skysight-inc/HackerNews huggingface dataset:
You can lose because the option price takes into account how much the market expects the stock to move (the implied volatility). Your proposed strategy is going long volatility and delta-hedging to maturity.

Others have already chimed in, but I'll use a real life example. At the close yesterday, NFLX was trading around $100, you could buy a put option to sell with strike price $100 expiring December 18th 2015 at a price of around $7.00 a share.

Using your strategy, you would buy one contract and simultaneously buy 50 shares. Each contract comes in multiples of 100, so your put option covers 100 shares and you own 50.

If you didn't manage the trade at all until December 18th, you'll make money if NFLX is below $86 or above $114. You'll have lost money if it is anywhere between the two numbers, because the actual realized volatility of the stock did not live up to the implied volatility price (and for many reasons that is usually the case).

Even if you did manage the trade throughout, there is no easy free lunch. You could set a rule to close the trade the moment NFLX crosses over $120 or under $80, but then you'd be giving up the upside that it hits $150 or $50.
Australian Businesses Terrified of Metadata Retention – PureVPN to the Rescue
This analysis was written by Thomas M. Cooley, who was Chief Justice of the Michigan Supreme Court at the time. It was mentioned in passing in a Guardian article discussed here recently: https://news.ycombinator.com/item?id=10401416

The first page is here: https://archive.org/stream/jstor-3303981/3303981#page/n1/mod... Not sure why the link shows the final page as the thumbnail.
Hey Joshmn!

Zach here, Director of Support at DigitalOcean. Thanks for raising a few concerns.

I'm going to shoot you an email to learn more about what's not going right for you.

Best,
Zach
The way in which you communicate your important issue is probably equally important.
Spreading the wealth around between regions is another good way to spread the wealth around.
Yes. You would be purchasing both stock and the option from "the market."

As much as I like to joke about retiring to some farmers market to handcraft artisanal equity options, when people are talking about options on stocks (equity options) they are normally referring to exchange traded deriviatives.
Amazon Spars With The Times Over Investigative Article
Kinda depends on which platform you were on (GJP used several). Some were prediction markets while some were opinion pools, both of which are scored/rewarded differently.

Our company (Cultivate Labs) recently acquired Inkling Markets (a very early YC company that built prediction market software) and have been building a new version of the PM platform, which will hopefully address some of the risk/reward quirks.

If you're interested in this stuff, you might be interested in the two topical PM sites we're launching:
-https://sportscast.cultivateforecasts.com/ (obviously focused on sports)
-https://alphacast.cultivateforecasts.com/ (officially launching later this week, focused on global finance, politics, & tech).
Stanford Engineers Created Artificial Skin That Senses Touch
They weren't forced to support anything, ODF is an OASIS standard these days MSFT of which is a founding member.

There was quite an upheaval when ODF development moved into OASIS from W3C and included quite a few patents, and OpenOffice at the time wanted to drop support for the new ODF features.
sigh I really use to like LvMi but these days they seem to prefer to be pedantic than applicable.

Here's the thing I get from post-scarcity (so-called) economics.

1. Production efficiency out strips demand for what's produced.
2. This leads to a radical reduction in pricing schemes to the point that most goods becomes free (gratis).
3. Which leads to further devolution of the economy away from complexity (simpler financial instruments, fewer investment vehicles, fewer businesses big/small in general).

No where in this assessment do I see cakes made out of thin air. What I see is the cost of creating a good or providing a service falling so close to zero that in most cases the businesses in question only offer the good or service as part of something else. Think of it this way, if Apple found a way to produce the iPhone for cents on the dollar wouldn't it make more sense for them to just give it away and sell music and software (as a service)? Or how about if energy production becomes extremely cheap and common. Wouldn't utility companies find something else to sell you to use their energy (providing the energy as a gratuity for said good/service)?

Essentially, that's what has happened throughout history. Stuff gets so cheap that either producers make up the difference on volume of sales or they just "give away" the product as part of some other product. Eventually, extrapolating that sort of situation out it seems logical that inevitably most things become free even without the sale of another premium good or service only because you got two choices in the situation as outlined: stop making stuff or race to the bottom (sell the stuff at the same price until the economy implodes from all wealth concentrated with the capitalist class).
Awesome OS X Command Line
>It'd be great to see this experiment rolled out to double-blind placebo-controlled clinical trials, but until that happens, I'd still be willing to give it a try.

Google "liberation therapy" for an example. This bad science really is damaging, as it costs everyone a lot of money, hooks in vulnerable patients, and doesn't provide any benefit over the placebo effect.

The placebo effect can be strong, certainly, but if you're relying on that you are much better investigating the psychological factors that underpins it, rather than hoodwinking patients (whether deliberately or due to ignorance).
> Agile processes are either bent or ignored whenever it seems appropriate. There is a lack of process discipline.

