skysight-inc/HackerNews huggingface dataset:
> You can get model aircraft jet engines with enough power for this.[1] Various human-carrying craft have been built that way, such as the Zapata Flyboard.[2] But the engines have a lifespan measured in hours and not enough reliability for carrying humans. That's why all the demo videos of these things are over water, or tethered.

All engines have lifespans measured in hours. Jetcat engines have service intervals of 25-50 hours, which usually involves bearing replacements, inspection, cleaning etc.

Non-RC small engines have very normal service intervals of 1000s of hours, right on par with large jet engines and as long or longer than piston engines. The JFS100[1] is slightly more powerful than a JetCat 550, and is a bona fide helicopter engine. Helicopters[2] have used small <100 hp turbojet engines for decades. They're cheap and incredibly reliable. Those JFS 100s go for <$4,000.

They don't have the same power/weight ratio as jetcats because they're used to drive props- there is no demand for tiny jet engines because props are more efficient and jets require too much reduction for slow speed personal aircraft.

> The video is a bit suspicious. It's very quiet. You can hear the boats over it. It doesn't blow stuff around. It doesn't move his clothing. It doesn't ripple the water even at low altitude. Other videos of small jet engines are very noisy and have lots of jet blast.

This is excessively incredulous. The flyboard is well documented and perfectly reasonable. These people balance on jets of water without computers and jet engines are built to be trimmed in to match each other closely. Otherwise you'd have planes going in to flat spins when they pushed the throttle too hard.

He never goes near the water in that video, it's loud as hell, the only boat you can hear is a cigarette boat (which is basically a drag car), and he's wearing full leathers. Of course they aren't rippling. How would they fake a video like this[3]?

[1]: http://nyethermodynamics.com/jfs100/index.html

[2]: https://www.youtube.com/watch?v=_VxwRo9jzwg

[3]: https://www.youtube.com/watch?v=WQzLrvz4DKQ
Yes, it was in the official police report. The driver was watching "The Voice" on Hulu at the time, and "...looked up just 0.5 seconds before the crash, after keeping her head down for 5.3 seconds while going 44 miles an hour".
Here is a basic principle of public key infrastructure: anything signed by one CA can be signed equally well by another, unless the code is designed to give one CA special permissions (like EV certs, in the HTTPS PKI).

You are wrong on the facts that there is a "single CA" - there is _KEY in addition to _NSAKEY.

So, this brings me back to the point I mentioned at the top of the thread: why didn't the NSA just demand a copy of the private key for _KEY instead of a separate key? A separate key always carried a risk, and also required a rebuild - handing over _KEY could have happened immediately. If _NSAKEY has special permissions, can you point me to where in disassembled CAPI code / leaked source these special permissions are implemented, and what they are?

Your conspiracy theory is "The NSA is evil and also stupid." This is a more complex and less likely, and less worrisome conspiracy theory than "The NSA is evil." If the only thing we have to worry about from the NSA is things bungled as badly as this alleged _NSAKEY backdoor and the actual Dual_EC_DRBG backdoor (which was noticed by cryptographers basically instantly), we have nothing to worry about. That doesn't seem like the rhetorical position you want to take.
I think it all comes down to the required skills. If you don't have a degree, you have to convince the company in other way that you have what they need. Especially in software development it's pretty easy to show your skills.
>This is a total puff piece

This article is written in their inimitable light-hearted/self-deprecating style by injecting some dry humour into a story. It is not meant to be taken seriously, as evidenced in the comment section.
U.S. economy adds just 20k jobs in February, well below expectations
By that standard there’s no difference between your computer and most of the consumer electronics market.

