skysight-inc/HackerNews huggingface dataset:
EmbraerX Beacon | Senior Frontend Engineers (React & React Native) | 100% REMOTE (but, for legal reasons, US or Brazil only)

Embraer, the third largest producer of civil aircraft, is hiring. We’re building https://beacon.works, a tool for airlines and mechanics to manage unscheduled aircraft maintenance. This has the potential to be a very high-value product for the aviation industry and could make air travel much better for everyone.

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Tech: React, React Native, GraphQL, Clojure, Postgres, AWS/GCP

Apply: Please email your resume to work@beacon.works (principals only, no recruiters or agencies)
> manipulative to try and make their pricing negotiations a social movement.

Aren't the apps negotiating terms essentially a 'manipulative social movement' with a single app/VC backer/organizer (each)? why shouldn't the restaurant owners organize in order to increase their bargaining power to match?
I created
https://legiblenews.com/ because of this frustration ... and took it all the way to the level where loading a page is exactly 1 request.

The other frustration I’ve had with news websites is they don’t link to source material, so it’s impossible to dig into a topic and accidentally learn something.
I think you missed your parent's point. Let's examine a related case: fashion models. The industry has been manipulating images for years, to make models skinnier, whiter, removing blemishes, etc. In your language, these are tools for eliminating the effect of bias for the models. The impact that's had on our society is well studied: biases have been disastrously reinforced.

This isn't imprecision of language.
Vacuums and hair dryers invariably use universal motors that run the same on ac or dc. AC motors aren't that common in household appliances because their speed is set by the powerline frequency, which is slow. Typically you find them in microwave oven fans.

They're more common in industrial equipment, but a lot of them there are being converted to run off VFDs, which of course internally run on dc.
I think HN is just generally interested in financial gain and doesn't mind bending ethical guidelines for that cause. I mean, they do have a high incidence of people working for tech companies.
until some genius decides to switch to your lane to get further ahead in life a whole 3 yards.
Yes, exactly. It's really not even limited to dinosaurs.
They aren't getting Django or Vue in return for their money. They get Django and Vue for free. If there's an additional feature that doesn't exist and they need someone to develop it, they are typically willing to pay for that feature.
You can buy female dust covers on Amazon. I haven't really had issues. My biggest complaint was how susceptible USB micro was to breaking, but no problems with USB Type-C phones.
Which is the better one you recommend?
A new technique to pick locks is discovered. Does that mean all locks are defective?
I think this article is written from the perspective of a satisficer- it sufficiently meets the requirements he cares about. This is the perspective of most consumers for most of the goods we purchase. It's good to get a well-considered perspective from somebody that isn't deep into the "enthusiast" category of keyboard purchasers.
Some of the features sound amazing "sound amplifier" sounds like a hearing aid like function. If it has a low audio delay and good function set to filter noise it could be revolutionary. I was looking for something like this in app form not too long ago.

I wonder how gesture navigation will work with some apps.

I wonder which features will make it into aosp/lineageos. I'm missing android smartlock in limeageos. If I could wish for a feature for android it would be "game mode" from oxygenos.
Elixir Telemetry: Metrics and Reporters
It's amusing that now the (to me, fairly natural) "strangely gratifying...withholding of details and delaying of pleasure" is portrayed as "[casting] off the imaginative constraints of mass culture", when the general story has been that treating sex like shaking hands or sharing a cigarette is itself the breaking of old-fashioned constraints. The circle of life, I suppose.
This data would be easier to put into context if anyone who replies also includes the number of employees that are supported by their SaaS budget.
Books do have a lot of disadvantages (and I say this as someone who spends A LOT of money on books).

They are heavy, expensive, take up space, you can't search them etc.

However, I find it almost impossible to learn hard subjects from a PDF. Printed book is so much better. I wonder why.
> You can get rid of any stacks whatsoever by keeping a parent pointer in the tree node data structure. Effectively, this turns the tree into a (sort of) state machine. While traversing, you need no memory other than the current and previous node/state. The traversal algorithm is very simple:

While this sounds innocent, truly consider the ramifications of this decision.

