skysight-inc/HackerNews huggingface dataset:
How do you know that students will never use a given lesson? Which ones are they? In this case what you want as a parent (and taxpayer) is no more or less valuable than what I want as a taxpayer. This is all opinion.

What kind of a return do we get on that 600bn?

Personally I think part of the value of education is that it does teach students things their parents wouldn't. Why should children learn only from their parents?

You're going to have to be more specific than putting words in the mouth of a hypothetical politician for me to find your argument remotely compelling. As a member of the public and a consumer of public education I do not consider it to be only job training or a way to support the economy. There are less tangible benefits, especially in higher education.
Agree, same view of the flame of the same booster, indicating it's the same camera on the same booster... the glare shows up in both feeds.

https://www.youtube.com/watch?v=wbSwFU6tY1c&feature=youtu.be...

If it were two different cameras we'd see two different landing pads. In the end of the video both feeds are coming down on the northern pad.

Edit: Here's the sat image from december with notes added https://imgur.com/a/u6sLs
Apple is sending some developers ad spend and install details for others' apps
Fair point, updated with a link to the original audio from the webcast. Was just trying to give credit to where I found the source.
Center core is gone, didn't land successfully. Well it was a test and most of the flight succeeded https://twitter.com/kimballclark/status/960986447770656768
The fractal part looks to me like it's probably better colored as a very deep green. It likely would flip eventually, but reached a simulation time limit first. There's a few other small areas that are near green streaks that are also colored in white, too.
That's not really their call because of ITAR.
I wonder if their internet constellation would help at all with that.
The POST requests do refresh the page for the poster. But not for the viewers. For everyone else it just streams the HTML to them using chunked encoding.

It's written in Golang and hosted on a free Heroku instance. I'll probably upload the code somewhere after a bit.
The site doesn't load for me. Here's an archived copy:

https://archive.is/srQvw
Shortage? That's not how demand and supply works.

Since the job doesn't require any specialization (which could take years to master and thus might cause a shortage), it should be easy to fill such positions from the large unemployment pool if employers started paying more to compensate for the missing Mexicans.

But it's only a shortage of people willing to do the work at shitty prices.
Earlier in the feed they showed some ships that were presumably towing the drone out. I'm sure there are some that are within a mile or two.

To your second question, how about a camera on a boat closer in with a hard line to a boat farther out with the satellite connection? You act as if sending a video feed is an unsolvable problem despite them beaming living video through the rest of the mission when they are in space.
My uber is here, in the final frontier.
How to build a Hacker News Frontpage scraper with just 7 lines of R code
No, it's a Martian transfer orbit, albeit without Mars at the other end.
Agree it is strange. I love their "How Not to Land an Orbital Rocket Booster" film. https://www.youtube.com/watch?v=bvim4rsNHkQ

Watching the countdown net it seemed plausible that they didn't know whether it had successfully landed either.
NASA money put to good use.
Recording signed time attestations onto a blockchain, establishing BFT consensus of the current time, using the blockchain consesus as an authoritative source for the current time.
Tell me more, oh king of non sequiturs
Yes, that was pretty SF.

So, whats to stop them attaching an additional two (or more) to the existing rocket now that they have the basic synchronization worked out.
For a more detailed explanation of how so many explanations we see for lift are wrong, see the page "Bernoulli and Newton" from NASA: https://www.grc.nasa.gov/www/k-12/airplane/bernnew.html

It's part of their excellent "Beginner's Guide to Aerodynamics" site: https://www.grc.nasa.gov/www/k-12/airplane/bga.html
They were terrible, man.
Any feedback is super appreciated. We would love to hear what you think. You can reach us out at team@supermedium.com or real time chat on supermedium itself (via intercom) with any questions, suggestions or criticism.
The background is the inside of the fairing.
Unless I'm mistaken, it's not on a trajectory out of Earth orbit currently.

It is in a parking orbit, where it will sit for a few hours and then will reignite and will be set on a trajectory toward "martian orbit".