You’d be astonished of how mant things run flavors of unix
My county library has a poor electronic collection. Still, I tried to check out a book and got put on a waiting list with 30 other people. That was before Christmas. I haven't heard anything else about it.
Which is why I didn’t say that all software engineers at Apple have college degrees, or that this was a hard requirement to be hired. I’m just saying that it is very, very likely that most software engineers at Apple have degrees.
Eh? It reads like a book translated into Chinese. It's probably one of the most not-Chinese Chinese books you can read.
How one entrepreneur is bootstrapping a mentorship platform from Greece
I wonder if it's legal to use Jet turbine in my car to produce extra acceleration for overtaking during commute.
Been reading his blog for a long time, but didn’t know there was a podcast. I’m unable to find it though — do you have a link?
Your credentials matter a lot less when you are the founder.
There was a very active theory on HN that stated, Microsoft did switch to Chrome just for the V8 Features especially regarding Desktop-Apps and web rtc. The next new thing will probably be Skype (for business) to switch to electron.
For industry/real world work, TensorFlow is best in class. It is far superior to any other existing framework. I agree that there are always areas for improvement, but the way you worded your comment makes it almost sound like TF is pretty subpar compared to other offerings.

The reality is more, TensorFlow is really the only option you have if you don’t want to build everything from scratch again. Whether that’s a good or bad thing, well at least it’s because TensorFlow is actually a good product and not because Google is preventing others from building their own / pushing others down.
And the per person-mile carbon footprint of a machine powered by multiple VTOL jet engines is...?
"In 2015, nearly 21 million people relied on community water systems that violated health-based quality standards"

The number given for water access issues in China was 3.5% of the population (which is 'infrequent'...)

That's why I ventured that the situation there is not that bad proportionally to population.

Why arguing on something that isn't even the main point of my initial comment... It's exhausting. It also feels like an attempt at denying issues.
Got a link to the podcast? I’m unable to find it in Overcast or Google.
Colleges are turning into 'adult daycare centers'.

Encouraging people to go into six-figure debt, so that they can get a degree that has zero marketability (except of course to continue on in college), is a deeply cynical enterprise. At least drug sellers and casino owners are open about what they do.
Degrees do often make companies more inclined to let you show them your skills, though.
The thirteenth amendment exists for a reason, and as a "neo-Kantian," you should be into treating rational/human beings as ends in themselves. A country where you're allowed to sell yourself into slavery or indenture is one I can't support. So there are limits on what "deals" you can make.
Is LinkedIn selling your phone number?
Beginning this week, I have started receiving 4 or 5 unwanted, cold recruiting calls a day, from offshore. LI is using your phone for account recovery, so they say.
Confusing Your Pair? Draw Them a Diagram
In countries like China where the driver has more fault than a pedestrian and many aren’t following the rules (drivers and pedestrians), what winds up happening is that overall cruise speeds are greatly reduced and everyone is constantly on edge. I joke that the cars never really stop for you but everyone just slowly swerved out of each other’s way.

It can work, it’s just less efficient.
Advanced Customer Lifecycle Analytics with HubSpot and Panoply
Ask HN: Why am I feeling dumb with PHP?
Preface: pure opinion based, no rant, no hate, no everything.

I started my actual job 2 years ago, so i'm basically using PHP every day.
I'm pretty good at it, but sometimes i feel that PHP is making me very dumb about programming.

I feel like i have to deal with tons of quirks and nonsenses, and i feel completely powerless when i have to think how to program. I feel like i have to think twice before solving a problem that in C i would solve in a more "natural" way.

Sometimes i have to touch some Javascript too and it makes me feel the same way, plus async stuff to me is so unnatural that i hate the async concept itself.

Do you have some similar experiences about X programming language? Let me know :)
Just curious, how does apple's recruiters shortlist people if they are not looking for college degrees. We need some criteria for sorting through the haystack..right? Or is it just a standard motivational talk which we just read ,feel good, nod our heads and move on?
>> 225kUSD/yr in usa to 95kEUR in Europe

95k is about 50k after taxes and other no opt-out insurances and social taxes. Most EU countries have VAT 19-24%.

