skysight-inc/HackerNews huggingface dataset:
> I doubt it, generators and motors operate at 99% efficiency. Do you have any reference?

A locked up torque converter or an engaged clutch is basically a solid steel bar. You're the one that is going to need to provide sources that show an electric generator and motor, operating in series, are 99% efficient across a wide operating range. (you won't find that that's true).

>That assumes that engines are so small that they operate at 100% under normal conditions. This doesn't have to be the case, electric engines are so small, you can have bigger-sized engines where one single engine can use all the power. The nature of electric engine is such that the loss of efficiency by doing this is minimal. Plus you need to do this only fractions of the time, so the engine doesn't have to be designed to operate in high power mode at full duty cycle.

Look up the efficiency of electric motors running outside of their optimum power/rpm ranges. Also, you basically just said that you can get around a percentage problem by increasing the coefficient, which kind of misses the point. Also, if you're going to put four motors, you're probably doing that because you want to put them in the hubs, (if you're putting them inboard, you'd just use one or two motors and put a differential in there, like Tesla does), if you're putting motors in your hubs you want the smallest motors you can get away with, because larger motors increase unsprung weight.
No, the problem is that these companies don't pay the fair price (i.e. what their unvestors stand to lose if knowledge of this vulnerability is disclosed) to the researchers. Personally, I don't feel any kind of moral obligation to essentially sponsor the investors of these companies (if I were a security researcher).
It's quite confusing, the del operator means different things in each term. del of p is just the gradient of the pressure, but the convective term is more complicated. This may help [1]. The key part is:

Generally the convective derivative of the field u•∇y, the one that contains the covariant derivative of the field, can be interpreted both as involving the streamline tensor derivative of the field u•(∇y), or as involving the streamline directional derivative of the field (u•∇) y, leading to the same result.

[1] https://en.wikipedia.org/wiki/Material_derivative
We were allowed to do multiple laps. I stopped attending the (non-mandatory) course after I saw that the other teams were no challenge and some even had problems to just follow a line.
To be fair, I've never seen anybody with the P(Success | Number of Founders) data claiming it goes either way.

It is always the much easier to discover P(Number of Founders | Success). The entire "you must get a co-founder" movement is based in it.
Maybe limit DNS queries with long answers to TCP. DNS servers speak both TCP and UDP. With a UDP query, the source address can be faked, which causes the results to be sent somewhere else. With TCP, the attacker can't make it through the TCP handshake with a fake source address, because the attacker isn't getting the replies.
Jacques Lacan – The shrink from hell
Nice article. Two incidental notes: (1) Siobhan Roberts is an engaging speaker, if you get the chance to hear her speak, it's worthwhile. (2) This reminds me of http://calteches.library.caltech.edu/51/2/CargoCult.htm .
The Challenger Disaster: A Case of Subjective Engineering (1989)
The stability of non-LTS releases is comparable to somewhere in-between testing and unstable in Debian, despite of what Canonical wants everyone to believe.
It is absolutely the interface to excel that causes errors. I can take your excel spreadsheet, format cells, add things, change a reference and generally fuck it up and hand it back to you and you would never know. Whereas, if I change a text file then you can see what's changed. Similar errors are much less common in a programming language.d
Stranded on a remote Pacific island, they wrote ‘SOS’ in the sand
Those recommendations together almost sound like "write C in C++".
If I recall correctly although gnome uses a binary config file format not terribly unlike the windows registry there is a way to export and then import it.

Even so I don't think this is 100% proof against things changing then again the same CAN be true of text configuration files.
Is this an actual thing I have to worry about? Oh noes! The Russian hackers are gonna kill gma unless I pay 'em all the bitcoins!
Wushu Watch: Ki, Chi and Everything Between
Is it LSD that makes her more creative, or the fact that that she thinks LSD is making her more creative that makes her feel more creative?
That makes sense if the website can reach and engage many more customers.
Sure, as long as you're skilled in both the technical side and the business side, and have enough free time to do both.

