skysight-inc/HackerNews huggingface dataset:
Seems like an interesting model and platform.
I mean, the digital version is really accompanying the student throughout his/her journey. and if the publisher can not only tap into it, but be part of the ritual of studying. the student will then go back to it.
the publisher can easily upsell extra services (correction, tutoring, exam prep, you name it).
It's not rioting.
I've thought about this a decent amount and I just can't agree that unsupervised outdoor wandering is a good thing before maybe middle school. Kids are stupid and even the smart ones get peer pressured into doing stupid things that can injure or kill them. Like when I crushed my wrist riding a bike downhill on a paved road in 2nd or 1st grade. Those kids apparently rode on roads all the time which looking back seems irresponsible as hell.

Unsupervised in a house or on a property in a good area is fine too. I just can't agree with letting small kids wander into cities or roads or forests on their own.

On the other hand I feel like open-ended and/or educational video games like Minecraft fill a similar need for self determination/experimentation/exploration just fine to a degree.
Assuming trump loses, these expiring credits need to be extended or at least eetooled. By the next Congress and administration
I honestly like non-alcoholic beer. I don't drink it very often or buy it for at home, but if I'm at a pub/bar+grill style place it goes well with a sandwich.

However, in my particular case I'm not concerned about calories or triggering addictive cravings, which might be an issue for other people who don't drink.

I've seen claims now and then that nobody really likes the taste of beer, wine, or coffee, that they are just drug delivery vehicles, but I really do. Granted, I'm not sure if it's just pavlovian association from formerly drinking or not.

I'm not aware of nonalcoholic wine that tastes decent being a thing in my locale, but if it was, I would try it.
I am being pedantic, but I hate the word mentee. I am not sure if it was made up, but it sounds like it. The proper word IMHO is protege.
There is no sense into trying to find a rational action/reaction from China. It is one of those states that meet resistance with blood. Always have. Most likely always will.
They play the looooooong game (like Russia and Turkey). It is like a chess game to them. Popularity is just a chess piece and they can win it back in 20 years, with some other Olympic Games or similar. They gain some land forever (Cyprus, HK, you-name-it), while the democracy wolves howl in the dark/background, in vain. And if/when they ever need to win back popularity points they will take a few steps to sneak their way out of this.

Edit: a couple of typos/grammatic errors.
SoftBank plans to lend $20B to its CEO and employees amid volatile markets
> Giving every programmer the ability to create a language of their own does not work out well.

they've already got that ability.

it just results in languages which can't interoperate. and it takes them a lot of effort to get a garbage result.

i suppose that "[it] does not work out well" is a reasonable description of the current situation. maybe you're actually arguing _for_ racket!
having studied and interacted with many of the early APL pioneers, including Ken Iverson, [..] Why does something like J even exist? Do you know? I do.

From reading, because the glyphs were too hard to deal with in a pre-Unicode world. Too hard to type, to display and to print. J was intended to be ASCII based, column-first and play more with natural language grammar features. But I have wondered, was Ken Iverson happy with J? Did he like it? Regret it? Is there any record of anyone asking him or him discussing or writing about this?

Frankly, I have been wishing, for decades now, for someone to stand on the shoulders of APL and develop its successor. A rich SYMBOLIC language capable of allowing rich and effortless expression of ideas at an entirely different level of thought and abstraction than for-loops and indenting lines by four spaces.

What properties might this have?

A brief touch of APL has left me chiding mainstream languages for not having vector/collection oriented transforms, and for not having a core of carefully thought out compose-able symbols for common operations. But it has also shown me a view of people having to work around APL's limitations. The whole environment feels a little like watching Prof Kernighan demonstrating a Unix pipeline to spellcheck a document from a text file of known words in the 1970s, and being impressed that it happened, but comparing it to a probabalistic context-aware spelling and grammar checker today and thinking "you couldn't build that with a shell pipeline" - but with my dim view, I'm not able to see much room for a notation which is significantly better across (m)any domains without just being "build your own DSL". Even APL implementations don't agree on the exact behaviour of the core APL functions. I believe NARS2000 and Dyalog handle ⊆, ⊃, ↓, ↑ differently. How much room is there for a notation to be bigger and more capable but still agreeable to enough people?

What does "effortless expression of ideas at an entirely different level of thought" mean in concrete terms? What level? What ideas? I'm enticed, but unseeing.

Compilation and distribution through executable files

Dyalog APL can make executable files. The main catch is that you need a license to run them, as well as a license to develop them. There seems to be no way to buy a Dyalog APL license then distribute free (unpriced) executables. They have an object system, and .Net integration, and have been filling in some of the symbol combinations over the years - as a beginner I can't really comment on that except iota underbar is now a builtin function.
Well, everybody defines it differently, that's kinda the crux when the term "Western world" does not have a strict international definition. Let alone the historical definitions. So hardly any majority definition, which is why governments across the globe, don't use it. Hence I wasn't being pedant about a definition of it, sorry for that confusion. Merely stating that its use is just a historical hangover that in many area's, people have moved on and those that have not, have disparity in how it is defined.

