skysight-inc/HackerNews huggingface dataset:
> That being said Tesla has improved crash safety over what decades of safety engineers could do so maybe there is always space for improvement.

Was the lack of big-ass engine in the front an advantage for them? Seems like the empty frunk (and low center of mass?) allows for some engineering that can't be done in a conventional ICE car.
That's why I think they're dangerous, as I wrote. But they're not illogical.
I second this. I was refreshing some of the linear algebra I learned in college recently and his videos gave far more insight into what linear algebra is actually about than I was taught in college. If everyone studying linear algebra in school watched his videos before taking the course they would have a much easier time learning it. His calculus series is of similarly high quality and I would imagine his other videos are too.
Wish they would flesh out the problems. Guess its the usual mix of overcrowding and objects out of reach. Also badly designed subgroup that make long linear workingsteps necessary. Also robot not as self controlled actor slaved to a plc as a nearly remote controlled actuator and off they go.
Yes, that's exactly what I was trying to get at. Thanks for the clarification!
Well it's already in the hundreds. Do you want to try to memorize them all? I certainly don't. Near and far isn't that helpful, because people seem to care more about Uranus and Neptune and Saturn than they do Vesta and Ceres, and they seem to care a lot more about Pluto than they do Makemake, Eris, and a bunch of others that I don't recall the names of that are in the same general area.
There is one sure way, and it’s a test of your fortitude. You find a a college textbook with the answers to the even-numbered problems in the back. You sit down in a warm or hot room, and solve them. If the textbook is in its 4th printing or so, the answers are correct. On a few, you’ll have to work for hours.
Now here is a very, very, important point. All the learning occurs on the problems you struggle with. In the blind alleys. A lot of learning in physics comprises paring down your misconceptions until the correct methodology, often surprisingly simple, appears. Then, you understand how to apply the basic laws to the problem at hand, which is what physics is. I’ll emphasize the point by stating it’s converse. A problem you can solve easily and quickly yields zero knowledge.

I would recommend two outstanding textbooks. Halliday and Resnick, early editions , printed in the late 60s and 70s. If you can do all the odd problems in this two volume set, you are an educated person, regardless of your greater aspirations. Edward Purcell’s Berkeley Physics Series Second Volume on Electricity and Magnetism. Might be the best undergraduate physics textbook ever written. Did you know that magnetism arises from electrostatics and relativistic length contraction? It’s right there.
You should also get yourself a copy of Feynman’s Lectures on Physics. Warning. Read it for intuition, motivation, the story of Mr. Bader, and entertainment. It’s at much too advanced a point of view to help you solve nuts and bolts physics exercises, which is what you must do.
One final warning. Every one of us sits at a desk with a powerful internet-connected computer. Don’t do this. Even get a calculator to avoid this. Of course, when you are stumped you’ll want to see how a topic has been treated by others. Do it in another room.
Live next door?
Ask HN: Anyone has experience with AppRun.js?
I happened to see this thread: https://medium.freecodecamp.org/a-real-world-comparison-of-front-end-frameworks-with-benchmarks-2018-update-e5760fb4a962 and was once reminded of lines of code metric. I dont mean to say it is the most important or very important but if frameworks can do a lot for you and you have to write very minimal for your own application it is most welcome! I am planning to take on AppRun.js for my next hobby project. Was wondering if anyone has had any experience (good or bad) with it?

On top of it everything about the lib looks promising. It's small (hence perf should be good), written in TS, has elm like architecture, is component based etc.
The deal was signed knowing there was a possibility of the Germans intercepting the bomb. That risk was known, it does not justify reversing the decision.

>Also, even if a situation ends, we'll always feel that it's decently probable it can happen again throughout our lifetimes

Yes, and imagine how terrifying that scenario becomes if the enemy has nuclear weapons and you don't.

>The fact that Britain was nearly conquered in 1941 would be enough, with that bias considered.

Nearly conquered is a massive overstatement for a start. If you consider that too much of a risk to allow Britain to have nukes, the Business Plot was enough to forbid the US from having nukes.
The problem with sports like football is that they are an accumulative damage sport as opposed to a safe until accident sport.
These FE models are almost certainly much more complicated than those tested in a junior year course. Anyone rig up a simulation and get some sort of result, but to get an accurate simulation result for a complex system like this requires thoughtful constraints, assumptions, and, as others mentioned, accurate material representations, among other things. FEA is a powerful tool, but much more complicated than providing a mesh and hitting go.
That "third party" arbitrator is effectively an agent of one party.

There isn't a vibrant market for arbitrators. A consumer-oriented one clearly wouldn't be approved by the industry board, and so couldn't be chosen even if the consumer would pay for it. It's a dog and pony show to conjure a purportedly neutral third party, but that "third party's" ongoing business relies on delivering the company's desired outcome. Hence, agent.