Seems to me that very few people can check all three of those boxes.
4WD/AWD are almost never necessary in USA and Europe today, to the extent that, if you buy 4WD/AWD you're likely suboptimizing and even taking a risk (for your drivers who aren't familiar with the quirks of 4WD/AWD). As Saab has shown for decades, FWD will get you almost almost anywhere a 4WD/AWD will in bad weather.

But sales of 4WD and AWD cars have been a boondoggle for the auto manufacturers. Cost, complexity and maintenance are significantly higher: often you must "fiddle" with them, woe to you should you damage them due to bad judgement. They reduce mileage, increase car weight, and reduce reliability.

I prefer a RWD car for most driving, since it handles better and I'm never climbing bare hills or plunging through swamps, but I was raised on oversteering go-karts.

"All Wheel Drive Does Not Make You Safer":
http://www.mrmoneymustache.com/2014/12/01/all-wheel-drive-do...

"The Myth of the All-Powerful All-Wheel Drive:"
http://www.popularmechanics.com/cars/a3091/the-myth-of-the-a...

4WD/AWD safety - Is 4WD/AWD safer on snow and ice?
http://www.4x4abc.com/jeep101/safe.html
That's a great idea, and far more likely to lead to real change than simply informing the company. Wipe away millions of the CEO's equity, then watch how quickly it gets fixed.
Edit: Fixed
Outside wheel wants to travel more than the drivetrain so it would slip, not spin correct?

The inside wheel would spin if the outside doesn't slip.
My Experience Pivoting My Company
Why not both? Progress is usually the important part. Offering both is expensive; but going all in on a single approach is dangerous in the failure case.
Show HN: A next gen front-end framework with lots of editable examples
Isn't it strange in 2016 that its considered ok to break at all?
Is there anything in ECON that's good then? I'm thinking 70% of first-year ECON would be bullshit, but surely some ideas about demand and supply are useful. Are you an economist? Or did you study economics? I'd like to publish a book in the spirit of "Economics, only the good parts," and would be interested to hear your opinion what to include.

For example, I really liked this class: https://www.edx.org/course/principles-economics-calculus-cal...
What the f..k. Thanks for that link, a jet engine?! That's crazy. But it's the "awesome" kind of crazy.

And the CO2 values... wow, how is that possible? Burning a defined amount of fuel should always produce the same amount of CO2?
I dont think it is hard for outsiders to get in. I am exactly one such outsider.

It is true that being in a good lab helps a career, but these are nepotistic organizations. Join one as an undergrad to get experience then apply to one as a grad student or a paid research specialist. Ive seen that 100 more times than family members of colleagues.
I could've sworn I've seen people who work in the financial and maybe data science industries who've praised Excel to the heavens on HN. Like on the same level as Python, R, etc.

I don't work in finance (or data science really) so I can't comment, but it seems merely a tool to me.
Scores are available via the API... you should use that.
We're all here to learn, if you've got some insight into what the article got wrong then why don't you school us?
I'm no mathematician and this might be way out of my league, but I've wondered how Gödel's incompleteness theorems come into play if Mathematicians are using proof assistants to verify their mathematics.
In California you are legally required to either have chains equipped or a 4WD vehicle with snow tires under R1 and R2 snow conditions:

http://www.dot.ca.gov/hq/roadinfo/chcontrl.htm

It doesn't matter what the studies say, 4WD is legally recognized as safer than 2WD in California.
I'm not sure "serendipity" is quite the proper term for a "nicely timed" death?
> It's definitely going to become big business

I almost hope that's going to happen. Why? Because absolute security catastrophes seem to be the only way for companies to start taking security seriously enough. And I'm not just talking about your random IoT/medical device company here. I mean big companies like Google and Microsoft, too.

Google became more serious about security and encryption when it got hacked by the Chinese government. Then against after it discovered that NSA was inside its internal networks. And then upped its game for Android once Stagefright vulnerabilities came to light.