IIRC currently they are testing (or proving depending on how confident they are) that they can have the second stage sit for several hours in space before reignighting.
Apologies have nothing to do with bugs.
I like everything about private space exploration except this: when we sent the Voyager golden record to space, we consulted with the great minds about which were the important landmarks of our civilisation.

In this model, it's all about idiosyncrasies: the Voyager record had the Vitruvian Man, this has an astronaut on a sports car and largely-irrelevant sci-fi stories.

Of course, private space probably means the whole timeline comes faster and private associations are soon launching Dostoyevski and Pollock too. Still, this payload is culturally cringeworthy, as much as the sheer engineer accomplishment must be lauded.
I watched the launch and landing from the beach. The booster recovery was pretty amazing to see
The nearby ships with the people that weld the booster to the deck for transport.
Sure it's easy a few hundred years later to look back and say that it was a great idea, but what amounts to a multi-generation exile was probably a bit overkill for many (not all) of the prisoners.
That's some kind of retroactive founding thing; Apple just recently joined after AV1 was completed.

http://web.archive.org/web/20171226163021/https://www.aomedi...
[citation needed]

I can't help but feel that your statement is highly misleading or possibly outright false. The US population is estimated around 323 million. That would make social safety net spending at an average of $8,173 per PERSON per year.

That's incredibly difficult to believe.
Absolutely insane. I had goosebumps throughout the launch. Well done SpaceX
Lost, or lost video feed?
> old JBL dock

FYI the old iPhone/iPod docks can easily be upgraded to bluetooth for about $10 by buying a bluetooth adapter (powered by the dock, so apparently a few docks don't work).
Apple sees 'strong demand' for replacement iPhone batteries: letter
In most "oh things are terrible in America" matters, I believe other countries are about as bad, but have a tamer media. But police misconduct really does seem to be worse in America. For reasons I don't fully understand.

One part of it is probably guns: even in states with strong gun control, there are plenty of them in the hands of hoodlums, so voters appreciate the Dirty Harry approach to dealing with them.

But to me that doesn't quite explain why cops seems to have such semi-formal impunity (see for example http://marginalrevolution.com/marginalrevolution/2018/01/get..., http://marginalrevolution.com/marginalrevolution/2018/01/pol... and http://marginalrevolution.com/marginalrevolution/2018/01/pol...).

Of course we can guess various reasons, voters like police, cops stick together etc, prosecutors and police work together etc. But those things are true in other countries too.
Facebook may be plotting to poach YouTube’s creators
In China, the data your car collects about you is for sale
That could just mean they lost the feed.
This 100-year-old creative agency now connects startups with global brands
Apple traditionally ignored non MPEG codecs[1], VPx is ignored for the same reason, and not due to being developed by Google.

[1] i.e. Vorbis, Theora, Flac, matroska containers, etc. Opus is supported in Safari for WebRTC because they have to, but is completely unavailable in other contexts.
What has happened is that "we" have divorced software from hardware by adding an increasing number of abstractions.

There is a increasing number of people that never had to deal with boot sectors or config files to get a computer up and running, they just hit a button and a few seconds later it lights up in massive colors and sounds.

And the only languages they know are web related languages, because that was the thing to know when they got interested in computers. And as the saying goes: When all you have is a hammer, all problems looks like nails.
Tips & tricks for creating reusable UI components
They were looping the fairing deploy. The "background image" you see is the inside of the fairing: https://www.instagram.com/p/Be3m_LNgOYY/?taken-by=elonmusk
And I have to deploy a few web services tomorrow, woohoo... Elon has created a vision for generations to come, that is why today is so historic.
That's what happens when everyone is anonymous and the text scrolls fast, you can't even have a proper conversation so those types of people leave and you are left with a trollbox.
Meta refresh has been used with WebCams for ages.

[1]: https://en.m.wikipedia.org/wiki/Meta_refresh
"We lost the centre core" at 38m27s
https://youtu.be/-B_tWbjFIGI?t=38m27s
There's a non-hosted webcast which, I believe, is just rocket footage.
> it carries huge, negative implications in the forms of HCI (not having consistent interface elements on the user platform)

This is a double-edged sword for multi-platform apps, but isn't a drawback for monoculture environments.