Furthermore, the deeper repudiation of meaning is the assertion that the arbitrator's decision is exempt from review by a proper court.
I live in a town that lives and breaths college football and this trend is very visible in the youth and HS level sports. Soccer is extremely popular.
I'm writing a book called "A Programmer's Introduction to Mathematics". Would you like to see a draft? Shoot me an email at mathintersectprogramming@gmail.com

It's an introduction to mathematics from a programmer's standpoint, with a big focus on taste and that second level of intuition beyond rote manipulation and memorization.

Includes chapters on sets, graphs, calculus, linear algebra, and more! Each chapter has an application (a working Python implementation) of the ideas in the chapter. The applications range from physics to economics to machine learning and cryptography. One chapter even implements a Tensorflow-like neural network.

There's also a mailing list: https://jeremykun.com/2016/04/25/book-mailing-list/
FeaturedFounder.io creator here. As a developer I get approached all the time about potential co-founding roles. Too frequently the people I speak to are cagey, vague, or unclear about who they are, what they're building, and what they have to offer.

I created Featured Founder to add transparency to the cofounder search process so people can stop searching and focus on building their product.
the simplest is to monitor prices on multiple exchanges and buy/sell depending on fluctuations.
An idea to prevent mass shootings
I've had an idea for awhile that I think would help prevent some of these mass episodes of violence we've been seeing lately. I personally don't have the resources to implement anything like this but I know there are many engineers out there who do and I just want to put my idea out there to get everyone's thoughts and maybe help improve on the idea.

So essentially my concept is that people be equipped with a PPD (Personal Protection Device). You would be required to take a short training class before having one and be licensed and registered. It would use some combination of non-lethal weaponry (stun dart, gas round) and use a smart targeting system where it basically works like a camera and it's point and fire. The target would be "painted" and the the device would figure out the best trajectory to the target. So in the heat of the moment a non-combat trained person would have an easier time using it. After the round is fired and the target is unconscious, the police would be notified and a picture of the target sent to them as well as the GPS coordinates of the device. I imagine if something like this was even integrated into cellphones or something it could become extremely widespread and everyone would have a method to protect themselves that didn't rely on guns alone. I think if adoption rate was high enough then these shootings would become less frequent.

I just wanted to share this idea. I know the technology is out there to put something like this together but like I said I don't have the time or the resources to do it myself. I might have overlooked something as well. What are your thoughts?
Tourist-heavy Wall Street could get pedestrian-friendly improvements
I can beat you to death with a hammer or stab you to death with a knife. Should we not build hammers and knives? Should hammers and knives be subject to KYC laws?

Sure you can argue that it's different because those are things the common man can get whereas on the state can afford surveillance dragnets and drones but it wasn't that long ago that only the state could afford computers.

Edit: Apparently I struck a nerve.

Technology transfers between military and civilian application all the time. Propeller technology that helped submarines that are now obsolete stay quiet is fine tuned in a different manner to yield more environmentally friendly watercraft. A drone that can disperse insecticides on only the crops that need it can deliver chemical weapons with some slightly different fine tuning.

An 1984 (or 2018 UK if you like) surveillance and law enforcement system could be used to track down corruption in government, suppressing dissidents, identifying insider trading, identifying human tracking, etc. It all depends on who's using it. (I personally don't trust any government to properly wield that kind of power.)

The technology doesn't care. It's all how you use it.
Show HN: pion TURN, an extendable TURN server written in Go
I think you're seriously underestimating how insular this community is. The phenomenon you're describing really just doesn't happen. You build a reputation among cryptographers and build to the point where your designs are seriously considered as standards.
Anyone who tells you can "learn" math and pyhsics by just watching videos is lying to you. There is no substitute for actually doing lots of problems.

Pick a book, pick a pace to work through it, and spend a few months going through it. Do the exercises in the back of each chapter, work through the solutions, and ask around if you still can't figure it out. Persistance and routine are key here.

As for books, I like Stewart's Calculus, Lay's Linear Algebra, and Hammack's Book of Proof.

For physics, I don't know what your background is. Giancoli is a popular undergrad freshman year book, where as griffith's electrodynamics is a bit more advanced.
In all the sports you named - brain injury is not a regular part of the sport - it happens when something goes wrong. In football players suffer mild traumatic brain injury in every game, as a regular part of game play.
The irony is that the whole game is not that different from the mortgage backed security products that torched the world.

The market's a lot smaller, but it looks a lot like the same information asymmetry that led to more and more complicated instruments being created and sold (in what was at its base a game of trying to push leverage).
Biased and true is better than biased and false.

