skysight-inc/HackerNews huggingface dataset:
There's a distinction to be made between many different players in 'hft'. You have market makers, latency arb, plain old short-term quant trading which all provide different sorts of 'economic value. Most players are running a mix of some to all of these strategies - for example, in options, fast trading on spot moves is really some weird mix of everything from latency arb to market-making to long-term option pricing.

One could argue that pure latency arb (what flash boys portray as hft) is fairly useless since it's just trying to catch stale quotes that market makers would move otherwise, but that's a very small portion of the industry.
How did you reflow the UI when users resized their browser?
I'm equally annoyed at many of those but Gwynne Shotwell is fundamentally an interesting person who's integral to the workings of SpaceX and it was good to have an article about her.
Except that telemetry is no open-ended conversation where I can present suggestions.

It's more them asking specific questions for preexisting objectives - and my browser answering them, often without me even knowing the questions.
One trick used to push profits offshore is to use "transfer pricing": transactions are made with a subsidiary based in a tax haven (either part of the same legal entity, or a partner/shell company used to the same effect), with prices skewed so that the offshore company comes out with a huge profit. (Googling around, I found http://repository.essex.ac.uk/8098/ which seems to my untrained eye to give a reasonable overview of this).

For example, the subsidiary company might have ownership of a trademark, and the onshore company pays a ludicrous amount to license that trademark. The accounts show this as a cost for the onshore company, lowering its profits; whilst the offshore company makes a large profit. An example I've come across (but can't find/verify them at the moment) is pencils being bought from an oversea office for thousands of dollars each.

If corporations were charged based on location of costs rather than profits, as you suggest, I can imagine this being used the other way: almost all of a company's assets, from across the globe, are funnelled into an offshore division, in order to pay a ludicrous amount for some trivial local item (e.g. rent and security guard for their empty 1-room office).

PS: I think these sorts of tricks are the reason the article keeps using the phrase "tangible assets", rather than just "assets".
> What's not ok is to then proclaim "Calorie counting does not work".

It's literally true in the way intervention effectiveness is usually measured, as imperfect execution is included as a source of failure.
That’s part of the fun! You can write to normal disk too, then mount the rest for data. So it’d leave 1.999500 TB free. ;) Ok maybe I just like extremes..
C compiler quirks
Here's a great explanation from Jen Simmons that really helped me understand the differences and respective strengths and weaknesses of each:

https://www.youtube.com/watch?v=hs3piaN4b5I
Why Discord Is Sticking with React Native
Can't wait until they want to build a new hospital and they are barred from adding a cafeteria.
How to set up multiple Twitter accounts using only one Hotmail/Gmail address
Data USA
Documentation of major products has definitely improved. As has tooling for producing and consuming it.

When open source was getting rolling in the 90s I don't remember it being nearly so polished.
BEAM's default allocator settings will allocate often. It's just how the VM works. The erlang allocation framework: http://erlang.org/doc/man/erts_alloc.html is a complicated beast.

We were able to simulate this failure condition synthetically by inducing memory bandwidth pressure on the guest VM.

We noticed that during certain periods of time, not caused by any workload we ran, the time spent doing malloc/mmap would 10-20x, but the # of calls would not.
It's now at what the price was at 3 months ago. A lot to lose in one day though.

It looks like a particularly large investor just fat-fingered the sell button.
Yes we feel fortunate to be near Stanford. During the plasmapheresis procedure our daughter was intubated for 5 full days, which was necessary due to her psychotic state. However, when she woke up she had to endure several days of dealing with fentanyl withdrawal (180+ heart rate, severe hallucinations, etc.). After getting through that, her psychosis was gone but her OCD lingered. In our case the PEX wasn't quite enough so they did several ritux shotx. FYI - the latest thought is that rituximab is most effective when combined with methyltrexate, but not sure if the data on that have been published yet.

