skysight-inc/HackerNews huggingface dataset:
I didn't know about Gitless. The other interesting thing I see about it is that switching branches also switches out any uncommitted changes. On balance I think I find that less useful.
Countdown Timers: Do They Increase Sales?
There’s such beauty in that level of planning and simplicity.

They would never be able to fit 60 satellites with the typical fairings and launchers and (expensive) mechanisms which are typically used to deploy these things.

But they needed the density. So someone was crazy enough to say, “Well, why can’t we just shove them out the back once we’re up there?”

“Really Tom, just, you know, give ‘em a wee push and let them roll on out?”

“How many more can you fit if we build them to handle some small impacts and self deploy from a single drop point?”

“5 if we have to pick and place them. Maybe 20 if not?”

(While walking out of the room) “Make it 40 and you have a deal.”

“Jesus, why not just ask for 60?”

(Stopping at the door) “You know that will save us 6 launches! 60 then.”
Yup, first answer on Stack Overflow sometimes is the most technically correct, often refined to it's smallest elements, but also not nearly as ready to use as the third or fourth.

The third or fourth cover actual use case like solutions, of course that leaves more room to quibble and vote down, but you learn more from it.

It's the difference between answering a trivia question about a car vs actually fixing a car.
Where does one go to learn how to not cause this one day?
Yeah I jumped ship from TD to Robinhood recently too. Ever since TDs commission free ETFs went to shit.
I'm about 2.8 miles (4.5 km) off the end of the runway, and about 1000 feet (300 m) off the centerline. Arrivals usually have gear down, while departures usually do not.

I saw the An-225 departing. I heard it, felt that the sound wasn't typical, and ran to the window. I spotted the six engines and the distinctive H-tail just in time. That was a jolt. I see that and, well, there can be only one plane. It's that one, unique in the world.

It turns out that my local airport (MLB) sometimes does maintenance for the An-225. I'm not sure why this would be done in the USA at all, but we do have a 10,000-foot runway and huge hangars that I suspect were built for the Convair B-36 Peacemaker. The An-225 has probably been here more times than I know. Maybe I could see it often if there were some way to get notified in advance. Maybe there is even a predictable schedule.
Agree. Also Morse code is one of the modes of communication that a person and a computer can understand.
I might actually upset some folks by saying....who cares, it's just a character?

I've worked with many OS's that didn't even have a directory structure, and those that did were only one level deep. And there wasn't a lot of "slashing" going on....DG RDOS for example. Some other OS's had colons (perhaps VMS - I can't remember now.

We're talking about a time back in the depths of history where OS's had their own specific quirks. To assume that folks bumping into computing way-back-when encountered Unix regularly and "used slashes" is based on a deeply flawed presumption. Back in the early 80's (and into the early 90's) cheap computing was to be had by the use of CP/M and MSDOS, not Unix because it was too bloody expensive for non-academic use. I used to look after a bunch of SCO 86 boxes in my time (pre-Linus), for the customer these licenses were not cheap compared to say MP/M.

My first encounter with Unix and the "forward slash" was in fact in 1986, running on a NCR Tower box (and that's some minor exotica I could go on about...) and to me it was just another thing to remember.

So glorifying Unix over its choice of "/" as a directory separator. Really, who cares?

I enjoy Unix and Linux, but this hagiography over its greatness ("/") seriously makes me wonder about how folks choose an OS these days to get work done.
The Chicago Free Speech and Thought Principles Arrive at Other Universities
https://boingboing.net/2015/06/16/super-mario-maker-design.h...
I see "three left in stock" often on Amazon. I don't know if it is true or false but I've checked back many times days later to find the same number after I bought one.... seemingly perpetually.

A cart timer I would immediately think is disingenuous if it was for a traditional retail good.
No no, I am too. It just makes me think of that gag in Animaniacs.
The Australian invention of the puffer jacket
Judge blocks Trump from building sections of border wall
Please do more shameless promotion, latex is amazing and overleaf makes it very accessible.
Chroma subsampling is a terrible idea for non-photographic images. People are not "terrible" at color perception. I can clearly see its harmful effects to on-screen captures, line art, anime, 2d video games, or even Super Mario 64's hat.