This one I don't understand. Isn't it sort of the antithesis of the first core principle of the Agile manifesto? Shouldn't it be a _good_ thing that the processes are bent or ignored when appropriate.
Training junior developers
A Trello Template for Your Product Backlog
It is. But it's still not as "expensive" as pregnancy for a woman. I use scare quotes because I don't just mean monetary costs, but all kinds of costs.
> Team members reject Agile methodologies openly, as they do not want to be pushed out of their comfort zones.

I love how this equates critical thinking and complacency.

See? I can do it too.
Taking into account put call parity, you've claimed you can beat the market by buying call options. Since you buy the call in one transaction you avoid all risks from delays regardless of being an HFT. Best of luck with that, let me know when you become rich.

Some HFTs do stat arb on put call parity, though I would hardly call such a strategy "can't lose".

The bit which is likely untrue is "you can game the system to move the odds in your favour." This bit is entirely unsupported by the rest of your comment.
Any good books or resources for learning F#?
No, the security feature is that if you only pin, say, Verisign EV root and Digicert EV root then an attacker would have to pass EV validation at those vendors. Which is much more difficult to do than to get any cert anywhere.

You could pin your own cert, but that makes it difficult to rotate keys in a heartbleed type situation.
10 Point Checklist to an Effective Conversion Rate Optimization
I imagine this could be a prototype for growing food in tunnels on Mars or in the Moon.
> Currently, we have different models to describe reality based on the scale of observation.... Which is interesting because as you zoom into the microcosmos there's a point were the laws of physics magically 'switch' from relativity to quantum mechanics.

There is no hack and there is no switch. QM and relativity are just abstractions at different scales over the same underlying principles. We do have a problem of stiching them together, but that's just us not having figured out the relevant math yet. But you're not free to notice a problem in one part of the model and then discard the parts that match the reality pretty well. Any updated, better, unified model invented will not differ in its predictions from QM at scales and precision levels where QM is applicable, because our present models are based on empirical observation. Transition from Newtonian to relativistic models didn't make apples fall up.

"Time" is also something we define and is valid only within that definition. For now, "time" starts with the universe, so the question of what was before is meaningless and will be, until we find a plausible way to extend the concept beyond the beginning of the universe.

The map and territory analogy is a really good thing. The territory doesn't change in any way when you make a better map.
That's a nice idea too, but in reality it creates trouble (I tried it once). For example, my bank's fraud department often likes calling me several times a day asking me to "verify" transactions. I told them several times to NEVER call me, and that I will monitor my transactions via the online interface and call in the event of suspected fraud. However, they continued calling me, often at the most inconvenient times. Like when I have a bag slung across my shoulder, a grocery bag in one hand, a hot drink in the other, and standing on crowded public transit, they expect me to answer my phone, spill my drink, fall over on a moving train, and yell my social security number in front of everyone on the train? To top that, don't they realize that I need to login to my AWS account and check my instance usage before I can "verify" any transactions? Sorry bank, just DO NOT CALL. Ever. Period. E-mail me. This is the 21st century.

So back when I had one of those error message tones, they once decided that my contact information was "out of date" and just disabled my credit card while I was eating lunch, leaving me stranded at a restaurant like a fool, ATM and credit cards all disabled, without any way to pay. (Like seriously, are you trying to stop fraud, or stop your own customers?)

With the hold message this doesn't happen. :)
Of course it is a marketing term. There are enough people billing themselves out as Agile "coaches", or Scrum "consultants", that the marketing seems to be working. But if they aren't Scotsmen, they've done some great marketing to make people think that they are. So if you or your organization failed, it is because the wrong people were implementing it and/or you did it wrong.
According to this article, if you look at the prices insurance companies are actually paying (after negotiations), they're still way higher than in other countries: http://www.washingtonpost.com/news/wonkblog/wp/2013/03/26/21...

This suggests that the providers of medical care are actually the biggest culprits for our out of control healthcare spending and lack of access to affordable care, not the insurance companies, yet your post only passingly blames the former.
I did not mean to imply anything of the sort. However, Alex spoke specifically to what the incentives for men are, so I explained the incentives I think men have. For women, I only mentioned the risks. I think a charitable reading of what I said would assume that I think women also have positive incentives.
Stopped playing after 170B. Too bad they don't mix up the charts, kinda fun. I couldn't quite figure out the scale shifting helping, seem more like a momentum thing.
I just want free TLS dude.
Presuming that the approach in this situation is a failed one.

I've encountered extreme resistance from devs who have already made their mind about Agile ("just let me write some fucking code") and fought against the leanest of agile principles ("Hey, how about we try to only plan for 2-3 weeks ahead, aim to have something demoable, and then have a retrospective to see what we could do differently next time around?" "Pass.")