Through it all, I've learned much more than I ever wanted to know about horrific medical conditions, the latest research on systemic inflammation, psych meds, navigating medical insurance claims and who my real friends are. As an app developer, I tried to do my little part by releasing an iOS app to help track it all, but that doesn't feel like enough. Now I have some degree of normal back in my life, I'm looking into other ways to reach out and support those going through what I did, so feel free to reach out if you have any suggestions.
Do most people realize that when they send in a DNA sample whether it's to 23andme or ancestry.com that those companies sell your DNA test to drug companies?

Anyone ever done one, do they state in the fine print that's what is happening?
http://archive.is/B9klj
Same thing played out with Amazon. The embedded 7-9% sales tax advantage gave them a massive price advantage (even if the headline price is the same, the price the consumer pays is less) that retailers couldn't keep up with.
That's an interesting problem, because Netflix is unable to achieve any sense of real profitability in their model either.

Netflix is pretending to be profitable, while they bury themselves massively in debt to pay for content (ie they can't properly fund business expansion out of operations after 20 years). A particularly inherently unsustainable model when you've got single digit margins.

Here's the Netflix balance sheet the last four years:

2014: -$914m; 2015: -$2.08b; 2016: -$4.6b; 2017: -$6.7b; 1Q18: -$7.3b

They took on on roughly $5.7b in new debt in three years, at an accelerating clip, versus combined earnings of $850m. While they might be able to sustain that for some time, it's a dead-end model: eventually the whole stacking scheme gives out, subscriber growth tails off (plausibly beginning now), and you've got a mountain of debt that costs you ever larger sums of interest and limits your ability to maneuver. Right now their annual interest costs are eating the equivalent of a full quarter of their profits. They'll more than double their debt in the next few years by necessity to keep up the content spending, and their interest costs will ballon to a billion dollars per year.
It's easy to say X part of a system is "neither predetermined nor random" within a system defined as open (like a computer program or even a machine with a dial that can be set by an operator).

When a system is closed, things become harder.

Chaitin's number represents (very roughly) the structure of any complete mathematical system and it can be shown to be random in the sense of Kolmogorov.
I would like to see Spotify become healthy and profitable. There is no reason you shouldn’t want more competition but the odds are against them. The last 18 years are full of failed and failing music subscription services - from PressPlay and MusicNet back in the early 2000s, to Zune, to whatever the service that MS launched with MTV, Napster 2.0, Tidal, etc.

As far as Roku, that’s not a great example. I have 3 Roku TVs and a Roku stick, but they definitely aren’t the model I prefer - “I give you money and you give me stuff and leave me alone”.

For starters, the shortcut buttons on their remotes are hardwired and branded to whoever gave them the most money this month. I have one with a Rdio button (a dead service) and another with a shortcut to CBSNews.

Then half of their home screen is taken up with an ad. When you sign up for an account it’s a Godaddy style up sell.

They make money by both tracking your viewing habits and subscriptions that are bought through their service.

The Roku interface is slower than my third generation AppleTVs not to mention my AppleTV 4K.

The Roku’s saving grace is the much better remote app and private listening.
Options are mostly the same. You can easily switch out the two compilers in most build systems. Make: make CC=clang CXX=clang++. Cmake: cmake -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++. Autoconf: CC=clang CXX=clang++ ./configure.
>putting videos in the form of mini documentaries and puff pieces in curated playlists and not adding a way to auto skip them.

That sounds super annoying.

I haven't had any of those? Are they region specific?
I have reached out, just now, please begin the discussions with us asap because we are in the middle of going with Emburse and would consider this instead.
All apple music did was ruin the interface for my own mp3's on my iPhone and push me to Spotify completely.

Apple thought pop-stars and EDM chart toppers and anyone associated with BEATS has good taste and to promote the playlists. It is top40 shlock.
It is empty, but its filled with "Space Grease"

https://www.theguardian.com/science/2018/jun/27/space-is-ful...
"Literally stealing ... technically legal".