I usually compare USA with Western Europe using factor 2 (3 for Eastern Europe). So, if you get $150k in USA, you have to get €50k in Budapest to have similar quality of life.
The advice here boils down to: don't just vacation, quit your job and take up a freelance/remote worker lifestyle for an unknown period of time.
In that case the sheep starve, because the grass is a wolfs private property.
Tesla also launched as a car for the 1%, but now they have learned enough that they are trying to introduce a model for $30k. Will the Tesla $30k coming out soon car be great, we don't know yet, we might have to wait 10 years before there is a great $30k electric car. What we do know is that you have to try before it happens, and the 1% buying toys has funded some really awesome stuff that has eventually come down in price enough for everyone to afford and enjoy. This motorbike might be $380k today, but how much could one cost in 10 or 15 years?
AirBnb used to be great, but in recent years their huge platform fees have put me off.

I've had great success finding good places to stay by using AirBnb as a catalogue, then Googling the property and booking through the owner's own website. Last year we stayed in a lovely house in Bruges for less than half the price it would have been if I'd booked through AirBnb.
The problem isn't the lack of fresh water sources, the distribution network is riddled with pathogens. This is due to poor design and workers taking shortcuts (not performing sanitation steps to meet deadlines).
This is a silly statement - I’d say a lot more jobs currently tied to NOT needing a college degree will be automated out of existence. Jobs that require creativity and critical thinking will be the ones that survive (I believe that’s the quote from the recent Last Week Tonight). Those tend to be college educated jobs.
They should rename it Skype for Chrome.
More big toys for rich boys who run the tech world.

YC can spend their money how they wish, but I wish this moonshot was something of actual use to more people.
I think it would've been nice if you had shown a UNION or OR 1='1 attack as well. Many database drivers/packages will block multiple queries in a single statement :)
Alternatives to Google Url Shortener
Yes, usually 10-20 Euros a workday.
>now with GDPR would of course be illegal with actual consequences if it contains data about EU citizens.

which, as an EU citizen, I can confirm it does
> In Microsoft's defence, just because its functional, doesn't mean they're ready to spend time supporting it on other clients from day 1.

It’s on the public web. It should work in all major browsers.

EOT
NFL cheerleaders subject to 'stringent' rules on weight, personal attire (2018)
UNIX is not a mainframe OS. It was developed for minicomputers. As was VMS, by the way.
Chinese won’t tell you they are working on the next big thing. Oh let’s don’t put ride sharing and other tech nonsense into the picture. “Shared bicycle” startup scaled up in China the first time and they just burned billions with close to zero values
The thought that splits could only occur at "important" junctures in our insignificant lives is ridiculous and absurd.

Therefore if such things were to occur they would have to be happening at every infinitely small moment of time for every particle and therefore there would be infinite alternate universe's in fact more universe's than the collection of all types of infinity
> example is somebody who decides to suicide right when you're driving by.

a friend of mine had this exactly issue. he was driving at the speed limit, as usual. an old lady just jumped in front of his car.

at first, he got a murder charge then it was dropped when the prosecutors saw on the road cameras that the old lady 100% wanted to die.
Inclusion of the term "IoT" was deliberate, monitoring water (distribution, use, misuse, quality) remotely and at a scale precisely is the problem that IoT can solve.
I understand that, but I still find that to be extremely high. I'm in Denmark, a country that's known for high cost of living and high saleries to match, and I wouldn't expect a senior dev/ops/sec position to pay more than half that.
“As We May Think” essay, anticipating many aspects of information society(1945)
I've noticed a correlation between companies that are overly interested in credentials and those that will institute open plan offices, draconian intellectual property regimes, and other employee-hostile measures. No loss there!
Not a day goes by without western media conglomerates publishing an article about how the Japanese are going extinct and need mass immigration now.

