skysight-inc/HackerNews huggingface dataset:
> My understanding is that Airbus assumed the worldwide increase in traffic, in part fueled by developing countries, combined with limited slots in busy airports would give a large boost to the hub and spoke model and make a large plane viable.

And that bet made a lot of sense before 2008. The number of slots mostly wasn't growing, but number of passengers on airports was going really fast, with no serious economist predicting it would stop soon.

What Airbus didn't explain was how the airports wouldn't invest in more slots, but would invest in the huge runway clearances required by their plane.
Time Travel (2006)
> Elio, is circling the drain

As god knows how many other <4 wheel new mobility concepts.

Two gyroscope stabilised motorcycle startups went nowhere, unable to solve the desaturation at high speed issue.

Monotracers cost CHF100k, and are handmade luxury toys.

WV LX1 also costs a fortune, while providing pathetic performance
You are assuming it’s the technology I’m assuming it’s the licensing change.
Thanks for sharing! So it seems you may end up using an incremental counter as a version – or was that a placeholder example?

What are the main use cases for the data pipelines you're forwarding your data into? Are the events fairly rich or fairly simple? Do you plan on doing any type validation as well?
It's as if I was trying to get from Camden to Islington and was given directions via Edinburgh. Suffice it to say, if I had a vague idea in the first place it's gone now.
Even boring CRUD apps might want e.g. push notifications.
This just plays into the hands of big businesses at the expense of small ones. What if the company is 25 people and 6 decide to take the leave at the same time? No way they could handle that.
> A bet in which you can win nothing more than a refined résumé, or lose a lot of time.

I strongly disagree. Perhaps if you dont really have a problem that needs React to solve it. I understand you already had extensive expertise solving this problem in JS without React et all.
An opinionated guide to choosing tools to run your startup
That answer is not an answer. It is just a way to look smart while not helping at all. I've seen this behavior a few times, mostly at work.
Congrats to completing this project. What's the status and further plans for it? I didn't find a license.
I'm not a VC, but I'd be happy to give this guy the same amount of money that YC gives to their startups. Seriously.
In political science, the term populism has a long history of which I can only offer a small sketch. The paradigmatic cases are to be found in Latin American politics over the last century, especially the Argentinian leader Juan Peron [1]. In its classic form, the term is used to describe a wave of political parties who were neither pro-communist nor pro-capitalist, who found great success in countries that were both electorally democratic while also highly economically polarized. In countries that had traditionally been governed by a small cultural/economic/military elite, this new generation of political leaders began to win campaigns by vote-seeking from the disenfranchised through whatever means, typically through a combination of anti-status quo rhetoric and redistributive policies. This isn't just to suggest that they weren't "authentically" in favor of the poor or anything like that, but to understand how such a phenomenon can change the dynamics of democracies, where politicians are lead less by values (whether they be classically conservative, pro-market or socialist) than vote-seeking at any cost. It's also why we can find both "left-wing" and "right-wing" variants of populism, depending on exactly the types of rhetoric (anti-immigrant or anti-rich, for example) and policies (build the wall or tax the rich) that are employed.

The phenomenon is heavily connected with what is called "clientelism", ie where politics becomes ruled by relations of patronage. Imagine a situation where a particular political party literally pays for membership, with the expectation of a vote and to mobilize for certain events. Such structures are not uncommon in rural areas of developing countries, where essentially feudal relations (think the same person, who conveniently owns all the land and employs everyone in an area, has been the mayor of a town for three decades) have been converted into seemingly democratic structures [2].

[1] https://en.wikipedia.org/wiki/Peronism or https://en.wikipedia.org/wiki/Populism_in_Latin_America
[2] https://u.osu.edu/laspoliticas/2016/10/30/clientelism-in-lat...
Most of the Results in Personality Research Do Replicate
This is frankly an idiotic statement. Many people use Tor out of principle, not because of their desire to "blend in with the crap".
The Missileman of India
The licensing change surely has to have played a factor
This is a video and slides; this discussion is from when the article was linked here:

https://news.ycombinator.com/item?id=17079197
Jumping on the opportunity to have somebody who knows about those things.