Your node has now grown to be +8 bytes (the size of a 64-bit pointer). If you have 1-million nodes in your binary tree, you are using +8MB of memory.

-------

Lets consider the alternative: lets say you have 1-million nodes, and you have a red-black tree (imperfect balance: instead of a perfectly balanced 20-depth tree you have some branches which are 40-depth).

Traversing to 40-depth requires 40x pointers on the stack, or 320 bytes.

----------

In effect, you're spending 8-bytes per node (which could be millions, or even billions of nodes), to save log2(depth) space off of your stack frame.

While the state-machine is very "clean", it seems like a very bad tradeoff from an algorithmic / memory space point of view. I'd rather spend log2(depth) space on the stack, rather than O(+8 bytes * number nodes) in the heap.

I think there's something to be said about the clarity and cleanliness of the state-machine design. Its quite possible that some algorithms are easier to write with this "parent pointer in node" methodology. However, anyone seeking the highest performance per unit-memory will have to see that the +8 bytes per node is a terrible, terrible tradeoff.

-------------

> Update: Todd Lehman pointed out that given node-level locks, this algorithm allows concurrent traversal and update of the tree. Any atomic operation other than detaching a non-leaf node is safe.

Hmm... the parallel-angle I haven't thought about. But it does seem to be a potential building block as maybe even a lock-free data-structure.

Or just use locks, since locks are easier to think about.

Insertion and deletion into the tree seems possible, but "rebalance" is very difficult for me to think about (since it possibly requires modifying many, many nodes). Locking all nodes involved would be a heavy approach and probably work.

Red-black colors are kept track of for self-balancing purposes. Maybe more colors are needed to make the methodology "clean" for multi-threaded / lock free purposes.
Hey I'm a 840 fan as well. At first I didn't like that romer-g switches didn't have quite as much travel as Cherrys, but now I prefer it as the keyboard is a little lower.
It will be useful to me, but there's already a volume button. Would be nice if that just worked, instead of it being nerfed.

The volume limitations only made sense if you never used headphones less sensitive than the oem ones and listened to source audio that was only at maximum volume all the time.
Mostly looking for a cheaper Google Speech-to-Text.
This technology has been posted on HN before and the comments were all too similar to this one. I understand why a lot of people are falling into the FUD-hole, but we can pretty easily solve the issues mentioned in the comments by inserting a digital key - similar to a SSL certificate, into an image/video upon initial upload. Or even upon creation, maybe using some sort of ledger to verify integrity. I'm not too worried.
Some claim that the AT&T lawsuit hurt the BSDs, but there was lawsuit-rattling for Linux and GNU as well

Do you mean the SCO lawsuit against IBM? Because I would argue that 1) that happened long enough after Linux had established itself that people were too invested to be immediately scared off and 2) people put a lot of faith in IBM and there legal team to defend Linux. I think the community around Linux was able to basically laugh the whole thing off once SCO started presenting their actual "evidence".

Without a large company to defend it and the fact that no one had really started using it for anything serious yet made the AT&T lawsuit against the BSD's look a lot scarier at the time.

All good points by the way, but I do think AT&T rattling their sword did have a pretty chilling effect on BSD adoption as well.
9 already implements the swipeable "pill" navigation. It isn't on by default if you upgraded from 8.
i'm a parent and i want to minimize distractions in the classroom and tech is the greatest distraction ever, e.g. me posting here
Actually, today Firefox Monitor popped up and told me that a website I was using (Canva, I need it for work reasons) was recently hacked. My account was also compromised. Canva didn't even bother to inform me of the fact.

I think this is a great functionality and it will really help the average user.
A German Tax Case Is Putting the Entire Finance Industry on Trial
Must be an American problem. Never heard anyone outside of the US talk about the colour of the bubbles. Everyone uses Whatsapp here.
>There is a role for technology in school, she says, but it is a matter of how much and at what age.