I think at least one of those four words must be incorrect or poorly chosen.
but that just means there is more logical (predetermined) action 'out of our reality' The input of a program is predetermined by the physics that drive input to reach the program. (or it is from nowhere and is truly random, though I doubt this is the case)
शानदार फीचर्ड के साथ भारत में लॉन्च हुआ Honor 9N, जानिए कीमत और स्पेसिफिकेशन
If the topology is simple then managing static routes can be way easier than doing dynamic routing correctly, otherwise I'd start looking at BGP. Your best option right now in terms of software is FRR or bird.

But first you should understand dynamic routing and decide if it's right for your use case.

https://en.wikipedia.org/wiki/Dynamic_routing
Why is no one using (or heard of) onlinecheckwriter?
I've only only had my hands on Onlinecheckwriter for one afternoon as of typing this, so take with a grain of salt.

In my opinion, OnlineCheckwriter is on the same levels of quality to clearcheckbook and better than checkeeper. Why is no one talking about it here? clearcheckbook and checkeeper are often suggested here (and feels like the only two budget software/web based suggestions). What makes onlinecheckwriter so great for me is the following (which I just copied and pasted from their page):

Check printing, check registry , check draft , deposit slip check mailing, mini accounting, inventory everything in one place
Abstract and Concrete Categories: The Joy of Cats [pdf]
Two thirds seems low
"...the ongoing contest between Obama’s realism and the hopes of people like Rhodes that he would deliver lasting change. The tension between what is and what ought to be..."

Captures something that I observed in a number of people and it probably has much to do with the sense of disappointment expressed by many toward Obama's term.
Also why uber did their own credit card, gotta imagine. Using that data for where people are going and where they are ordering from (UberEats) has got to be extremely valuable.
Source about Walmart?
It's pretty bright, but usually appears too close to the Sun to be seen. It usually goes through 3-4 periods per year where it can be seen after sunset (and similar for periods before sunrise). You can use a planet rise and set chart to find periods when it will be most visible. Shameless plug [1] for an Android app I wrote that does this. Unfortunately we're just now leaving a period where it could be seen after sunset. You'll be able to see it before sunrise in lat Aug/Sep, or after sunset around late Oct/Nov. It will be easier to find if you use binoculars first, then try with the naked eye once you know where to look.

Another interesting thing now is that you can see Venus before the sun sets. If you've never seen it before, find the location one night well after sunset, then look in about the same place the next night a few minutes before sunset. It's currently getting closer to the sun, so it will get harder to spot before sunset each day, but will remain obvious in the night sky until late Sept.

[1] https://play.google.com/store/apps/details?id=com.principiap...
This book isn't a text book, and doesn't want to be, but for Fourier Analysis, "Who is Fourier? A Mathematical Adventure" provides an introduction to the subject that, IMO, few books can match: https://www.amazon.com/Who-Fourier-Mathematical-Adventure-2n...
JavaScript Tutorial for Absolute Beginners
How do I re-learn math up to a level just before say a US undergrad in Math?

I hated math when I was in secondary-school, but loved computers so did a computer science course which was heavy-ish math in its final year.

Passed that course and now am in a pretty decent programming role, but I feel like my maths is just built on such a shaky foundation that I maybe could improve my programming and problem solving if I solidified the base.

Is there any one text book I could get which would teach me up to that level of Math?

I suspect no, because Math is so broad, but generally if I could get an entire pre-university schooling in Math I would be very happy.
> MRI's and CAT scans are costly machines, especially compared to 15 minutes of a doctors time.

I know the machines themselves are very expensive, but what are the costs to run a test? Does it draw ruinous amounts of power when running, or are there expendable materials involved?
I'd love to learn more about this! I hate the way this sounds, have not encountered it, but keen to share my distaste with Spotify by reaching out to them if this is in fact true!
> Strictly speaking you're right, it's not really about kernel threads.

I'm not particularly interested in being right or wrong, but, rather, improving understanding.

The reason I made the (strict) distinction was that the whole discussion has been about kernel-supported file locking. Anything called "threading" outside of the kernel seems inapplicable, no matter how closely related conceptually or in practice.