Fact is, too many developers think their job is to write code. It's not. It's to solve a customer problem. And if that problem can be solved with code, great. But since 99% of the time the customer doesn't know what their problem is, doesn't know how to explain it, or will change their mind once they see it, that is why agile principles were declared - to help developers deal with this challenge.
Swedish “welcome refugees” backlash
Performance Monitoring and Bandwidth Hogs – Interview with Mitchel Weinberger
Paul Irish (https://news.ycombinator.com/user?id=paulirish) should write a book about this topic.
The Species Roaming the Data World
This game is really easy, so it can't be realistic. I think that a lot of the challenge is removed by the fast speed that the game makes the years go by. It removes the challenge of waiting with what you have for a better opportunity; I'm not sure if institutional investors would ever hold positions for years on end.
Yes, just as broad groupings. Marketing in this case would cover Bus Dev, Sales etc, where Product would cover engineering, R&D etc.

In my experience it is all about getting the word out and taking care of the customers you get. Doesn't mean you can ignore the product just that you have to be out focusing on clients more than product usually to get traction. As you scale then the mix gets more balanced in my experience, but still favors Marketing & Customer Service.
Floid – Tool for creating interactive animations and multiscreen app flows
MovieShark – Another movie streaming website
That's a cost and a vendor lockin that will need to be addressed at some point regardless. Governments of all stripes are trying to migrate away from proprietary things like this as it's a risk to governance.

Perhaps the next great push should not be file formats (this is largely won now IMO) but to create a standard for Office scripting languages and document automation within government?
I have some drone designs based off common materials and tools. You need your hands and a sheet of A4 paper. Good luck registering those.
Plaster walls like a pro. I tried to learn it but I haven't got the knack.
The bit about lung cancer and cigarette smoking being more relevant to their cause of death is very likely true - they will likely have had more radiation exposure, never mind chemical, from smoking than from their entire nuclear careers.

Cigarettes produce leave polonium and lead 210 in your lungs - which, while "only" an alpha emitter, being already inside your body has plenty of opportunity to do damage. Smoking a pack a day is about the equivalent of having a CT scan every day, due to the cumulative buildup of radioactive gunk in your lungs.
> The example was just for illustration purposes, a simplified version of how it works.

Sure, but real options trading is much, much more complicated than that. You might as well have said "Find an equity that you know is underpriced and buy that". There is no secret sauce in options trading for HFT or otherwise. Like any market based trading profession you find a place you think is incorrectly priced, you take a position, and then you either make or lose money. The more often you are right the better a trader you are. There is literally nothing special about options trading vs equities trading in this regard (except maybe leverage as options can be dramatically leveraged).

> Over-the-counter (OTC) derivatives are contracts that are traded (and privately negotiated) directly between two parties

You could do private options I suppose (but HFT would have a distinct disadvantage here), but most options are traded on exchanges (I believe CBOE is still the biggest options exchange in the US) just like any other exchange traded instrument. The SEC, FINRA and CFTC all have rules about options trading in the US.

> I'm not attacking yummyfajitas, if that's what you're implying.

I didn't mean to imply you were attacking yummyfajitas, only that he probably knows about options pairs trades given that they are a very common trading pattern for anyone who has worked in the trading industry, HFT or otherwise.
> Team members reject Agile methodologies openly, as they do not want to be pushed out of their comfort zones

Or maybe they have identified Agile for what it is: a snake oil methodology that's completely unproven, which sometimes works, sometimes doesn't and, regardless of the outcome is never blamed if the project fails.

Bit like a religion.
Jeebus cripes, that's awesome.

The article says pip, I used apt-get which is probably somewhat behind. Either way.

EDIT: yep, the version in my repo was 0.8.0. I uninstalled and used pip, it's now 0.9.2.
Isn't rebranding content against the ToS of most of the APIs for the 3rd parties you're aggregating?
How Tesla's Gigafactory will change our world
Halloween Is a Knockin’ – Have You Met Real Estate Agent Doorknockula?
Personally I dislike this trend, it pushes the onus of application development into the domain of web developers, and they have shoddy tools (javascript?) and have to program for multiple platforms (chrome/firefox/IE) and- at the end of the day, nobody is signing your code (not like native programs).

At least we finally have a system that is multiplatform- but my web browser is seriously hungry, added to that most websites dictate how they will display their information to me- I seem to get less choice year on year. (and yes, I know I can plug my browser full of add-ons which give me back some control, but if JS doesn't run for instance, I don't even see the page in many cases, and this serves to increase how hungry the browser is)
They don't believe it will solve "our" problems. They dispute the very premise that they're "ours" to begin with--your healthcare is your problem, no one else's.
Face-off: Analytics-as-Apps vs. Analytics-as-Code
Century 21 Market Update: September 2015
> there is no governing body to determine whether you are agile or not

Tell that to agile advocates who are always quick to point out that when a project using Agile fails, it's never Agile's fault, it's always because the team didn't apply Agile correctly.