I see some local news talking about some minor labor shortages with convenience stores and whatnot, but opening up BBC or CNN you'd think Japan is on the brink of absolute collapse due to being underpopulated with only 120 million people on a tiny, mountainous, barely arable archipelago.
I saw your comment and thought to myself I haven't seen any emails from LinkedIn in a while. Then I remembered why - https://i.imgur.com/J4d4VLk.png
That was total comp. I was a Solutions Architect at Dell EMC. But I worked 60 hour weeks, did the usual client facing bs, used my own time to fill out reimbursement forms yaddayadda. Id rather make 80k in France any day of the week.
I just switched from Android to iPhone, and Gboard on iPhone doesn't have the translation function. It also doesn't have multiple languages -- if I want to switch languages I have to exit out of Gboard and use the default iOS keyboard. Anyone know why these features for Gboard are missing on iOS?
I already covered that quoted segment. The 21 million figure includes all infractions of any type, regardless of severity.

The primary problem in the US is aging infrastructure in sparsely populated rural areas, as stated in the study the USA Today article quotes from. Nearly the entire US gets a good violations score in terms of low instance counts, except for Oklahoma (they show an extreme number of violations), rural West Texas (also intense), and a few isolated rural pockets in eg California and Idaho (~1/10th or fewer the violation counts of the OK & W.TX examples). The OK and West TX examples are no doubt caused by the polluting energy industries there.
>> My net income after taxes, social contributions, etc is 65% of my gross salary.

It certainly depends on your income?
Where did YC state it's the "biggest problem in the world"? Where did YC use the term "moonshot"?

This is just one of about 200 companies YC has funded in this batch alone. Some of the other ones are working on humanitarian problems, and over the years YC has funded many non-profits and companies working on humanitarian problems, as well as putting huge funding towards research into basic income and medical challenges.

There's no opportunity cost issue here: YC seeks to fund every project - commercial or humanitarian - that seems to have some chance of succeeding or leading to some kind of valuable breakthrough.

You should point to a case where they've failed to do that if you know of one - I'm sure YC would like to know about it.
This is a cynical statement with no truth behind it. How do you explain the stat that college grads make a million dollars more over a lifetime? Almost everyone on Wall Street has a degree, would you call that zero marketability? Doctors all have degrees...zero marketability?
As someone who went backpacking for three months when I was recently bankrupt and only had a few thousand dollars I had saved over three years because I was afraid to spend money on anything but food, I can assure you that it does not require any particular economic privilege, only a severe case of not giving a fuck about your future.

It worked out for me because I met my wife who was also traveling and came back and lucked into a good job, but that was by no means guaranteed when I left.

Of all the people I met at hostels in guatemala, there was only one that I would say was really privileged, and a lot of people who simply prioritized travel over everything else in their lives.
It is irrelevant how different the lighting might be in other places or at other times.
What I took from this quote was that IBM and even DEC were shipping enormous devices that were engineered like digital tanks, with redundant data paths, redundant power supplies, somewhat hot-swappable component cards, and a guarantee of several nines worth of uptime, when combined with their first-party operating systems. Breakthrough home computers, by contrast, tended to emerge from "good enough to play games and play with balancing your bank account," having a strong emphasis on arcade graphics, but not so much on reliability.
Disproving stuff is a good way to "fan the flames" of your career but you have to have some reputation in the first place. Otherwise you're a quack amateur which doesn't work well with others, just like you'd be in any other field if you picked fights with the wrong people too soon.

It also turns out that validating people's preconceptions and getting grants is a great way to build credibility via "social proof".

The truly skilled PIs can develop a popular idea, make it accepted in the field, then dramatically disprove it once the "bad" researchers start piling on! These masters can usually be identified by massive grants, sending students places(careers) to build relationships/incur debt of favors over years, writing bestseller books (ghostwritten) etc. And these are the people whose ideas everyone repeats.
This is true due to the cost required, but how much of the cost is largely due to credential inflation?

Much of the population would probably do better with trade training, but we've sold it to "everyone must get a 4 year degree" and it's likely doing a lot of harm to people who are better served learning on the job or in apprenticeships than college.

I think it's a good argument to have. I'm hopeful that online education and more sensible thoughts toward future debt loads among prospective students will start to chip away at the absurd costs of higher education these days.

