexity of wireless (can't wait for zero-handoff roaming on AC!).

My router right now is a Mikrotik CRS with 24 ports, but I'm tempted to replace or supplement it with one of these, as Mikrotik's interface is crazy complicated, and I'm not entirely confident that I can set my network up the way I want it without leaking packets between VLANs.

I wonder if this gateway supports multi-homing.
I came here to say exactly that. The new projects YC wants to see are great and are defiantly problems worthy of effort, but the more pressing problems seem structural at the moment.

I also agree with your final conclusion ("skynet") and think it is inevitable given time. Remove human corruptibility from governance. Efficiency... it is selected for.
Using Safari, which isn't supported, but I wanted to say kudos to the author for adding a video for unsupported browsers. That was definitely a neat feature that many WebGL demos overlook!
AI doesn't mean AGI/strong AI/human-level AI. In the last few years deep learning methods have advanced the state of the art in different areas a great deal. Natural language processing, machine vision, and even some results in reinforcement learning. And these are all things a small startup could reasonably do.
I love their Wireless UniFi stuff, they have the best AP's on the market.

1 Gb Interfaces in a firewall is a bit on the cheap side for a modern firewall.

Anyway knowing what i have seen Ubiquiti do previusly i would not be supriced if it breaks every sold competitor firewall in it's price range.
Go does too. http://play.golang.org/p/ficmYvVehL
The problem is our taste for grain (and alfalfa) fed meats.

People probably wouldn't eat as much meat as they do now if it were from free range, non-grain fed animals.
There is something to be said about security by obscurity. I don't want to see any security implementation because is means shared vulnerabilit.
How would the hydrogen be used? Directly as a fuel, or as a means to create electricity ?
I saw apache is as mention.it nearly the same what i doing now.consider as code block-From database column can create application.Upon combobox figure come foreign key value.The reason i do this,client keep playing what if scenario form like this is this suppose to validate or not?Why code block instead of user define validation.They will some part wanted to customize triple field combobox filter.It cannot be done via user define column based rule.
I feel like developers avoid use of much safer functions like this out of some misguided belief there'll be a performance impact, unfortunately. Premature optimization etc.
0.75mm wheel skin thickness? check.
Machined out of aluminum? check.
Punctures and tears in the wheel? check.

Surprised it lasted this long. I understand weight was a concern, but surely for $2B, there's some exotic, more resilient alloy that could've been used? Or maybe just make those middle wheels 1mm thicker and eat the extra 3 1/3Kg.
Maybe I just happened on a few bad videos, but my understanding was that "hyperlapse" didn't mean "regular video, sped up a few notches".
Petition asking the White House to promote policies supporting ridesharing
Gabriel Garcia Marquez.
Side note about Vitamin D. Vitamin D increases calcium uptake into the bloodstream (where it finds its way into bones and such). This is why D is usually recommended as a secondary supplement to take with Calcium (or is usually bundled with Calcium).

However, if you're like me, you shouldn't take D as you don't want to suffer from Hypercalcemia. It's really hard to diagnose until somebody bothers to do a blood test for elevated calcium and presents as basic aches and pains at first, and as it gets worse turns into all kinds of weird mood, fatigue and sleep disorders.

Hypercalcemia can be deadly if left untreated and is not pleasant to have. Hypercalcemia can damage your central nervous system, lead to untreatable depression and cognitive dysfunction and eventually coma and cardiac arrest. Fortunately, I had a good doctor who caught it when I was complaining of constant fatigue, muscle weakness and nerve issues in my face and thought to check for it. At the time I was in grad school and working full-time so I just thought it was poor sleep habits. I was also taking 5,000 IU/day of Vitamin D thinking it would help my mood a bit.

There's a bunch of other copresent medical issues with hypercalcemia, so if you catch one, you might catch the other, and fortunately treating one can help with all the others.

These days, normal D enriched foods are fine for me as they don't come close to the high levels of D I was taking before, but I try to moderate D and Calcium rich foods a little.
Kamcord (YC S12) Is Looking for iOS App and SDK Engineers
Kamcord has raised over $10M in seed + Series A funding and is growing like crazy! We’re building a social network centered around gameplay videos for the world’s 1 billion mobile gamers. Growing the community in our iOS app is at the crux of our company’s vision.

We are only a few months into our iOS app development and have tons of both foundational and crazy ideas to work on. We’re built on a really solid foundation though:

Our app’s first major launch was featured by Apple in the Entertainment category for five consecutive weeks.

We were the first in the world to build mobile gameplay recording technology for iOS and Android. Our recording tech is embedded in hundreds of mobile games and players are using Kamcord to upload 1 hour of video content every minute - that’s 1% of YouTube’s upload volume!

RESPONSIBILITIES

Own significant portions of the product from conception to App Store submission.
Work with the product, design, and growth “team” (1 person each :D) to plan and prioritize future app features.
WHAT WE'RE LOOKING FOR

Driven team player who doesn’t need hand-holding to get things done. We love folks that own things 110%.
Deep understanding of Objective-C and iOS programming best practices.
Comfort with multithreaded code. You eat race conditions for breakfast.
“Close enough” doesn’t cut it at Kamcord. We want people who obsess over user experience and pixel perfection.

BONUS POINTS

Shipped quality apps to the iOS App Store.
Solid working knowledge of testing frameworks and build systems for iOS apps.
Experience designing robust client-server APIs.
You want to dominate at everything from company ping-pong battles to board game nights.

WHY YOU SHOULD JOIN US

We’ve kept our hiring bar really high - you will work with the best.
Our app engineering team is just 3 engineers - you’ll get the opportunity to take on a lot of responsibility and grow a ton!
You’ll continue to build a community that produces heart-warming videos like http://www.kamcord.com/v/8IMDuw1vd6p and genuinely makes people happier.
We still have so much to do from adding basic features like notifications to designing an iPad app from scratch - you’ll be joining at the ground level.
We’re very supportive of people that want to start their own company in the future.
What? I don't understand what you mean. PHP is not any more insecure than other languages. Some extremely secure sites run PHP....so security augmentations would not be obscurity.

An example would be built in CSRF protections through something like a form builder
So, a date parsing error?
The point in question for oil is the one control you haven't mentioned: supply control.

That was the whole point of the TRC quotas: to match wellhead output to demand. If you'll follow my reddit link above I show the growth trend in GDP and oil prices -- what was achieved was a very high level of price stability. Not through direct price controls, but by matching levels.

Post-1973, prices wander all over the map, see BP's Annual Statistical Review:

http://www.bp.com/content/dam/bp/images/other/Energy-economi...

From: http://www.bp.com/en/global/corporate/about-bp/energy-econom...

Note that prices stabilize in the mid-1930s, and actually fall in real terms through 1973. The period since is marked by profound variability.

The good from supply and consumption matching is that there was a high degree of economic stability during this period.
I want to try it. Any free trial plan?
Lyft has begun promoting this petition on Twitter: http://wh.gov/lh3L8