> Can someone please give me some arguments as to why this not only seems like a good idea, but also why it's the best tool for the job?

For a certain class of apps (such as IDEs), its a great idea due to the ease of extensibility as well as making multiplatform releases effortless. I doubt VS Code would have been available for Linux had it used a non-web-tech stack, and it has displaced PyCharm for some of my lighter tasks. PyCharm is written in Java, so it's also not native, but it's the best IDE in the world, IMO.
> I would rather do a UI in QT than Javascript.

This has nothing to do with Javascript. It's much easier to do complicated UI using a web browser's layout engine than it is using one of the above frameworks. For really simple stuff, yes it's about the same, maybe even easier with native UI, but if you ever need to do something outside of buttons and lists, things will get ugly fast. On a browser on the other hand, you can very quickly implement any component you can think of using well-documented CSS rules.
The quote from the video is: "We lost the center core."

For those like me unfamiliar with the terminology used in this context, is this wording reserved for situations where the rocket is destroyed or could it also mean they lost contact/video feed with the center core?
What's the make and model?
"It's going to end with cereal crop farmers committing suicide"

Do you think cereal crop farmers are paying migrant workers with scythe's to harvest their grain?

"Or they can start building the robots."

What do you think a combine is?

"well-capitalized startup "

Is an angel investor going to compete with government subsidies?
In reality usually neither side is flat.
I absolutely love that Musk is putting a car into Mars orbit. Assuming mankind doesn't have an extinction event (or dark ages event), it is extremely likely we'll populate the solar system over the next millenia. In 200 years, Martian children can look up in the sky and know that one of the quickly moving visible satellites is a hilarious, old-Earth car. Depending on how accessible orbit is from planets over the next couple hundred years, it could very well be some sort of space station museum.

Or, imagine we hit a dark age and bounce back, and this event is lost to history. Five hundred years later we manage to get some people to Mars orbit and they find a fucking car in a capsule with a little mannequin stuffed into it flinging around the planet at hundreds of kph.

All while it's blasting David Bowie over their radios.
Wow, thanks for the contribution.
That sucks. I've always found the hotel/commercial high end ones to be sufficient for my needs.
If you liked that, you might also enjoy this little hack. How about real-time updates without JavaScript or CSS tricks?

http://zesty.ca/chat

(1999)
Depends upon whether you want to perpetuate a subclass that is poorly paid, or have them find a better deal for themselves.
The longer i deal with computers the more brittle the Python ecosystem appears to be.

Yes it may be a wonderful language, but it seems so damned easy to get the interpreter to not find libraries that should by all accounts be right damn there in its search path.
classic example of leaders in tech failing to check their privilege
https://youtu.be/wbSwFU6tY1c?t=1357
This could reference the video feed, was before 1&2 landed?
NYTimes article mentioned their initial target for a heavy rocket launch was 2013 due to being "naive." Safe to say SpaceX isn't all that different from Tesla or Solar City in that regard.
This is a funny trick, and known for ages, except the CSS-based re-ordering of the incoming info.

It's probably not practical for a chat app (DOM just grows infinitely), but it's a great way to show progress of a longish-running process with a bare minimum of means.
It's easy to do.

That's it.

Why learn frameworks and UI paradigms for different platforms if you can just build it once? You can have a desktop app in under an hour if you already have a web app.
Amazon is removing lock screen ads from discounted Prime Exclusive smartphones
Yeah, except that it seems like PySide still doesn't support Qt 5.x according to [1]? While there is a page for PySide2 [2], I can't figure out if it's complete or not.

[1] http://wiki.qt.io/PySide
[2] http://wiki.qt.io/PySide2
https://www.cnbc.com/2018/01/05/spacex-falcon-heavy-launch-a...
ITAR is not limited to just Americans. I work with ITAR materials and am not an American (working in Europe)
Planning travel on the go just got easier
Thanks. That clip is the confirmation I’ve been looking for since the live stream ended. I agree that it’s still an amazing achievement!
I'm hoping to discover a pattern of this behavior. I've seen more than 4 warrants all listing the same untrue facts that led to a judge signing off on the warrant. No proof just hearsay. I will consult with a lawyer. But this came up and I've known this place to harbor people smarter than I, so I figured I'd ask..
One codebase catchall. Most apps need some sort of web version and desktop version. So doing it all in web tech makes sense.