And how many millions of viruses did it take to convince Microsoft to move to at least a security model/architecture like they built in Windows Vista/7?

So perhaps others profiting big from discovering vulnerabilities in companies' products, and then shorting their stock is what's needed for these companies to significantly increase their security across the board.

Is it ideal? Of course not. But if that's what it takes, then so be it. They could go nuts on the security front today, but they don't. They're waiting for the security disasters to happen first.
Oh there's an absurd amount of concrete things to criticize about this article.

I just don't see why I should be giving free editorial services and in effect encouraging what I consider to be blog spam infecting a site I love.
Yeah no, if people who were decided by this paper took it at face value without checking the numbers made sense, it's not an excel ui's fault. As for the others, they would have picked that policy choice with or without that paper.
From the 1916 article:

"These teachers knew better than any one else how much valuable time was wasted in getting by heart long lists of words."

This is perhaps an interesting argument for simplifying spelling. Namely to give en-US children a competitive edge on the world education scale by increasing the amount of time that is able to be devoted to other subjects.
8 Worlds best superb sentences
You might like Sheaffer's "The Twenty-Six Old Characters", c. 1947. It touches a bit on the progression of language, but it's really about writing instruments. It culminates in explaining Sheaffer's "Snorkel" mechanism, which was probably the most novel and complex pen system ever designed. I have several and love them :)

https://youtu.be/1xUDehNvbrE
Who will Trump bring physical harm to except ISIS?
Oops you are correct
Locomotives are used on railroad tracks. Adding weight does not matter.

Cars generally suffer quite a lot if you add significant weight: both performance and fuel economy will be hit. That is why locomotive solutions are not very suitable for cars.
>If they consitently do worse than the ETFs based on the same indexes with a similar risk profile, the market will eventually punish them for under-delivering.

The problem is with consistency and eventually. Definition of closet indexing is active share below 60%. These funds are not consistently worse if the observed period is just few years.

Since actively-managed funds usually perform worse than index funds in long term, closet indexing should be able to keep up with actively managed fund with same costs.

Selling funds is mostly marketing. Asset management firms have several funds and they sell the one that randomly performs better than it's benchmark in some short period of time (1-3 years). Very badly performing funds are merged into other funds and new funds are created.

Research shows that 15-20% of European large-cap funds could be labeled as closet indexers and 15% of the net assets in equity mutual funds sold in the United States are closet indexers.
Stop Trying to Write Your Masterpiece
FTA:

> That’s why AWD ... helps you safely navigate both inclement weather

This is certainly how AWD/4WD etc is marketed to consumers, but it's worth remembering that every car has four wheel stop. Better acceleration really just helps you hit that snow bank first.

(Also this article loved to misuse the word "torque" when they really meant rotation or energy. Sigh.)
Oh, almost forgot! (can't edit so I'll reply to myself) - there's no way for you to set a fixed seed using the built in random number generator. REALLY hope you don't need to reproduce your results because it's essentially impossible. Again, it's technically possible to implement your own Lehmer random number generator within Excel and rely on that and again VBA is always and option, but let's be realistic. The people who understand the need for setting fixed seeds, can implement their own random number generator, and/or are comfortable actually programming aren't going to using Excel anyway (willfully at least)
Hmm... I'm not sure I see this the same way. The impact on the price by a single investor shorting the stock (even a leveraged hedge fund) will be minimal. Furthermore, the only way for said investor to actually make a profit is to make other investors agree (i.e. to essentially anticipate their actions), so they do need to publicise the vulnerability. Still, they're taking a risk because other investors might not see the vulnerability as critical or otherwise worthy of a lower valuation.
There are dozens of load boards and DAT has the largest by a huge multiplier - what's cargomatic doing substantially differently?
This is absolutely false.

I live in Utah where we regularly get snow measuring feet deep. Driving up the canyon to go skiing, or doing anything in the state during winter or in all the wilderness, it is required by law to have 4WD.