Of course, I may be missing something, such as if userspace/green threads both significantly preceded kernel threading support and motivated its implementation (presumably by benefiting from it).
Takeaways from Alexa Dev Day in San Francisco (July 25, 2018)
I appreciated it because it's correct and was willing to reject the pop cultural view that your value depends on your skin color rather than the content of your character.
No, I don't think we are overthinking it.

I have a genetic disorder. The standard medical advice is to eat a high fat, high calorie, high salt diet to accommodate my disorder. They routinely recommend "junk food" to fit those parameters.

I went the opposite direction. I got really fanatical about what kind of fats I eat, the quality of the salt I consume and other details.

Over time, I shed a lot of weight without intending to and without counting calories. So I think, yes, for some portion of the population, it's absolutely more complicated than "calories in, calories out." And for those folks who have struggled with their weight and just can't seem to lose, they are very much in need of some new hypothesis that might solve their seemingly unsolvable conundrum.
>Apple Music is the only one I truly dislike

The same here, being half an Apple Fans I would have put up with minor annoyance, in the hope they will improve one day. But no, it was another iTunes.

They may succeed in US or EU, but I would bet $100 they won't succeed in Asia + Japan Region.
> A nit: is it really true that C sections are primarily for high-risk pregnancies?

C-sections are very disproportionately used for those, though perhaps not primarily; in relation to the risk statistics upthread, is the same basic impact. You cant just compare adverse outcome rates for C-section and vaginal birth without taking into account factors associated with adverse outcomes which also make C-section a more likely event.
The one thing that frustrates me with both Apple Music and Spotify is the lack of information density; it's really hard to use for people with large libraries or who depend on extended album metadata. It's particularly problematic for classical music.
what? read some OS books
Also on the HN front page today: "close to 40% of multinational profits were artificially shifted to tax havens"

https://voxeu.org/article/missing-profits-nations

What percentage of US dollar transactions have no economic value?
Well, what's stopping men from deadlifting 800lbs? Because only a tiny fraction of men can deadlift 600lbs (the women's deadlift record), let alone 800lbs.

Will a man hold the deadlift record? Most assuredly. Does this in any way matter? It sure doesn't seem like it does.
Correct me if I am wrong but reading his wikipedia page makes it look like he was acting as a lawyer for clients rather than suing on his own behalf.

https://en.wikipedia.org/wiki/John_Edwards
Drawing Outside the Box: Precision Issues in Graphic Libraries
I am a big fan of RSS feeds but have never used the built-in reader, but the add-on brief. Highly recommended to follows blogs, reddit or any kind of forum:

https://addons.mozilla.org/en-US/firefox/addon/brief/
Bay Area cities are cracking down on free food at tech companies
No merchant agreement prohibits the merchant from pursuing the purchaser through collections or small claims court if a chargeback occurs or the charge is declined (in the case of a recurring subscription).

https://news.ycombinator.com/item?id=17468176
duplicate: https://news.ycombinator.com/item?id=17609906
LikeNEWPC Disabled Computer Repair for Novices
Is Google Play Music anything more than the audio from YouTube uploads? Music uploads on YouTube can have wildly variable audio quality.
Glad to hear you like it! We’re looking for a range of customers who have various use cases and experience levels with issuing before we’re ready to make this available more broadly. (Sorry I don’t have much more in the way of specifics to share here, we’ll do our best to get back to you quickly.)
I'm pretty sure that somehow everyone who visits the site is paying for it.
I'm missing how this is an example of the bad behavior suggested. It appears to be a normative prescription of how NGOs should be.
Just because usage is down from peak doesn't mean that scaling isn't a problem. Bitcoin does support slightly more txns/sec than it did a year ago due to more widespread adoption of SegWit.

Lightning network also has orders of magnitude more usage than it did a year ago.
This is very unlikely just when amd's making them panic with super competitive ryzen procs
Please post your analysis, I'd love to see a more in depth one.
How 'bout 1000. 10000? Now were just arguing numbers. Don't forget the opportunity cost of unneeded treatments using resources that could have "saved" others as well.