I used to have a huge garden, and made a compost by barely dumping anything organic on a big pile. It worksed great: low maintenance, never one problem, plenty of compost produced.

I now live in a flat, and have composter using worms.

I can't make it practical for the love of me.

If I put it inside, I get flies, no matter how much carbonated material I put in it.

So I put it outside, but it dies from either heat, or cold.

Even when I manage to avoid the worm genocide, the process is so slow. It does produce a fantastic liquid fertilizer in mass, but the volum of organic matter consummed is nowhere close to what I need. I eat a lot of vegies and fruits, and in 2 weeks, I have to put most of it in the trash can, waiting for the worms to work on the legacy pile of trash.

Any advice ?
Not if we take gravitational time dilation into account. But for most practical purposes between Earth and Mars, a minute will be the same.
> They are also very sharply defined as a result of the longer exposure, a human would probably see something blurrier and more ethereal.

The is completely wrong and backwards, the lights are very textured, but they move rather fast, something you see with your own yes, but something you can't capture in a photograph because of the long exposure, which blurs out details.
I like the idea of this thing! I suspect it won't be that popular because the only market is for people who can afford a second vehicle just for commuting.
Parental leave is already very generous in Scandinavia, so companies already have to deal with employees disappearing for several months.
There is always Tk. It's a very friendly (no sudden unexpected behavior), easy to use toolkit.

https://tkdocs.com/tutorial/index.html

Tk works more or less everywhere and sometimes already installed: https://tkdocs.com/tutorial/install.html

and you don't need to use tcl: https://tkdocs.com/resources/languages.html

If you don't like Python, Ruby, Perl, or Tcl, other bindings are available: https://wiki.tcl-lang.org/page/Languages+with+a+Tk+binding https://en.wikipedia.org/wiki/Tk_%28software%29#Language_bin...

While the stock look-and-feel is functional-but-bland on all platforms, modern Tk is completely customizable and can approximate native widgets: https://tkdocs.com/tutorial/windows.html#dialogs
Techstars and Starburst Aerospace are launching a space accelerator in LA
Slack is even more annoying on mobile; I can't post through the mobile webapp, only read.
Moscitos, but now that I think about it.. If a whole population shows massive allergic reactions because the imuno system fights on after the threat is gone..
I've often done this, usually not for a large dataset, but it's sometimes helpful to pipe text through Unix commands in Emacs. C-u M-| sort, for instance, will run the selection through sort and replace it in place.

If you're going the all python route, and even want to be able to run bash commands, and want something where you can feed the output into the input, I'd strongly recommend jupyter. (If you want to stay in a terminal, ipython is part of jupyter and heavily upgrades the built-in REPL and does 90% of what I'm mentioning here.)

You can break out each step into its own cell, save variables (though cell 5 will be auto-saved as a variable named _5) but the nicest thing is you can move cells around (check the keyboard shortcuts) and restart the entire kernel and rerun all your operations, essentially what you're getting with a long pipeline, only spread out over parts. And there are shortcuts like func? to pop up help on a function or func?? to see the source.

It's got some dependencies, so I'd recommend running it in a virtualenv via pipenv:

pipenv install jupyter # setup new virtualenv and add package
pipenv run jupyter notebook
pipenv --rm # Blow away the virtualenv

Also, look into pandas if you want to slurp a CSV and query it.
Thanks for sharing.

> We try to append to our messages to keep backwards compatibility.