Youtube's chroma subsampling makes colors bleed, Mario's hat turn into chunky red blocks approximately filling Mario's hat, screen captures discolored and grainy around text, and sharp colored anti-aliased lines turn into a discolored mess.

(Mario's hat was pixelated on pannenkoek2012's emulated SM64 videos at native 640x480. Maybe newer video decoders antialias the chroma channel, so Mario's hat is not pixelated but "merely" blurry.)

I upload oscilloscope videos with colored lines on black backgrounds, and stopped using brightly colored lines partly because color was being blurred and discolored by Youtube chroma subsampling.
Seriously this. A Tesla wouldn’t be a Tesla if not for Elon at the helm.

They’re producing nearly 1,000/day at this point. I’d say they’re in for quite a nice Q2.

Once Giga3 turns on (optimistically targeted to be by the end of the year), they’ll be producing at a rate of over half a million cars a year. Hard to believe they’ll have the battery capacity for that (37.5GW)
ProtonMail doesn’t support email export, or at least didn’t a few years ago when I switched to fastmail
I assume they're starting small but want to expand it out to web interfaces, syncing and maybe even a mobile app. Text files + git do have limitations when you're on a phone or other mobile device.
Do you have any cites of any 10 year period when more than 50 percent of managed funds beat their respective indexes?
In Defense of Fahrenheit
Same. Came here looking for a comment that would point this out and I was not disappointed.

Trying to learn something from a bad article is worse than reading no article at all.
Yes, commission has decreased, there has been a fee war going on lately and as a result fees have been going down substantially across the board for the major players. Fidelity doesn't even charge for wire transfers anymore.

https://www.reuters.com/article/us-funds-fidelity-commission...

https://www.cnbc.com/2019/02/12/fidelity-and-schwab-fire-lat...
Theory – Theory
Nothing has an infinite number of nothings in it.

One has zero nothings in it...? It also has an infinite number of somethings in it. And each something has another infinity of divisible somethings within that.

Therefore anything that isn't nothing (in the universe of abstraction which doesn't exist in reality, but whatever) is infinite.

OBVIOUSLY.

NOTE: Hasn't read the article and is mathematically challenged.
Tested on Linux. ftp package is called tnftp. You can substitute curl -4o, wget -4O, fetch -4o or whatever client you prefer for downloading files.
Beyond Maintenance
One thing related: I do find I frequently need to check the date of a answer to find out whether it's out of date. Then, ......, I can't find where the year is. Their date format is so bizarre .......
It totally is, but probably not for people working with as many as 15-20 others who can help out!
Order execution. If you're buying a lot of stock, then small differences in the executed price start swamping the trade fee.
Because it's $10 that I could be using to buy actual stock and not gifting it to some broker for basically doing nothing.
How is their deliverability? They had trouble with that back when I first checked them out.
How do I protect myself in a world where everything about me is leaked?
San Francisco police chief concedes raid on journalist was wrong
One problem with gold recycling is that some simple methods are also phenomenally harmful to both workers and the environment, as they involve dissolving the gold with mercury. From what I've read, some of this stuff gets shipped to countries with relatively weak labor and environmental laws.
This is what Acorns is
You've seen the xkcd chart about automating and the cost/reward for varying numbers of repetitions per day? I think the concept that big businesses are behemoths stems from a fundamental understanding of what each type of business does each day.

As an arbitrary example, I think if we compare the number of employees onboarded vs the number of new applications shipped, small companies/startups and enterprises are polar opposites. My experience with startups is that you end up with a new web service for every 2-4 people (wholly anecdotal) you onboard as developers. For that kind of company, it makes sense to optimize shipping new web services; you do it a lot! For an Enterprise, you might onboard 100 developers just to maintain and develop existing systems. Writing new frameworks to make building apps easier doesn't make much sense; many of your developers are working on an existing system that would be expensive to port to a new framework. Meantime, your HR department is drowning trying to onboard 20 people a week.