Heck - look at the Wiki entry for some insight into how diverse in definition it is, let alone the historical aspects. https://en.wikipedia.org/wiki/Western_world
> I never had any difficulty walking downtown after dark.

You weren't a teen in [0] 1978 NYC... specifically the south Bronx. I was (though not from there although I lived just a short drive away) and street raced a bit in that area (you were Not ever going to get pulled over for speeding).. dude that was a fkin dangerous place back then; literally-- packs of wild dogs roamed the streets, and people who wanted to rob you and maybe worse didn't bother to hide. No way in hell you could walk through there and not get messed up, even if you were armed. Seriously.

[0] https://www.villagevoice.com/2014/08/07/the-rise-and-fall-of...
No. Please. Don't.
I'll always remember back when the rumors about the upcoming new Nintendo console (later known as Wii U) were circulating. A Best Buy employee saw me browsing the games and started talking about how the new Nintendo system would be twice as powerful as the Xbox 360 and PS3 combined.

Also yeah, Chromebooks are cheap and limited. That's why they're good for kids and old people.
You're absolutely right, unfortunately here in the Bay area it's those kids winging it and getting in.
Beest Gaming Phones of 2019
Fair enough, what should I be calling it? Genuine question, not sure.
Guidebook app is down: https://play.google.com/store/apps/details?id=com.guidebook....

Tweet from Guidebook (they removed the official statement): https://twitter.com/guidebook/status/1162764546487939072

Tweet from co-founder: https://twitter.com/pklada/status/1162815530874445824
How is this whole thread turning into Reddit.
Use the liquid nitrogen to cool a coil of copper tubing through which oxygen is flowing, to make liquid oxygen?
I absolutely agree, as an interviewee that's what I focus on, and you're right you can catch it if someone is bullshitting.
It’s also a lot less obvious. What’s so difficult about wrapping a string in double quotes?
Show HN: Signata – A Personal Cryptocurrency Vault Service That Uses Yubikeys
Hi HN, co-founder of Signata here.

We're running in a closed Beta at the moment until we iron out any major bugs remaining, but you can fill out a form to request access if you're interested: https://forms.gle/iqP2Bh7ABGuzRaPf8

We've also only published the Windows desktop app at the moment - we have the Mac app built and tested but we're just dealing with the Apple notarization process first before we can release that :)

You can read more about the launch here too: https://medium.com/@congruent_tim/announcing-signata-cd86001...
Ask HN: How Does Instant Bank Verification (IBV) Work?
For example, on Venmo, you can link your bank account through IBV by selecting your institution and logging in. Once you do that, Venmo can pull money and put money back in there. But how does that actually work under the hood?
The quantum revolution is coming, and Chinese scientists are at the forefront
A lot more 6502 code was self modifying than necessary - I know a lot of people (myself included) did not pick up zero-page indexed indirect/indirect indexed address modes and instead kept using absolute x/y indexed and modified the absolute part for larger loops. A large part of the reason why I didn't learn about it until fairly late was that I mostly saw absolute x/y indexing in the code I looked at to learn. It's interesting how many bad habits you'd see in code like that, given e.g. the C64 ROMs were extensively dissected and documented and published, and they used zero page all over the place.
How many more decades are we going to have to spend learning this lesson before we learn it?
network operators already use a sort of var strategy — Where there’s actual value at risk, the value customers pre-empt general bandwidth in the case of an outage. That’s kind of the TE principle the authors were claiming to improve.
That's not correct. These are class D amps. No load = no current flowing.

Too much load (low ohmage speakers - things that dip below 1.5ohms for extended intervals) means too much heat dissipated as switching current in the amplifier IC, which burns out a driver FET or some other part of the silicon die.
Wow. Males are triple the rate of females.
Class action lawsuit
I would replace mentee with telemachus. That’s who mentor taught!
World health officials take a hard line on screen time for kids
Mozilla Firefox Bug Let Third-Parties Access Saved Passwords
It is an understandable policy.

The person being asked has no idea where the asking person is at or even if they should be doing that thing at all.

If there is nothing to show.... you have no clue.
Nigerian Teens Are Making Sci-Fi Shorts with Slick Visual Effects
The point is to have more regular sun exposure, not stay locked up in an office for 6 months, then spend a week on a beach for 4 hours at a time.