Do you additionally do versioning, or do you solve it by only allowing backwards compatible changes such as appending to the message?
No data corruption bugs in the last 10 years is a hard to believe. There was a story here a few days ago about incorrect use of fsync
Most of the world transports a much smaller proportion of their freight by rail than the US. I mean, I guess it's an "artificial problem" in the sense that if the US killed their rail freight industry and displaced all that freight to other modes it'd go away, but I'm not convinced that's a step forward.
Maybe I’m a rare exception, but I chose NoSQL early on when it was still “hot” and have never looked back. We’ve grown from a couple megabytes of data do several dozen terabytes and have had countless issues, but scaling our database was never one of them.
What magic is this? I've never seen a WP site comes close to these speeds. Incredible.
Why would they? Most people cognizant of these terms knows a bot generates more traffic than a human; that’s the point of most bots.
Heathrow expansion is far from a sure thing. It may have been "approved" by the government, but many legal and financial challenges remain. Not to mention ethical and environmental ones!
How many keywords I can fit into a single C# expression? – results
>2. Related to #1 - state school kids may think they are not good enough and not apply.

To back this up, nobody else at my college applied. After I did on a whim, I discovered there was an aptitude test to pass, which I didn't. I blame my negligence for failing but I imagine people from more prestigious colleges & sixth forms would have been aware earlier and had help studying for it. Or even had private tutoring specifically for it.
yeah that was super weird. Why write an article about the merits of shell tools if you put some python in the mix...
Show HN: 'Concise' an attempt to bring Functional programming to PHP
Inspired by my exposure to functional programming in last few years, 'Concise' web library is built to help PHP developers explore functional programming.

I started my web experience as a PHP developer years back and stopped using it around 4 years ago.
During this time, I always had an eye on it and never totally switched off. Sadly, what I am observing is extensive use of OO (Object Orientation) patterns which merely added extra complexity and unnecessary abstractions to solve more or less simple problems. It should be noted that a lot of these Objects are created and destroyed in each web request.

Concise, it an attempt to avoid such complexity. This current implementation is quite naive and is more like an experiment.

Interestingly what I learned while doing it was that using only functions instead of classes helps improving the performance. There is a very simple Benchmark with explanation on the Git repo.

Check https://concise-php.github.io. I am quite open to feedback.

Ardeshir
I realize this is a touchy subject, but here goes:

I especially appreciate how there is no talk of innovation or ideas, which in my mind, is what YC stands for. Instead (interpreted as an outsider), a rant on unfamiliar, incumbent (sf?) issues/frustrations. Somewhat obvious that YC is looking for new blood.
I would say this is fairly uncommon and unlikely to hit any given business. But sure, it puts some strain on businesses. It also seems to work fine. We have companies of many different sizes. I haven't heard a lot of complains about it.
White space killed an enterprise app (and why data density matters)
I live 60 degrees north, where Aurora are common but usually underwhelming, difficult to distinguish from clouds in city lights. But when a big solar storm hits, it's a spectacular show even this far south.

Further up north they are more common and more spectacular.

And it's definitely green and doesn't look like anything else when it's bright enough.
Maybe flying a Russian airline is a good way to insure you won't get shot down flying over Russian / Ukrainian airspace (which is hard to avoid if you're flying Europe to Asia)
How? The sabbatical is unpaid.
I thought this was a neat demo of building up a command with UNIX tools. The python inclusion was a bit odd, yes.

I learned about sys.stdin in Python and cutting characters using the -c flag
Specifically tied to this discussion: extstore is free on memcached, meanwhile you need to pay for Redis Enterprise if you want similar functionality (Redis on Flash), as far as I know.
How about Wordpress? What you're describing sounds to me like the standard structure of a blog with comments.

Twitter is a weird sort of blog platform.

It is chaotic by design: the chaos is consequence of its distinguishing features. Everyone does get their own 'mini HN', i.e. a forum. But they lack the tools to rule over that forum. It's idealistically anarchic. Everyone's expected to get along peacefully, totally in public. There's no ownership over threads.
Also this drama by Bryan seemed over the top: https://news.ycombinator.com/item?id=6845351, http://www.joyent.com/blog/the-power-of-a-pronoun
Internet Issues and Availability Report 2018–2019
> Can you even imagine 21st century university architecture department that didn't cover ADA compliance? That'd be unthinkable.