Unbiased doesn't exist so I'm ignoring it.
> The original article is mainly about US and Canada, where it's much less typical

That's extremely variable over time, and it's been very much in the rise in recent decades, IIRC.

Of course, it may be a matter where cultural attitudes toward behavior are much stickier than actual behavior.
If it can be tested, then it's not "ignore physics".
The way you speak about that book reminds me of my equally teenage love of Kerouac (Might be a virtual right of passage for my age range). I got in well enough with the small Ontario town high school librarian to gain access to the “banned books” they stowed in the back but never disposed of. Wolfe lived back there as well as a number of notable Canadian and American poets. I hope I don’t sound too assuming when I say that I think I know exactly what you mean.
Plover.io – Browser file transfer for any device
How to Join the MacBook Pro Crappy Keyboard Class Action Lawsuit
It's pretty much ubiquitous in any quantitative field... would not even know where to start
I'm always amused by these PowerShell threads on HN.

How is it that objects are an accepted thing for basically every programming environment in modern use, yet somehow controversial when it comes to the shell?

The prayer-based text parsing toolchain sucks. It has always sucked, regardless of platform. We put up with it because it was all that we had.

Jeffrey Snover came up with something better and thanks to PS Core we'll be able to use it everywhere!
People wanting to be heard and feeling part of a community is a basic human need. We receive it in many different ways, and while social media is not always the healthiest way, it is one of them. People become depressed without being heard.
This is exactly right. I elaborate on the method in my response.
To be clear, I agree. Containers on Linux are very weak security boundaries and should not be considered safe sandboxes for untrusted or dangerous code. In fact, post-Spectre, only physically independent hardware unattached to the network should be considered a reasonably safe sandbox.

However, something is better than nothing, and it's just not true that there's no difference between running something from the AUR and running something in a "confined" snap. There is some crap in the way at least.
You’re taking HN too seriously, it’s not a formal argument for nitpicking - it’s an opinion.
My point exactly :) (check the /s = satire tag)
Don’t cryptographers still have concerns about an AES backdoor?
Yes, because seat belts and airbags only encourage people to drive faster and more reckless
> Do any of those track blocker managed to block Cloudflare? Nope

False. I just visited cloudflare.com and uMatrix blocked 2 Cloudflare cookies, 8 Cloudflare scripts, one tracking pixel each from Bing and Google Ads (who are on the "bad guys" list), a script from Optimizely and an embedded frame from Google Tag Manager. That's with a whitelist that only allows CSS and images (the default, I think), and only from first-party sources.

Surprisingly, the site wasn't even broken.
It's the same content with a new layout. People usually do this when they're expecting a lot of traffic on their site, which typically corresponds to announcements.
I would suggest getting text books with loads of homework problems with solutions and actually sit down to work through the problems.
It doesn't take much to cause mild traumatic brain injury, and no amount of helmet research will change that. This is safety theater.
Surely this is better explained as just another instance of best-player-of-most-popular-sport-is-popular? The same dynamic happens in countries where the considerably less violent of the two "footballs" is played. And star basketball players also are extraordinarily popular. Maybe the only distinction in American football being that a single individual gets to make nearly all the scoring plays and is designated with a specific role so that everyone knows who they are.
It is multiple times replicated across geography, and available anywhere. So it's more than a disk.
The problem is people believe in a fair world and that our foes operate with the same values so that if we accommodate them we’ll be okay and therefore we should not develop means to better wage assymetrical warfare because that’s an unfair advantage. Moreover, what if they are in the right and we are in the wrong, in terms of history.

They fear that this current admin and future adminis may depend on as sec Clinton put it “droning” people we simply disagree with rather than actual military adversaries.

The main question is effectiveness of the system, given some baselines.
More importantly, pretty much the whole point of a PKRNG is to make the random state recoverable. It's not as if competing RNGs have designs that enable the kind of backdoor Dual EC does. That's what was so weird about it, and why there was some doubt about what it was --- not doubt that people should use Dual EC (of course they shouldn't, and it's been amazing to see companies like RSA and Juniper actually adopt it; the cryptographic incompetence behind those decisions was shocking), but that NSA could really be using such blatantly awful tradecraft.
I liked the model being discussed here. But I put the companies in very different spots, which I found to be a distraction.

Microsoft is one of the key example used. In their heyday they were deeply integrated. They had the whole stack and they sold it enterprise-level and enterprise-wide. Companies where "Microsoft shops" for this reason. This philosophy was one the the reasons Microsoft was late to the Internet party.

I also disagree deeply that "Facebook could lose all of its third party content providers overnight and still be a compelling service." Equally on that spectrum Facebook is right next to Google. Who surely couldn't lose all their third party content overnight?
Wasn't Homejoy's problem the fact that once people found someone they trusted, they would just transact with them outside of Homejoy and, thus, not pay Homejoy the repeated commission they expected?