Wasting money shipping this listing is fine; they did it once. This was released in 2013, and I wouldn't be terribly surprised to find out this, or some small bastardization of this, is still running as a production page for Prudence. The money they wasted, amortized over 6 years, is nothing compared to what I've seen startups waste in productivity while new hires wait for laptops, credentials, access, someone to explain some legacy crap that everyone had to deal with, etc.
Some OS I used in the 80's used MFD0 and MFD1 for drive assignments. It stood for Main File Directory.

AmigsDOS was an odd bird that used things like df0: (drive, floppy, 0) and dh1: (drive, hard, 1.)
Does that include the dividend yield? (~1.8% iirc)
I'm a little sad that there still doesn't seem to be a "LaTeX for the Web", a document markup system with similar philosophy as LaTeX but for HTML output. LaTeX is basically only suited for static PDF output, which only survives because there don't seem to be tools that do an equally good job generating HTML documents.

There are a lot of special-purpose markup languages, like Markdown and AsciiDoc. They involve toolchains written in other languages to convert them to HTML. If you want to add features, you have to hack the toolchain.

For blog posts and simple websites, that's fine. But sometimes I want to build something nontrivial -- as an academic, the first thing that comes to mind is an academic paper, where I might want to have special markup for theorems, proofs, examples, figures, and tables, and have ways to automatically cross-reference them, generate tables of contents, embed automatically formatted bibliographies, and so on. Or generate figures from code (like TiKZ), or embed data analysis code right in the source and embed the results (via knitr or Sweave).

With pandoc, bookdown, and knitr, you can get pretty close to this. But what made LaTeX so powerful is that it is programmable in LaTeX. It can be extended: you can define new types of environments (example problems! homework exercises! every example shows equivalent source code in three different languages! category diagrams generated automatically! musical notation is typeset!), you can make new commands to automate drudgery (typesetting chemical equations! building complicated equations!), and you can do it all with at least some basic separation between content and presentation style. Converting the larger LaTeX documents I've made to Markdown or Org would be basically impossible without writing a bunch of scripts to extend the Markdown renderer and hack everything together. There's no equivalent of just writing a LaTeX package.

I'm not aware of another document preparation system that comes close to LaTeX. Org mode is probably the closest, since it has tools to embed code blocks in other languages and include their output, but after a week of fighting with conversions between markup languages I can really see the appeal of LaTeX's uniform syntax and built-in programmability.

The other promising option seems to be Pollen[0], a Racket-based programmable system. But it seems more like TeX than LaTeX: it provides the very basic tools to build a programmable document system, but not the higher-level conveniences (like cross-referencing commands and standard sectioning and environment commands) you would need to build yourself. Maybe someday...

[0] https://docs.racket-lang.org/pollen/
There's a company right now running facebook ads for a suspiciously low priced DSLR camera gimbal ($49 for a product that should cost $1200) which nobody is having any success getting FB to take down. It goes to a credit card processing page. I want to know what the end goal is of outright scams like this. Doesn't the payment processing arrangement get yanked pretty quick once the percentage of chargebacks rises above a few percent of the total number of transactions?

https://imgur.com/a/F0Uea8a
How is it different from CV2?
Thank you for your opinion!
If you can use Uranus as a web service (without any operation like install), are you satisfied with it?
Student forced out of PhD program because of his open faith
Load Testing at a Glance
Ask HN: Car got broken into. Need recommendations on security camera
Long story short, my car was parked out front in our driveway directly in front of my house steps away from our front door and sometime in the early afternoon someone broke into our car and stole a bunch of stuff.

I've already filed a police report and did what I needed to do to figure out what was all stolen.

But that's now got me thinking of installing a camera out front so we can track this kind of thing.

Is there a security camera someone has tried and recommend? Are there any that allow me to access the feed remotely or notify if me it sees movement out front.

This was done in broad daylight while we were all home (I just didn't realize it was happening while I was inside the house).