I can easily imagine it: architecture departments from universities in other countries don't necessarily have to cover compliance with USA laws.
Asia. China's aviation industry had hockey-stick style growth since 1990, and is expected to overtake US volume by 2022 (ignoring economic peril): http://knowledge.ckgsb.edu.cn/2017/04/17/airline-industry/ch...
Vim for beginners
Yes, indeed, although, I guess, the knowledge that you can go back and pick-up from where you left off is sufficient security for some?
I think you mean SQ / SIA / Singapore Airlines. South African doesn't operate any A380s.
That sounds extremely complicated because you have to do the vast majority of work yourself.

>So there's no impedance mismatch, and no need for the vastly more complicated code that is needed to bridge it.
Serializing arbitrary data structures is far from trivial, especially because JSON doesn't support references natively and therefore things like cycles are impossible without adding IDs yourself which is incompatible across JSON parsers. The naive way to serialize objects to JSON also tends to cause duplicated objects for every reference.

Or you can just use any SQL Database and use an ORM, write your damn Domain Classes [0], call .save() when you want to save and then query the damn thing [1] and if you want eager loading you can configure that too. Honestly it's so frictionless I don't see why I should bother with whatever your preferred workflow is.

[0] http://gorm.grails.org/latest/hibernate/manual/index.html#do...
[1] http://gorm.grails.org/latest/hibernate/manual/index.html#cr...

I'm sure most complaints against ORMs happen because newcomers, who don't have sufficient knowledge of relational databases, try to model arbitrarily complex objects that cannot be mapped to a relational database (and not to JSON without extra support by the parser either) or because they think they don't have to write queries at all. In other words: they are fundamentally trying to swim against the stream and then blame the tool. If you know of the limitations of relational databases then ORMs are just a tool that saves you time and lets you avoid boring work.
> I am starting to realize that the Unix command-line toolbox can fix absolutely any problem related to text wrangling.

Am I the only one who thought, "No shit, Sherlock"?. This is a fundamental of UNIX that many people don't seem to grasp.
Please correct me if I’m wrong, but a major problem I see with many train systems is relatively low utilization of land. Most of the time, train tracks are empty, awaiting an incoming train. Roads, in comparison are far more utilized. For any given foot of train track or road, a car will be passing over that road far more often than a train.

In popular US corridors where real estate is at a premium, that can be significant.

In our current economy, I simply don’t see how building new trains can be economical or even efficient (frok a traveler usage of real estate perspective).
Shorter still:

sort -u < list_of_numbers
Because you are guaranteed to return to your existing job. Sure, you’ll need to use savings for those six months, but you know you can go back. That’s not nothing.
Wow. That is quite the deal!
Military Families Report Major Problems with Privatized Housing
Everybody realises this at some point. Nobody ever thought "I can use this for anything" when they first saw a shell. It takes time.
There's a point at which the time spent boarding becomes too great considering the time in the air. The A380 is a large plane, and you really need 3 jetways to board it in any amount of reasonable time. The mentioned routes are mostly operated by 767s, 787s, 777s, or 330s. The 767 is the perfect plane for the route, and the 330 isn't half bad. TPE-HKG is another example of one of these super busy short routes.
I've recently made a discovery that pleases my petty side.

You know how they usually give you several questions to solve, even if you're quite convinced you solved a question correctly?

Turns out if you click randomly, they keep showing you new questions as well. If, after a handful of purposely wrong answers, you answer one correctly, they let you through.

I now purposely mess up the answers a few times. It seems neither slower nor faster than actually taking the time to do it right, but it takes less mental load, and it makes me not feel like doing slave labour for a machine.
55378008
Parental leave is paid. If they can't survive 6 months unpaid leave from a worker, then they got a problem. The system with paid leave works fine in all of Scandinavia so how could unpaid leave not.
I'm actually interested in how much did that affect any flight plans in the long term. Do any airlines use another route of going over potential conflict territories is the most economic? I know there was a lot of rerouting immediately after the incident.
http://porkmail.org/era/unix/award.html

now, I'll wait for someone to post a link to the "UUOC award" award
Agree on the hard part. Fan out models like this with the same content is "easy". Getting unique content to specific users in an efficient way, in scale of 100.000 users plus, that's hard.
I'm not trying to defend Bryan Cantrill. Far from it.