Then as you get familiar with web tech doing it in native toolkits requires you to learn new paradigms and quirks which is a barrier to creating new apps so people revert to what they know (web tech).

It's just that web is so popular so people stick to what they know. Same reason people would use say python with c extensions over golang. Even though go is faster out of the box, if they're used to the python ecosystem it makes sense for them to prototype in python and then optimize with c extensions, they can get something that works with less cognitive friction.
Kalanick agrees: Google was and is “in the lead” in autonomous vehicles
It was awesome. The synchronized landing of both boosters was emotional.

Might be a naive thought, but for a few minutes, you forget everything else. There were millions of people from every nation live-watching the broadcast and everyone was cheering and hoping for the best.

The world seemed at peace during that moment and this is what I love about space exploration and all these great human achievements.
It's nice to see some D ideas make it into C++.

I think that D is kind of like Mercurial: both less popular than some other wildly popular alternative, but we still hope that at least some of their ideas trickle back into the more popular sibling.
I think there is a strong correlation between plain old narcissism and presidential plans.
My understanding from the diagrams they showed is that the orbit is a wide one (oval) around Earth that passes near Mars.
ML Reference: Supervised Learning
He was certainly right about 2/3rds chance of success.

2 out of 3 ain't half bad.
They normally call out "LOS" or "loss of signal" when they lose a video (or any other kind of) feed, but I have heard it on other streams that they say something like "We lost stage 1... signal/camera feed".
A few thoughts:

* Cost. Why hire a separate dev team for each of web, Windows, and MacOS (and in this scenario, you never get a Linux app) when you can hire a single dev team to work on the core of the app with maybe one person to handle platform issues (and you get a Linux app nearly for free, which you wouldn't otherwise bother with)? Hell, you might not even need to hire more people to deal with your desktop apps initially, if you have at least one web developer who is resourceful and can figure out the remaining details.

* Hiring. Web developers are everywhere and easy to hire. Finding someone with expertise in a particular GUI toolkit is harder. Even if you initially don't care about which particular GUI toolkit, after you start building in one, you need to find more people to hire who are familiar with it. (This is also another "cost" item, I guess.)

* Ignorance. My biases are probably showing here, but my impression of most frontend developers is that they don't worry about performance too much, at least not to the level that, say, a C++ or JVM or CLR developer would. They seem to view many performance issues as something to be solved by the Javascript engine or browser renderer. They also likely develop and test their app on a high end machine and don't notice perf issues until users complain.

* Marketing. Visit Electron's website, and then visit PyQt's (or Qt's, though they're a little better) or GTK's. I guess it shouldn't be a surprise that the websites made by people who work on web technologies look better and tend to have better marketing.

* Tooling. Web debugging tools have gotten pretty great during this decade, closing the gap with native-code IDE debuggers, gdb, valgrind, etc. Electron's tooling make it fairly easy to build for each platform. Building a cross-platform app in Qt or GTK requires native compilation for different platforms, which is still, even today, a bear to set up.
The history of the early 20th "progressive" movement was a legacy of legal devices which make the police basically outside the control of local political institutions. Police are civil servants like health inspectors or zoning experts.

These changes were made to prevent the previous situation, where a "political machine" could control a town, appoint their people to the important posts and create a town-wide corruption system, often by tossing boons to the poorer people in the central city (Tammany Hall was the most infamous of these operations[1]).

Of course, one might this replacement system degenerated to the point that you have similar corruption, perhaps even less accountability and fewer boons to the disenfranchised.

But the present order is very strongly entrenched in American politics and given the American system is presently close to a mockery of democracy, the chance of change today looks slim no matter how many egregious appear.