Any thoughts or advice appreciated.

EDIT: This is the second time it's happened in the past couple of years. Last time they shattered our car window (different car). This time I'm not sure how they got in as there was no visible damage to this car.
I read out what you wrote. He genuinely thought it was pretty funny.

The dark humour runs rampant with him/us.
> Yeah I'm getting to the conclusion this is the crux of it. It'd be nice if they at least mentioned this is why?

A lot of people really struggle through these introductory courses. It wouldn't be very kind or helpful to stop and point out that the stuff they're struggling with is the easy stuff.

When undergrads do go a bit further, it tends to be about things like parallel algorithms, sub-linear algorithms, and space-bounded algorithms. Those are plenty interesting and tend to be more useful to know about.
Except that an order of magnitude more gold is mined[0] than used in electronics[1].

[0] https://www.gold.org/about-gold/gold-supply/gold-mining/how-...
[1] https://www.statista.com/statistics/299603/gold-demand-by-se...
I don't think they are a scam. I have used them twice at least in Belgium and Germany when their offer was cheaper than the competition. The worst thing that happened was that the room was sold as tax included, but of course the Brussels room tax had to be paid to the hotel on the spot in addition. While this is fraud in the strict sense, it happens in Brussels all the time on all sites. I have no idea how their business model works and I am not to defend them. But I guess the author was just the victim of a "normal" mess-up with more rooms given to various booking systems in total than available in reality. And of course poor customer service which is standard for most companies doing business on the internet.
The mental seal.
Wow, that's an extremely immoral dark pattern if true.
It does not. Otherwise it would be higher.
Thank you for your opinion!
Um, indeed we can write text on our favorite editor. So I also need to distinguish Uranus from that.

And also I should think about making mobile friendly Uranus.
Retro platforms were current technology. If I'm going to use technology with several orders of magnitude less power, then I'd at least like it to be open, is all I'm saying.
Understanding Fake Agile
New neurons form in the brain into tenth decade of life even with Alzheimer’s
Which makes their name incredibly ironic.
If I'm going to use technology with several orders of magnitude less power, then I'd at least like it to be open, is all I'm saying.
The product's very first example is a real estate property listing. Surely it's obvious how someone pushing properties could benefit from generating such videos.
Oh whoa interesting. Do you mean for market price trades? In what way does the choice of exchange affect the execution price?
It’s all git, so you can totally do all the development in gitlab, and only touch github when you are ready to make a pull request.

You’d have to run half a dozen commands, including adding new remote and running “hub fork”, but it would likely still be faster than sending an email.
> Although there's no way past proprietary chips

Yeah, see, that's a hold up for me. If I'm going to go through the effort of building something completely non-commercially viable than I want it to at least be completely open. And before you say anything, no, I'm not at all interested in making anything commercially viable.
Highest Paid CEO’s of 2018
A Secret Government Warehouse Prepped for Health Catastrophes
Aaaand the beta is closed.

Thanks for the reference. Hopefully this becomes a fully-supported feature in the future.
I worked for <business imaging company X> where every network-connected copier automatically setup its own web server where unauthenticated users could peruse all of the jobs printed recently. Sure, a firewall might prevent public access, but it also wasn't hard to use Google's inurl: function to find the (at the time) 5% or so companies using these things that had public ip's assigned. You could also upload documents like PDFs to be printed out. Many of the high end fax machines had the same "feature". HP printers did something like this too, but that's not where I worked.

EDIT: Oh, and the network controllers that ran them were uniformly updated and managed with fully open "admin" username no-password telnet and ftp services. IoT insecurity began a looooong time before the term IoT even existed.
+1 on easy sign up. Robinhood was the third platform I tried. The first one refused me for being on a work visa. The second had a very complicated process where I would have to send in dead-tree forms. Robinhood was just simple and easy.

Unlike the stereotypical Robinhood user, I buy and hold a 1-fund portfolio, and I think it works pretty well for that.
Ours hid behind a curtain, flopping around like they had Parkinsons, laughing like they were in a soundproof safe room, with their feet sticking out.