We're taking many paths but ending up at some sort of rationing in the end. There's no easy answers.
Is there a large part of the world I'm ignorant of which considers olives and mushrooms to be breakfast ingredients?
Map of Bitcoin RPC API calls across versions
No, but the initial investment does need to be recouped. The machines can cost into the millions.
Phasing Out Help Scout’s Free Plan Pushes the Development of a Free Alternative
Grid suffers when you deal with things of unknown variable height and unknown number of child items.

I use a mix of flexbox and floats to achieve any desired layout for RWD

Grid only has 87% browser support
Aluffi's book switches to the language of category theory way too early. The best introductory yet "serious" book on abstract algebra is A first course by Fraleigh; for topology, the book by Munkres is at the same level.
The previous story was about Google's Cloud Build without any mention of GitHub, and the discussion you linked has comments bemoaning the lack GitHub integration.

This story is about GitHub's integration with Cloud Build. I considered the news interesting and upvoted because it answered the questions posed by previous comments.

Do I now need to be concerned about being banned when I upvote a story on your site?
This source seems anti-natural from birth to breastfeeding.

Medicine can certainly help improve things but if you've been through the birth process multiple times it's clear that doctors try to steer you towards C-section.

Several of them have confided to us that it's primarily because of insurance. The hospital procedures want women in C-section for a few reasons:

1. The procedure is expensive (surgeon, anesthesiologist, etc.)

2. The procedure is fast (30-45min) and can be scheduled allowing the hospital to deliver more babies with less staff

3. The recovery period is longer (2-3 day recovery period as opposed to 8-24 hours for natural birth) generating revenue for longer while only being care from relatively inexpensive nurses.

Sure, there are many times when C-section is appropriate and has saved lives, but it's currently being over prescribed because of hospital guidelines that doctor's need to follow or risk malpractice liability.
Can you explain for example how can i update an app like Ghost which is of 2015 version atm. Is it even possible?
As others have noted, a survey isn’t a good indicator of quality, as it has more to do with what people learned from.

An approach I have used in the past: given a field F, find universities best known in F, and see what textbooks they use in their courses.
Why Amazon Can't Match Microsoft in the Cloud: 10 Insights from Satya Nadella
Definitely short-term right now. If I made a SDE's salary instead of a SDET's salary and didn't live in a high COL area and didn't have to support a parent, I'd be more inclined to value long-term savings. Objectively, planning for the long term is better than planning for the short term, and I'd like to actually make enough money to plan for it, but I gotta make do with what I got for now. I do have a 401k via my job, and my credit is good, but nothing else.
Clickbait antidote: "IT spending that goes into hiring developers and creating software owned and used exclusively by a firm is the key competitive advantage. [...] Today’s big winners went all in"
When a Stranger Decides to Destroy Your Life
Check out Revolut: https://www.revolut.com/?lang=en

They have virtual cards as well as a disposable one that changes number every time you use it online.
Setting aside whatever political and cultural pressures there might be to maintain the status quo, this isn't just a measure of time, it's a measure of units of imperial reigns. What does it even signify if it doesn't roll over when a transition occurs?
Blair?

Allegedly Orwell named Room 101 after a meeting room in BBC Broadcasting House that no longer exists.
Where is this ridiculous idea that you need to have free will to make choices coming from?

Free will is incompatible with the concept of choice, because all choices are bound by physical constraints. How do you make a choice without any constraints? The best you can do is random.

Think about any of the choices you made today and think about why you made them. When you take all the inputs into account, most of your outcomes are predictable or random. There's no room for free will when you start looking closely.
I would have guessed about 100%.
Flash websites could have a back button. Maybe it wasn't quite as easy as putting in a hyperlink, but it was still pretty easy to configure.

Not arguing with you about the rest. As a web developer I still haven't made a website in the last 5 years that was as visually impressive as my Flash projects from before, and sometimes I miss the visuals....

But people forget that the AWESOME intro that you wait two minutes of loading to see... is only cool the first couple times. Many many people where losing 5 minutes of loading time, just to visit websites that they used EVERY day.