The only way to do it though, is if people have options.
Is that nested-define common racket style? I know it's been legal, at least since R4RS, but I've never seen it actually done.
Regardless, they're not based in Europe. Unless they do business in the EU, they can't touch them. This is due to the fact that extradition requires something to be a crime in both countries, so unless the EU has assets to seize, nothing they can do.

And if they try, any American court will be very leery of setting the precedent that Brussels can tell Americans what to do in any sense, particularly with respect to data stored on their servers.
Let's take a look at some of the ingredients that led to this:

1) A pedestrian crossing the street likely expected an approaching driver to see them and slow down. Typical behavior on the part of the average pedestrian and the average driver, whether it's a misdemeanor or not.

2) An engineer at Uber made the decision to put tech on the road without emergency braking capabilities, likely using the justification that a safety driver would be there to intervene when needed.

3) A safety driver in an autonomous vehicle that behaves the right way 99% of the time grows complacent.

The pedestrian may have been jaywalking and the safety driver may have been abdicating their duties. The safety driver especially isn't an innocent actor here. But the party who has the most responsibility is by far the engineers and managers at Uber.

This set of circumstances was completely foreseeable, but they still decided to take the risk and put this technology out on the roads. I for one don't want to be a part of Uber, or anyone else's great experiments. Spend the money, spend the time, and figure this out in a controlled environment before subjecting the rest of us to the negative impacts of your selfish ambition. Someone at Uber deserves time in prison for this.
Like it or not, async is the future.

If AJAX was not asynchronous your browser would hang up every time some bro put an AJAX call in their web site and it was slow to reply.

If you had somebody developing exploits for memory errors in the C code you write, C would make you feel dumb too.

Long term when we talk about "mixed initiative" systems where some things happen immediately and other things happen on a human timescale that is going to be very async and will require the development of new tools or the rehabilitation of old tools for it to become mainstream.
Stay Safe Women's Day 2019
.... dude why be like that ?
You perfectly know he was talking about gender-studies, "art stuff", "business stuff" (depending on the country) etc.

People who go doctoring have it good (& hard).
Its not high if you live in NYC or SF. Its above average but not by much.
Average physician has lower lifetime earnings than a UPS driver. Most of the difference comes from time spent in training instead of earning, and ... financing a giant pile of school debt.

If one of your exemplars has lower lifetime earnings than a UPS driver, your point may be on shaky ground.
Clearly this was not taking the Zuckster seriously.. it was clearly sarcasm...

< Another set took Zuckerberg entirely too seriously:

I am not a stock market
person but the fact that
Facebook’s stock hardly
budged on a day that Mark
Zuckerberg said he planned
to pivot the company to a
totally untested new
business model seems odd
to me

— Casey Newton >
I have a college degree and I value it a lot. I learned a lot there, not just theory but overall a mindset how to learn, analyse things. You cannot say that a college degree is priceless of course at the same time you cannot say that those without it cannot do anything. It just depends on what a person wants, for me learning was actually fun.
for your hometown - being "knowledgeable" of the geography, the history, the people, the culture, and the economy.
WebTech, identify technologies used on websites
But that's a big if because phishers will always aim for the weakest individuals in the flock.
Author here.

I don't have any direct experience with Menhir because I haven't tried to write a compiler in OCaml yet. It does seem to be one of the better parser generators and is frequently recommended. Skimming the docs, its seems to be lacking in these areas:

* Concrete syntax trees (as you pointed out)
* LR(1) will probably still be more restrictive than I want
* Unicode support (defaults to ocamllex, requires custom code to use ulex)
* Intransitive Operator Precedence isn't supported (though it does have regular precedence levels and associativity)
* While it looks to have better error handling than most LR parser generators, I suspect it still isn't where I'd want it to be.

I suspect there are other issues, but I don't want to go any further beyond my knowledge base than I already have. I've been thinking about writing on this topic more, if I do, then I might address this more.