I think people in silicon valley often forget how privileged they are. The application question is basically asking

What have you personally done in your life? Why should we give you a chance? I think Bryan Cantrill suffers from a lack of perspective. Like if you ask Taylor Swift about how to be a successful artist and she says just follow your dreams and everything will fall into place, I imagine Bryan hasn't had to justify his personal contributions anywhere in a long time likely because they are just obvious and do easy to see. Now compare that to someone like me who has only worked on line of business applications. I try to be honest which in my mind sounds like I'm being humble but from the other side it just sounds like I'm unaccomplished and have poor listening/comprehension skills.

In any case, I think this thread needs to be less about Bryan Cantrill and more about YC.

Bryan Cantrill's Wikipedia page says he asked a kernel developer if he had ever kissed a girl as a one line reply to a technical discussion. My instinct whenever I hear accusations like those by Valerie is to say maybe there's a different perspective but I don't think there is one in this case. Regardless of all this (and his association with a company that stupidly offers lifetime hosting to paying members and later yanks it which is essentially fraud), I think the arguments he makes stand on their own. These aren't arguments I could make because I'm a nobody but I'm glad someone is making regardless of how flawed they are.
The problem with the A380 is not really it's size. You're right that there will always be big cities with slot-constrained hub airports where big aircraft make sense.

The real problem is that the A380 is falling behind other modern aircraft on its operating costs.

Being able to carry an extra 100-150 pax is nice, but when each seat costs 20-30% more per mile in fuel compared to a 777X or an A350, then most airlines will choose the more fuel-efficient models.
I’m curious how they enforce the policy of allowing you to keep your job after you’ve left for six months. What if the position you previously had is no longer needed or has been replaced by automation? Would they be forced to rehire you for a period to satisfy the rule with the intention of letting you go later?

This doesn’t seem like a good long term solution. A better one would be several weeks off, then half time work for several more months. It allows you to keep you head in the game, make money, and take care of your kid.
iLoveYouTrainer – Test your honesty-factor when saying “I love you”
The article is spot on. Some finds it counterintuitive that SAT solver often can solve problems with redundant clauses (hence larger problems) faster than minimal ones. But you can find the proof faster if you have appropriate lemmas. Since lemmas can be derived from axioms, strictly speaking, all lemmas are redundant. But they help.

Note: the author maintains a state-of-the-art SAT solver.
I don't expect a 25 person company is paying well enough that 20% of their workforce would take 6 months off unpaid all at once. In the unlikely event that it does happen, use their salary to hire short-term replacements.
> that can dramatically improve how much crop food we save from damage

We already have tons and tons of food rotting in storage all the time. Lack of food is not a problem in the western world. It is not a useful argument.
Plotting hearts with Python and C
There is the same kind of unpaid leave in France to create a company, but it's for one year (and possible to extend it for one more year): https://www.service-public.fr/particuliers/vosdroits/F2382 (in French)
These were the first two planes off the line and they were significantly heavier and performed much worse than most of the other 380s. Singapore Airlines got rid of them for that very reason, while still taking delivery of new 380s. This is why they weren't attractive to any buyers.

Note one of the early SQ 380s is now operated by Portuguese charter airline Hi Fly.

I wouldn't count of the first two's demise being indicative of secondary value of all aircrafts of the type.
Yeah, a lot of the storefront ones are just plan hit things randomly until it lets you through - how am I supposed to know if a building with some writing on it in Korean is a store or something else? Are you supposed to include the poles in traffic lights or not?

The V2 was just annoyingly badly designed because the questions were badly put.
This [0] the most complete post I've read on the topic.
Lays out all the relevant tools.
Spending some time going through each tool's documentation/options, pays off tremendously.

[0]: https://www.ibm.com/developerworks/aix/library/au-unixtext/i...