Something about the school procurement process that knocks all the nuance or subtlety out of the goals.

This issue with technology goes way, way back decades. Always there are promising trials, it works here and there, under the right circumstances, and so some school wants to roll it out broadly and it doesn't work as well. Then there is a rollback.

[edit] And I could say the same about software development processes.
Sinister things are already happening to the protestors. The piece of shit governmaent is dropping UV powder on protestors from fucking helicopters so that they can be identified as participating in the protests, and then arrested.

So, fuck you china.

I personally boycott anything from china for the rest of my life. Period.

I will hold to that statement.
because when somthing is illegal and you partake of the activity that is by definition- Crime.
criminals are usually bad okay so dont do crimes
Probably because you can’t search it. You actually have to pretend to read it.
Personalized adverting: see yourself / your family using/enjoying products you're yet to purchase. Cars, clothing, trips...
There's been a big backlash against screens in my high privilege/high achieving community.

My dyslexic/ADHD daughter did a trial day at a private school with a "no screens in classrooms" policy. It was awful for her, because she's grown comfortable using text to speech, dictation, and other tools to do cope with the friction in her brain. My other kids benefit in different ways, they've all learned to do independent research way earlier than I ever did and know how to find answers to pretty much anything they think about.

None of our kids have access to Candy Crush or other gamble-games, though, so they tend to have healthier screen habits than their friends. All the quotes from parents in the article make it sound like they're helpless. I think that's an indication of just how bad tooling and education for _parents_ is.
I don't see why that would happen; you wouldn't be writing these by hand
How do you block cryptominers?
Flock Freight | Senior Software Engineers | San Diego, CA | Onsite | Full-time

Flock Freight is a thriving, Silicon Valley VC-backed startup based in San Diego (Solana Beach). We're building a transformative technology platform for SMBs that ship LTL freight — a $40B market! Our vision is to create a platform and marketplace that efficiently combines freight from multiple customers into multi-stop full truckloads, and matches them with the most efficient carriers, thereby avoiding terminals and hubs, and the damage and delays inherent to them.

Our team is made up of a small group of engineers who are passionate about creating innovative solutions built with modern technology. As a member of this team, your talent and expertise will influence the best practices, design patterns, and technologies that we use to deliver the best experience for our customers.

We are hiring across our Engineering organization:

* Senior Research Scientist

* Senior Software Engineer, Algorithms

* Senior Software Engineer, Back End

* Senior Software Engineer, Full Stack

* Senior Software Engineer, Infrastructure

If you're interested to find out more ping me at david+hn@flockfreight.com or apply directly at https://www.flockfreight.com/careers/.
I'm in the same boat - I like Pocket, but I don't think it should be built-in to Firefox. I don't see the issue with making it an extension/plugin.
White Swan Data | Central London, UK | https://whiteswandata.com | ONSITE

White Swan Data is a betting data analytics company. We are very new in our current form (1 page website!) but have around 20 quants/data scientists/developers working on sophisticated systems to maximize our client's betting returns. We are small, the metrics are simple and we are just starting a rapid expansion of our development team.

We're seeking independently minded developers who don't need to be told twice what to work on and who will circle back for clarification only once they have got their story straight on what they do know. The company is small and you will be working face to face with very clever product owners who will provide a tight feedback loop for your code, your ideas and your efforts.

* Mid/Senior level developers in Python, Java or Kotlin.

Exposure to SQL DBs, scientific programming, data gathering, data analysis and networking code a plus. For Python specifically: pandas, numpy, trio, requests, beautiful soup etc. Kotlin because we love it.

The people we hire will have a big say in our future tech stack, the architecture of our platform, in fact, anything really where they can demonstrate both knowledge and maturity of understanding. We are a small, smart, data science heavy organization looking to quickly grow a team of excellent developers to write both model and operational code - so it's a real opportunity to get in on the ground floor and maximize leverage of your skills.