All over the west there are roads that are impassable without 4WD. I use it all the time.
Debian Testing doesn't break your machine every few months.
The problem of the outer wheel going farther during a turn also occurs with trains, and trains do not have differentials to let the wheels have different angular velocity. On a train, the inner and outer wheels have the same angular velocity regardless of turns.

How trains accomplish this is interesting: http://jalopnik.com/5820296/how-trains-make-turns-without-di...

I'm linking to Jalopnik, which embeds Richard Feynman's video on train turning, rather than directly to the video because there are some interesting comments on the site. In particular, see the comment from railroad employee "Gonemad" about how they have a system that automatically greases the wheels before turns, which seems rather counterintuitive at first.
Why does he not simply read a tutorial on how to pull in data from a database?
Why does the sex of your employee matter and why should you hire on that merit?
How to Get Started
Invite your friends to your team and work together
We are currently building the Charme API specification, a JSON based API format that allows to build RESTful and RPC APIs, with support for result streaming and synchronous as well as asynchronous communication.

We just finished the core spec and are currenrly working on protocol specific specifications and the core extensions. A lot of work, so that we hadn't any time to think about a logo (only a temporary one, to not to be a Twitter egg, see @CharmeAPI).

Would be great if we could get a professional logo this way! More info: charme.org

Thanks!
To user: phpnode that replied to me. I can't reply directly to you but that's a fair enough point.

I was avoiding doing so before because I didn't (and still don't) think this article is even deserving of being picked apart.

I would be happy to do so for the sole benefit of users here though. Just give me a little time to get back from doing some errands and I promise I'll clarify my grievances with the information in the article.
Seems like you can formulate it using a proof assistant. See http://www.academia.edu/4271278/A_Mechanised_Proof_of_Gödel_...
4WD/AWD definitely helps in some day-to-day driving cases. One example is parking in a foot of snow in NYC. Otherwise you have to spend an hour digging. Another example is getting out of a driveway in the morning when you are late after a snowstorm.
While he didn't succeed in getting the FTC to sue them (which would almost inevitability lead to the company being shut down), they did end up passing reforms that will cripple the business if it is indeed a pyramid scheme. Not sure how it affects them outside the US but I think HLF is going to die over the next few years within if it can't make much revenue from recruiting.
Tangential note - The data-lockin is exactly why I don't use Slack or that litany of SaaS solutions out there. Even with Oracle or MS SQL Server (or even Azure on-premises), if I needed to I could bulk copy my data out.

Open source + charging the enterprise a lot for customized solutions and/or paid support is a fantastic model and I wholeheartedly stand with your model.

(N.b., marketing strategy -- capitalize off the fact that everyone's data is being tapped now - e.g. Dianne Feinstein, in charge of the Senate Intelligence Committee's, had her staffers machines hacked - Apple is 100% hackable too (see: the San Bernadino FBI debacle) and offer secure comms at Blackberry Enterprise licensing pricing. I'd estimate > 95% of F500 is MS based/LDAP based on my experience. They're used to paying tons of money for Remote Desktop/AppX/Citrix/Exchange/whatever seats. You could easily get away with $60/user/seat + install fees + 50% for platinum support.)
What's wrong with the current logo? It looks great!
> It is not surprising because with an open source program everyone who can program can fix such issues, while with Microsoft you are at the mercy of the likely overworked Excel team.

Yep, that's the theory behind open source applications. The reality is that in a company, people will prefer Excel because Microsoft is a point of contact that can work with, blame, or yell at to fix because you're paying them. With OpenOffice or LibreOffice, sure, you could have your engineering department fix it, or they could work on the software you need for your business.
No. Software breaks. The question is when, and if it's fixable. With Arch, I find the answers are "soon" and "yes".
Ask HN: Early signs that a company is failing?
It's not an "in-joke". It follows conventions set by the Python language:

- "def" instead of "define"

- "cls" instead of "Class"

- "sys" instead of "system"

- "os" instead of "operating_system_facilities"

- "ntpath" instead of "windows_path_names"

- "abc" instead of "abstract_base_classes"