By contrast, you can't get the benefit of Microsoft's Windows ecosystem, or Apple's app ecosystem, without first giving Microsoft/Apple the full amount of revenue they expect from you.

In other words, a differentiated supplier / externalised network moat is only a moat if the vendor can get all its revenue upfront, or can reasonably ensure that the moat will keep customers locked in for a long time.
It's a pretty intuitive thing and I'd imagine there would be a lot of use cases.
In this town, you can flip the channel all you want – the news is often the same
20 minutes of buffer in an auto plant? That's a building the size of a large supermarket.

Buffering space is a big cost. Here's a Coca-Cola bottling plant.[1] This one has an extremely low employee count. It's mostly buffering space. That gives employees time to move to the trouble spot and deal with problems. Since Coca-Cola has been at this a while, they must need all that buffering.

In an auto final assembly plant, you don't have the luxury of big buffers. On a rigid line, there's no buffering at all - if any station stops, the whole line must stop. That leads to quality problems - if someone drops a bolt, that bolt never gets inserted. A few seconds of buffering between stations helps. That's what Toyota's kanban system introduced. If you watch videos of Toyota production lines, they have a big timer showing the cycle time of the last cycle. It's not always the same. Sometimes a cycle takes a few seconds longer. If something goes wrong, like a tool breaking or a bad part, the stations upstream use up their buffering capacity and stop one after another. But the whole line doesn't have to stop for a one minute tool change.

[1] https://www.youtube.com/watch?v=7V6JO0Rfgas
Check out the BPM tools others have mentioned (Activiti, Camunda, etc...)
Paradoxes of Time Travel
Jewish cities with a (relatively) not religious and wealthy population, Muslim Arab and mixed cities, and finally orthodox Jewish cities (which Tiberias, as many other northern cities, is rapidly becoming). Correlation with wealth and religion is pretty obvious.
This is how you know your skills are no longer in high-demand. When employers want to select for ridiculous crap like that or use vague reasons for denying an applicant like “cultural fit” it’s because they have way too many qualified applicants.

If your skills were truly in high-demand, they would verify that you could do the work and are easy to work with then they’d give you the job (see: Nurses).
One of the things that makes conspiracy theories so appealing is their simplicity.
When your field of interest is the reals, those complex eigenvectors don't matter.
I've been asked to work for military industry companies before. And I have always declined for ethical reasons.

But as I sit here and think about it, I wonder if its a good thing that a person like myself (that believes I'm on the ethical high-ground) decline these types of jobs.

Someone is going to take the job. Perhaps someone less skilled than myself, perhaps someone less ethical than myself ? What is the result of that ?

As another poster wrote, it's "good" that the targetting gets more precise, meaning less collateral damage.

But to each his own. We need to be able to sleep at night aswell. And that to me also seems like a really good reason to decline.

I'm kind of on the fence about wanting to work in that industry.
for 10$ MS gives 5 account with 1TB each so total 5TB and office for each account. Really hard to beat that deal.
>and sell them to any country in the world

This is never true. No government will allow its companies (and in this context that's how it's seen) to sell weapons to countries they don't approve of. That said, apparently the defense industry is often irresponsible at best.
I wonder how they personally attacked those experts. Was it public?
Non-Volatile Memory Trends: Toward Improving Density and Energy Profiles
Are hammers and knives designed and bought to kill people?
I'm willing bet many people (like me!) only downvoted you because you're complaining about downvotes, in violation of the HN community guidelines.
I prefer to imagine we exist in a roughly newtonian program, but the computer executing it is a distributed system with finite local resources, so it doesn't all run in sync.
Everytime I read one of these pieces they seem to all miss one of the biggest reasons I personally favor electric vehicles; concentrated traffic of combustion vehicles and local pollution.

The health and local environmental effects of vehicle pollution in cities are very real, noise too when it comes to buses and heavy vehicles. This is yet another area where we see a urban vs rural divide.

Combustion vehicles also can get less efficient and more polluting over their lifespan where EVs can have cleaner energy sources without needing to alter the vehicle.
Is the hackathon not during work hours?
The difference is between creating a hammer, and creating a hammer specifically for the purpose of efficiently killing humans.
Quantum Soccer (2009)
How Disruptive Is Google Compute Engine Live Migration
As a MotoGP fan, I am quite aware that folks will pay tons of dosh to watch, say, Marquez. But not to watch me. That's okay, all that MotoGP tech can get me to work a few seconds faster, and a MotoGP-inspired back protector can assist in keeping me walking should it all go sideways.

But it was more about the utility. Dangerous as it might be, I can at least get to work on a motorcycle. No one is dashing to work 10 yards at a time in pads.