[1] https://en.wikipedia.org/wiki/Tammany_Hall
Man next to one of the boosters: https://pbs.twimg.com/media/DVYYekSWAAEHpTa.jpg

That's nuts.
Yes, additionally fractal trees have a predictable and compact memory structure while LSMTs are more sparse.
Average case for queries is also better for fractal structure and implementation is actually easier.
This. Bugs are a normal part of working on complex systems to tight deadlines. Would a sales person say sorry if a deal fell through? A cold caller if they didn't get an appointment?
Thanks for the explanation. I'm too green to understand this, but I'll try to learn more about it later.
U.S. regulators say they don’t have enough power over cryptocurrency exchanges
Keep in mind these are the same people whose comments you're reading on HN and the same people upvoting/downvoting whether or not your contributions are seen. Pure anonymity sucks.

Also see John Gabriel's Greater Internet Fuckwad theory: https://www.penny-arcade.com/comic/2004/03/19
>you’re sorry, and you did it? that makes no sense

In Vulcan, no. In real life it makes very much sense. We are not one-dimensional cartoon characters, and we can do things for lots of reasons, while also understanding they are wrong and being sorry for the other.

>I’ve also never felt better after being apologized to, and I’ve never had an apology improve my situation or anybody else’s, at any point in my life, ever.

You'd be surprised.

>Anyone have a good pro-apology argument? I can’t think of one.

Well, if one understands that people can do bad things to you or affecting you, but still care for you, an apology can help make it clear that this is the case (that they do care for you, despite what they did).
The core looked like it had some engine fire just before the 2 boosters landed and it wasn’t from the central engine.
It's not using meta refresh. The content is streaming.
Watching that made me realize I now have to re-evaluate many "bad sci-fi scenes" into "pretty accurate predictions of the future"!
... Or lives in a different part of the world than you.
Center core lost, announced on internal feed https://www.youtube.com/watch?v=-B_tWbjFIGI&feature=youtu.be...
This is why I love the live streams hosted by John Innsprucker. He doesn't look like a TV star, he looks like an engineer, a rocket scientist. He looks real.

The other hosts are great, but if you told me they were hired actors or PR people I'd believe it.
Racket has a cross-platform GUI framework that wraps the appropriate native UI elements. https://docs.racket-lang.org/framework/index.html
"For what it's worth, PCs are subject to the exact same slow decline"

Maybe eventually, but not within 5 years. I'm currently typing on a 2011 Dell with an i3 proc and 6GB of RAM, running Ubuntu. I have 19 other tabs open in Chrome. It dual boots Win7.

I can use this 7ish year old PC for social media, email, HD videos and streaming music with few annoyances due to performance, in either OS. Not so with the 5 year iPad he describes. While I can do several of those things at once, it seems he has trouble with even just one.
Same here! ;-)
Tsuru 1.5.0 on the way, with even better kubernetes support!
Rare dinosaur discovery made in Egypt
> this seems likely to be one of the most important launches in modern rocketry history

SpaceX's Falcon project is the first major progress we've made in the field of human spaceflight since the Apollo program.
Here is an example of modern UI build with Qt:

https://www.youtube.com/watch?v=f7en65HkjeQ&t=39
Elon agrees. He’s complained publicly about this law.
The Surprising Relationship Between Retail Tax and Property Tax
Yeah, it must be really hard on you that world changing, incredible technologies have unknowns and sometimes take longer than expected to deliver. You should let us all know how to do it right.
I don't know if this is a recent phenomenon or if I just haven't known where to look before, but after the stock fall I'm seeing links to remarkably unsophisticated "investors communities" of a kind I'd only seen for cryptocurrencies before.

The description of these XIV derivatives just screams "run" to me, they're pretty much guaranteed to eventually drop to 0 if you hold them long term. Maybe they have some sort of hedging purpose in n-dimensional financial chess, but there's no way they should have been part of someone's personal portfolio. And yet I've heard multiple tales of people trading them, even on margin!

I'm reservedly optimistic about trading platforms like Robinhood, but maybe in the end they'll turn out to be just another way to funnel dumb money into a bubble.
Also, the magnitude of the momentum 4-vector is a Lorentz scalar, meaning it is invariant. Hence the rest mass m = |P| is invariant.