In the first instance please message me directly (email in profile) with just a single paragraph on your education, your work experience, your keys skills and an answer to the question: "I don't need to be told twice because...?"
Walmart ends handgun ammunition sales, asks customers not to carry guns
I think it is. A lot of LA was built out 100 years ago. Many of these people bought their house 20+ years ago. Waze started causing problems within the last 10 years and the marginal value of using these roads can be debated. I can't imagine these back roads relieving 405 traffic by any reasonable amount.
Deepnote | Prague, Czechia | Full Time | https://www.deepnote.com/

Deepnote is a better data science notebook. We work with JavaScript/TypeScript/React/Docker/Kubernetes/Jupyter to build infrastructure for running heavy machine learning workloads and to give everyone access to state-of-the-art data science tooling.

We are looking for experienced developers excited about contributing to open source software and helping researchers, developers and data scientists solve hard problems:

* Full Stack Engineer (TypeScript, Python, React) | Prague
* Infrastructure Engineer / DevOps (TypeScript, Kubernetes, AWS, GCP) | Prague
* Front End Developer (TypeScript, React) | Prague
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Email us at work@deepnote.com.
That was my first thought as well, but the article says that password led them to the evidence that ultimately put him away for 10 years. Doesn't sound like much of a plausible deniability partition...
Postman Runner and Workflows – That’s a Bug
Here's a link to the same submission 3 days ago. Looks like it was flagged / killed.

https://news.ycombinator.com/item?id=20845763
School books are expensive is because they are produced by corps with interests to make profit...

I see no reason why school books cannot be made cheaply...
I think the story is indicative of longer term trends in our thinking, so the discussion is relevant even for old or even fictional examples.
Is 186,000 a large or small fraction of 7M? Also note the largest few accounts are liquidity pools owned by exchanges, and custodial accounts we use for cold BAT.

How does a browser grow from zero share? Hint: it's not by "influence" alone, with zero benefit to the prospect being pitched by the influencer.
Red Deer | Senior DevOps Engineer | AWS | London | Full Time

Red Deer | Senior Frontend Developer | AngularJS\React | London | Full Time

Red Deer | Senior Backend Developer | .NET Core | London | Full Time

We're building world class financial software dedicated to enhancing the performance of some of the world’s leading hedge funds, asset managers, wealth managers and pension funds.

We're looking to build on our talented team. We come from a range of backgrounds and experience in finance is not mandatory.

Email us at recruitment@reddeer.com
It amazes me how often I read the article and come to the comments to find I missed how old it was.

Thanks for pointing it out, I think flagging the post will help get the post noticed and title changed.
Ask HN: Complex modulo is a division ring? Can you prove it?
The integers mod n form a mathematical ring. If n is prime, they form a division ring (a ring in which every number has a multiplicative inverse).

The complex integers modulo nr (real) and ni (imaginary) also form a ring. They appear to form a division ring iff 1) nr = ni, and 2) nr is a Mersenne prime.

Does anyone know how to prove that this is in fact a division ring (other than exhaustively)? Can anyone ELI5 (or even ELI20) why it has to be modulo a Mersenne prime?
This headline bothers me. What evidence is there that parents drove the use of technology in schools? From the beginning parents have been extremely skeptical about the use of technology and have always voiced concerns. There is every evidence that this was driven by administrators responding to incentives and mandates, and tech companies hoping to make money selling software and devices. There has never been any evidence that giving kids screens helps them learn, and as we see in the real world, the exact opposite is what is happening.
Actually it went something like this:

Palm -> meego -> xda mad scientists -> iOS -> Android

Given that Palm UI people now work for Android, this was bound to happen.
While I get that apps may be heavy handed, and perhaps the contracts should be renegotiated (not providing marketing data to restaurants for one seems 'off') a simple review of 'marginal cost'/'marginal utility' accounting would highlight that this is not necessarily the zero-sum game the article presents

If I'm getting 50% more orders at the same fixed costs with a smaller profit margin on that subset of orders, I'm still netting higher total profits and getting higher utilization on my existing investment..
But it is. Anything that has to be earned and saved over time to make a purchase is a store of wealth.