It's the text book definition of "No True Scotsman".
Interesting... as I have taken to giving the random LinkedIn recruiters two rates-- one an on site rate and one a remote rate. The remote rate is my normal rate, which is lower than the on-site rate which has a healthy have-to-go-into-an-office premium.

When you couple that with the higher productivity of remote work, the smart employer will let me work remotely (at least most of the time.)
I absolutely disagree.

There is no "True Scotsman" argument against Agile, IMO because there is no such thing as "true Agile". The best description I've heard of Agile is that it is the bare minimum amount of project management you can do on a project and still be successful. Beyond that, it's all about what works for each team. The entire f-ing point of Agile is that it's a generic framework you can adapt to many different business contexts.

But there are still common reasons Agile methodologies fail. I don't know how many of these are really failures of "Agile" or just common mistakes that new teams in general make. But it doesn't really matter, because the two situations are often inextricable from each other.
I'd appreciate the feedback and I'd try and make it more comfortable to read.
This sucks, but it's not accurate -- in both directions. Offer letters can get broken too, and legitimate offers don't always come in the form of offer letters.

I've both taken employment (including flying thousands of miles, one way, etc.) and offered employment on handshake basis, although usually with terms in email just so they're written down.

Big companies do offer letters via HR and some formal process, but there's no fundamental difference between email from an authorized party offering something. vs. a scanned PDF attached to an email. You need to show the elements of contract were met, but the form doesn't matter -- email is a big step up from verbal contract, which also exists.

The real rule is: don't do work for lying assholes. If you can't trust your counterparty, you need a lot of compliance and enforcement machinery, and that's usually well beyond what an individual employee can bring to bear.
I'm imagining snickering goats on the other end, uploading yak photos from a stock image website. =)
I should clarify - Microsoft was forced by their clients to do it. Amongst Microsoft's most important clients are governments, many of which demanded the use of standards for documents, like PDF for viewable documents or ISO/IEC 26300 for editable documents, which is the ODF standard. Some government institutions in Europe even moved to LibreOffice. Google does not have such clients for their online office suite. See: https://en.wikipedia.org/wiki/OpenDocument_adoption
Most of this site is extremely disingenuous.

eg: https://rime.co/@WarrenBuffett

"Created October 2015"

He's listed under "Featured Users"

You're apparently taking his profile image from Twitter, while also making it seem like he's a user of the site.

You're direct linking to his profile image here:

https://pbs.twimg.com/profile_images/3599636117/8468a03db84e...

And then manipulating the look of it. That's most likely against Twitter's terms of service.

I get what you're trying to fake in doing all of that, including how careful you were to frame it in terms of wording and appearance. It comes across as slimy.
MOSCOW+ESCORT+MILANA+-+Golden+Diamond+Escort
Can you talk about what kind of documentation will be released? Data sheet? programmer's manual? anything at all about the hardware?
So if the problem is too much demand, lets look at how to lower the demand? The answer to lowering demand is clearly to encourage preventative medicine over reaction medicine. Most of the cash cows in the US for sickness profiteering are preventable, heart disease being number one. I know that's not profitable for sickness profiteers but until we start to value health and well-being over institutionalized greed well never have enough money to take care of our health.

>He sacrifices his health in order to make money. Then he sacrifices money to recuperate his health. And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived. -DL
Show HN: Steeb, Just download the music you like
xombrero is my main browser. I like the minimalist, keyboard driven interface.
I recently relocated from Canada to Western Europe.

It is absolutely mindblowing to my wife and I how casually racist Western Europeans are. We have had numerous people we met for less than 5 minutes drop passing references to other nationalities and ethnicities (indian, muslim, black) in a derogatory manner that would never fly in conversation in North America.

Maybe I'm in a bubble, and all the friendly strangers I'm used to talking about at the dog park were also secretly nationalist, racist, and islamophobic in Vancouver. But somehow I doubt it.

Basically, it boils down to immigrants to Canada and US seeing themselves as Canadians/Americans first. I don't know what in the culture leads to that, but it does. Meanwhile I've met people in the country where I'm living that have been there for 3 generations, speak only the local language, but see themselves as exclusively the country of the origin of their ancestors. Maybe because it's only an hour flight away?

One only needs to look at /r/europe and see the awful shit that gets regularly upvoted to understand that Europe simply has not figured out how to welcome or embrace immigrants that are unexpectedly different from themselves in a way that is sustainable and does not self-perpetuate animosity.

Unfortunately I do not have any solutions for this, only my own anecdotal observations.