You’d think they’d been eating lead paint chips daily.

Not everyone has what it takes to be accepted to and graduate from Hamburger U
Huh, I Googled ETrade fee and saw $7 as of 2018 so didn't think they'd be lower. Cool! Guessing they must've lost a lot of customers to Robinhood...
"The legitimacy of property rights, however, is rarely questioned." To be fair it's questioned a lot.

In Canada, we made a new Constitution in the 1980's and the 'left party' was going to veto it if we included the specific rights to private property. Trudeau caved and so we don't have constitutionally protected rights to private property in the sense we might want. Though I don't think it's pragmatically much different from most nations.
US Strategic Petroleum Reserve
From https://littlemaninmyhead.wordpress.com/2015/11/22/cautionar...

> Do not assume that UUIDs are hard to guess; they should not be used as security capabilities (identifiers whose mere possession grants access), for example.

HN discussion: https://news.ycombinator.com/item?id=10631806
> Defense,

Ethically dubious, and I don't care about making money.

> agriculture,

I don't care about making money and I doubt there are not already much better solutions by people who, for instance, actually know something about agriculture.

> home automation,

Needless overengineering masturbation as far as I'm concerned.

> industrial automation, finance, automotive, oil&gas, space resarch, robotics

See above re: money, and products already made by people who know shit.

Personal computing is what interests me, and most people doing personal projects with this stuff are making overengineered light blinkers or garage door openers or some other nonsense.
Absolutely, I think the author did a magnificent job!.
Reading the article, all the intricacies (P/NP, polynomial/exponential, blind test, graph coloring) are quite clear and easy to comprehend.

Here are some gentle articles on the zero-knowledge in case anyone is curious:

https://blog.cryptographyengineering.com/2014/11/27/zero-kno...

https://blockgeeks.com/guides/what-is-zksnarks/
Ultimately it's essentially an arbitrary choice, but the reasonable set of characters would exclude letters and numbers (too widely used for filenames already), be already available in the character sets of the time, and not too awkward to type nor look at. That means it'll be one of the special and non-paired (like parentheses) characters, and beyond that any single one would do. Beyond that, any one is as good as the others.

We could've just as easily ended up in a world where options are introduced with \ and path separators are commas, or any number of other combinations. It's a little funny to think that the TOPS-10 developers probably spent less than a day in total deciding on the character, far less than the time spent by everyone else since then thinking about why they did it that way.
Was he forced out because of his open faith or because he tried to proselytize?
It's partially the opposite. Some system calls only accept backlash, but user space programs and libraries may abstract this. E.g. LoadLibrary, which is similar to execve/dlopen.
The price of sending mail must go up. It’s insane how much we subsidize junk being mailed around.
It is safe to say that VCs wouldn't be investing huge sums if they didn't see a remote chance of a huge takeoff; they are VCs, not value investors.
For really mind-blowing possibilities, try org-mode[1] under emacs, along with org-babel[2] and LaTeX export.

You can pretty much write and execute your technical paper and your source code simultaneously in arbitrary languages.

I recommend the spacemacs[3] distribution, as the vi interface gets it right.

[1] https://orgmode.org/manual/index.html#Top

[2] https://orgmode.org/manual/Working-with-Source-Code.html#Wor...

[3] http://spacemacs.org/
I worked on this project where we needed to analyze the motion of objects from the camera in real time. We were trying to find an algorithm that was fast enough to run on the hardware, but to no avail.

One day, it dawned on me that since our hardware encodes the video in h264, we should be able to get some of that info from the video itself. So we tried extracting the motion vectors from the video and sure enough, it was good enough for our use and we got it basically for free.
Interesting story, but what are we supposed to "learn" from it? Obviously we won't use this company for bookings, but what's the bigger takeaway?

Partners of kayak may be scammers? That's news to me, so that's useful to know.

American Express had good customer service? The fact that the author had to follow up to get a full refund indicates that it wasn't the most streamlined process ever.

Is there another lesson here?