Think saving cash(or putting in bonds) for a down payment.
Intello | Senior Software Engineer | $100k - $160k + equity | New York onsite preferred, open to remote candidates | https://www.intello.io

Intello is the leading provider of SaaS operations solutions. By integrating with existing cloud software and leveraging proprietary solutions, Intello provides companies with real-time visibility into their SaaS spend, usage and security allowing them to manage the full lifecycle of SaaS applications in one platform.

We are looking for a Senior Software Engineer + Product Engineer with a passion for solving challenging technical problems. This is the opportunity to work on a product that is undergoing tremendous growth and brings with it an opportunity to build out new architectures and solve scalability (and data!) challenges. At Intello you will be working with a talented and experienced team, writing code in Go & Typescript.

If you are interested please email shlomo (at) intello (dot) io
I used the V1 of this for about 6 months and really liked it [1]. It has a nice adjustable backlight, media keys, it wasn't too loud in an open office, and the switches felt pretty nice, especially for being ~$30. There's a Mac version as well, but I couldn't find it on Amazon.

[1] https://www.amazon.com/VELOCIFIRE-TKL02-Mechanical-Copywrite...
I figured this was an Onion article before I opened it.
Philip Wadler showcases and comments on some of this history in his conference talk "Propositions as Types" https://www.youtube.com/watch?v=IOiZatlZtGU
YouTube says its new hate speech policies are working
At least write a few words explaining the link you post.
How to stream gaze data from Tobii eyeX to JavaScript via Node (2018)
To go slightly higher tech than a water tank, you could line the inside of the fridge with bags of phase-change material keyed to around 2.8°C. Then you program the thermostat to shut off at 1.0°C and turn on if 2.8°C or greater (and powered).

That ensures that the phase-change material is always completely frozen after a long period of being powered, and keeps the fridge at a good refrigeration temperature.

Tetradecane paraffin seems like a good starting point. It's not always easy to find phase-change data on heavier organic molecules, even plain old alkanes, but here are a few in about the right range:

5.8°C n-tetradecane C14H30
5.0°C 2-methyl hexadecane C17H36
4.8°C 2-methyl heptadecane C18H38
2.5°C 2-ethyl octadecane C20H42
0.6°C 3-methyl octadecane C19H40

The closer the branch is to the center of the chain, the lower the freezing point. It's likely one could get a decent refrigerator-liner phase-change material just by chilling liquid mixed alkanes to 4.0°C, filtering out any solids, then chilling to 1.0°C, filtering again, and keeping those solids. Those are exactly the types of molecules refiners hate. Similar isomers are already removed and reprocessed to improve the cold-temperature characteristics of diesel fuel, because otherwise they gel, and gum up cold-flow filters. Rather than cracking them all into more desirable fuel molecules, some could be diverted as fridge wax.
Arcesium | Distributed Systems Engineer | Infrastructure Engineer | Program Manager – Platform Extension Relationship Manager | Software Engineer | Technical Relationship Manager | New York, NY | Onsite | Full-Time | Visa

Arcesium is a post-trade technology and professional services firm. We offer a new way for hedge fund managers to scale their business while maintaining control of critical non-investment activities. Arcesium combines a comprehensive and fully-integrated technology platform with a team of experienced hedge fund professionals to solve the most complex post-trade challenges of asset managers. From real-time integration with order management systems to robust and automated oversight of third-party administrators, Arcesium offers managers an elegant, unified, and expert solution for their entire post-trade process.

Arcesium is hiring for the following roles:

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-Infrastructure Engineer
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To be considered, please send your resume to careers@arcesium.com.
Not the same amount of energy. There is heat and kinetic by-product from the compressor.
Happy Labor Day. Let’s Have a Maximum Wage