Python aggressively abbreviates almost everything in common use. If it were in the stdlib, perhaps it would be the built-in names "attrs" and "attrib" rather than having dots in them, but the names would indubitably still be very short.
Not quite. All AWD Subarus (i.e. except the BRZ) have one output shaft out of the engine, 3 out of the transmission/transaxle (2 to the front tires, 1 to the rear diff), and 2 out of the rear diff. Torque split varies between models and years with most near the 60/40 you quote, but the only one (in the US, anyway) that can send 100% torque to either end is the STI with DCCD on full lock.
Like Rust: https://doc.rust-lang.org/book/testing.html ?
Minit, busybox init, s6, and rc.d are all simpler. Familiarity, on the other hand...
Personally, I think the buck has to stop somewhere, and it's more important to be united in a vision than to be right, or to be struggling for what's right. At the same time, it doesn't work when the person with whome the buck stops is authoritarian. I respect someone who is wrong who at least has a reason for being wrong based on their perspective of the situation. But I can't abide someone who is wrong and who forces the startup to do the wrong thing because they have the authority of position. I find those people are not going to be predictable in the mistakes they make, and more importantly the will not recover from them.

I asked the questions because I think you might be onto something, a way to split things up and have genuine founders without the "everyone gets 1/n of the equity" equality that leads to strife.

Him putting in the seed round and other contributions necessary to give him the weight that makes it a valuable deal for everyone also seems to be a key element in your situation.

Thanks for sharing!
No way, not data science. How are you going to load in millions, possibly billions of individual numbers?

With finance there's a lot of things that seem like good fits, but only if you keep them small. Something like a personal budget is fine, where everything fits on a screen.
I assume the CO2 values factor in the electric only range.
Do you? I can't dig up anything particularly good, but what I do find indicates in the mid-90% for practical electric motor efficiencies.

This says 85-95% efficiency for the motor in an EV: https://matter2energy.wordpress.com/2013/02/22/wells-to-whee...

This says 93% for a brushless DC motor: http://electronics.stackexchange.com/questions/58236/why-doe...

I found a bunch more of similar quality searching for "ev motor efficiency" and similar.

I'm not particularly satisfied with those, so if you have something better, I'd love to see it!
I'm not sure this is exactly what you are asking about, but Rust does support testing right in the language. You can add #[test] before a function to make it a test function (tests and regular functions can live together in the same file).

https://doc.rust-lang.org/book/testing.html
You're exactly right. American citizens should never have to compete with foreign nationals for anything.
Jesus, your projects are massive. Does your job involve working on these or are these just side things?
> Emacs takes tens of seconds up to a minute

Not in 10+ years has this been true, at least for me.

> You start Emacs and hope to never shut it down.

It's not hope for me. I start emacs when the machine starts and quite literally never shut it down. Not because I don't want to start it up, but because without it running, I don't get work done.

I even generally have a copy running in an (again) always-on tmux session, for when I login to a box via ssh.

I feel this "big bloaty" anti-emacs argument really lost its legs ~1989; I'm not sure why people cling to it unless they have a vested interest elsewhere.
That only works for content that is statically (absolute) positioned?
AWD absolutely gives you more control of your vehicle in icy and snowy conditions. No, they don't help you stop more quickly, but they do aid in preventing fishtailing, and in being able to accelerate when you choose to, and maintain control of your car. Dedicated snow tires are a bigger factor, but the best option is to have both AWD and snow tires if you will be driving in snowy conditions on challenging roads. All of this make you more able to safely control and operate your car. Also you're far less likely to get stuck or slide from a stop.
I don't know what your definition of USA is, but here in eastern Massachusetts I have had spin outs on regular roads while driving FWD cars in snow. Ever since I started driving an AWD vehicle, I had zero skids/spin outs in similar conditions.

So, my personal experience is quite contrary to your opinion. In fact, we are buying a second vehicle now and one of the critical requirements is 4WD/AWD, esp since we don't know how much snow the coming winter will bring.