To end up looking like that you need to do some serious sunbathing or outdoor work without covering yourself. You aren't going to end up looking like that just from walking outside for 30 mins a day, especially not at latitudes further from the equator.
Nice article. Well written!
I'm guessing they drive themselves at something below walking pace, and if they're interfered with in any way they stop.
In Canada, I never bag my fruits and vegetables. They all just get tossed in the basket and come home in a reusable grocery tote. They get weighed at the till.
Google seems to have missed the fact that they, unlike Apple, are not a monopoly. All it will take is for a few major players to start doing APK downloads OR someone to start an alternative, developer-friendly store with lower IAP margins, and they will quickly lose business.
It's gatekeeping, isn't it (in a good way)? Demonstrating you give a shit (rather than saying it) goes a long way.

I went to a meetup around where I live that was meant for developers on my area. What ended up happening was half the group were practicing developers who wanted to socialize a bit more, and the other half were people who were "super passionate" about programming and wanted to talk nonstop about their ideas. Unfortunately I got stuck with the latter half, due to seating, so I had to field all kinds of "Do you think this is a good idea?" questions the whole time. It sucked.
I often hear the “comments aren’t supported” argument against JSON, but as a daily consumer, creator, and maintainer of JSON, I honestly can’t recall ever _really_ needing comments in JSON. It tends to be somewhat self documenting in my experience.
Earlier this week I saw an ad for a very, very small power supply rated at 45W [0] and I thought it was a scam, but upon research it turns out there is a major paradigm shift delivered via chemistry in both passive and active electrical components developing.

This is not a promotion for the device, mind you. Just that we're abut to see a ton of demonstrably better electronics enter the market.

This has major implications for a lot of things, including much more efficient data center design and much more compact SBCs and phones.

[0]: https://www.ravpower.com/p/ravpower-45w-type-c-pd-wall-charg...
I couldn't find this offering on Tesla's website.
As many as they need to start teaching it in business schools?
What about offline tracking? I went to a big box store today, and after I got home, I got an email asking me to review my visit. Now, I'm sure that somewhere I ostensibly consented to any and every form of tracking, but it was startling to have my nose rubbed in the fact that every time I use my credit card and everywhere I carry my phone it is being tracked and linked to every available piece of information about me, which I'm sure is far more than I would like to be public.

I don't fill out surveys anyway, but I was feeling particularly pissed, just because it should be socially unacceptable to behave like this, just because you think you can legally do it and nobody can stop you. So I flagged it as spam.

Oh, and the chain store that did this has been in the news for data breaches, not long ago at all.
Basics of Mechanical Computers
The Zork series (particular Zork 1) are very fond childhood memories for me. I still pull it out every year or two, and try to "speedrun" it, by completing it in the least possible moves. There are some great methods for pulling this off, but you are sometimes at the mercy of the RNG with respect to the roaming thief and the troll fight. Save scumming doesn't seem to work in most versions I've tried since the RNG state appears to be stored in the save game file.

When I started messing with UE4 about 4 years ago, the very first project I wanted to try was recreating Zork I, as I pictured it in my mind.

I was still learning the ropes in terms of creating good assets for UE4 (and still am to a lesser degree), and formulating my own art style, but there are some examples (Living Room and Entrance to Hades) as well as a sample treasure (Platinum Bar) here:

https://imgur.com/a/7XnzvY0

Other than that, I had a large part of the overground/underground map done in greybox form, and were starting to add interactive components like the rug, trapdoor, and lamp.

From time to time, I feel like going back and starting over, it's still something I would like to do one day. The conceptual problems I faced were:

1) whether to limit the game to "on rails" style game play when moving between locations, or to allow the player to freely roam in normal first-person fashion; and

2) the original game relies so heavily on the players imagination to flesh out the environment on their mind. If you take that away from them by providing a visual interpretation, would the game be as fun or interesting?

I never answered those questions, so I gave up on it and moved onto another equally as ridiculous concept (and then another, and another...)
We have not yet delegated that task to machines.

(You've asked an extraordinarily odd question. There's a context in which such a question might imply that the OP should look to God and religious texts for guidance rather than rely on their own reason, but I'm going to go out on a limb and guess that you're not suggesting that the bible/Koran/Baghavad Gita/whatever offers words on the matter of Google employees and their relationship with their employer that supersede human judgement.)
This is nice but I like this advice much better:

Ira Glass quote:
> Nobody tells this to people who are beginners, I wish someone told me. All of us who do creative work, we get into it because we have good taste. But there is this gap. For the first couple years you make stuff, it’s just not that good. It’s trying to be good, it has potential, but it’s not. But your taste, the thing that got you into the game, is still killer. And your taste is why your work disappoints you. A lot of people never get past this phase, they quit. Most people I know who do interesting, creative work went through years of this. We know our work doesn’t have this special thing that we want it to have. We all go through this. And if you are just starting out or you are still in this phase, you gotta know its normal and the most important thing you can do is do a lot of work. Put yourself on a deadline so that every week you will finish one story. It is only by going through a volume of work that you will close that gap, and your work will be as good as your ambitions. And I took longer to figure out how to do this than anyone I’ve ever met. It’s gonna take awhile. It’s normal to take awhile. You’ve just gotta fight your way through.
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OK. Actually the reason I felt it was unlikely to be correct was that I have lived in both river deltas (a year each in Shanghai, Shenzhen, Zhuhai) as well as travelled extensively (Suzhou, Yangzhou, upper Yangtse, Jiangmen, etc.) and suspect given the manufacturing and residential density and geographic expanse of the lower PRD, it should have significant garbage versus Yangtse. How was the data gathered? Satellite? When was it gathered? The 2017 paper probably uses 2015 or earlier data, there have been substantial improvements on environmental issues in the PRD region (really China-wide) of late, but I'd still be surprised if it's substantially cleaner in plastic refuse terms than the Yangtse.
unless your goal is just to see if you can produce LN2:

> In most US cities, you can get LN2 for between $0.30 and $1 /liter. Just go to an Airgas or whatever with a dewar and they will fill it right up for you.
My brother and I built a go-kart out of scrap angle iron and an old lawnmower engine. We had an unbelievable amount of fun with it.
Good on you. Technology has a time and place, but it should never replace human interaction.

On the topic of iPads, I went to a combined middle/high school, and one year, they moved to require the whole middle school to have an ipad, making the argument that they were being 'technologically advanced' and adapting to the 21st century 'digital society'. It had exactly the effect you might think. You cant type on ipads, so the school still needed to have laptops for kids to use. And at lunch or after school, all you would see is kids playing games or watching youtube on their devices. The school administrators knew what was happening, but didnt want to do anything and admit they were wrong. iPads are a truly net negative for young kids, and I hope that more people will realize this.
He's 26 years old but still sees a pediatrician: Why some adults don't move on
This is a claim you see in ads that are obviously some of the most bottom-feeder clickbait types - just from that you could guess it's not true.
Privacy researchers devise noise-exploitation attack on dynamic anonymity
I think it's because it was my first. And it is simple. Yes there are many addressing modes (like zero-page, and "absolute indirect", and "indexed indirect") but there's only 56 instructions and you can learn it in one afternoon.

And doing something useful with 56 instructions, 8-bits at a time, is like solving a puzzle.
>”YAML is easier to read and write.”

You may be surprised to find that there’s significant disagreement on that point.
Technically it is, isn’t it? I think Ninebot bought them. But you could say that makes the original Segway dead then.
$37k/year is over 60% of gross median household income in the US. It is absolutely insane to be spending that fraction of income if you're including only disposable income, food, and gas in that amount.
I thought domains are locked for 90 days?
The DOT doesn't show that to be the case.

https://cdn3.vox-cdn.com/assets/4315981/DeathsOverTime.png

Remember, the correct way to look at this data is per person. The US has 30% more people now than it did in 1990. So, even though there were similar number of deaths, you're children are still safer than you were in 1990.

A not-so-fun fact most people don't know:

> One in every three of fatal pedestrian crashes involved a pedestrian with a blood alcohol concentration (BAC) of at least 0.08 grams per deciliter (g/dL)

https://www.cdc.gov/motorvehiclesafety/pedestrian_safety/ind...
Will take you less than 30 mins to make saag paneer in an instant pot.
This is what is called a "positional arms race". A comparable situation can be seen in football players and steroids. One does it, so all feel they must do it or be "left behind". For all this struggle, no one is better and most are where they started. Now they must also deal with the huge medical issues that steroids can cause. If every one stopped, all would be better. However, no one wants to be the "sucker" who stops: the first to do so actually will lose.

It's the same issue here: interesting opportunities have a limited number of slots. My benchmark for getting in is not an "A" or a "B+", it's whatever my classmates have and then some. We all study more, but are not any better for it.

There doesn't seem to be a solution that has been devised for this sort of issue in this sort of a case, as it's tremendously difficult to find any viable means of regulating how much free time a child receives (leaving aside the ethical/moral questions about such a practice).

It's not just childhood, though. Higher education [0] has experienced it. Indeed, any "positional good" which has a limited number which go to the "best" is likely already experiencing this or will soon.

Again, no one has yet found a perfect solution for such an application as this. We've tinkered with the positioning in certain cases (e.g. higher education and affirmative action), but it often doesn't work (in the instance of higher education, while all kids' childhoods may be screwed up, certain groups have theirs screwed up in the "right ways") [1].

I believe another example is the rise among millennials of "experience" vacations. Increased social media usage fuels envy and a perception of being lesser, meaning john doe now feels he needs to take a more exotic vacation and get more pictures with more retouching.

I see no easy solution to this. The normal mitigation is government regulation, but I see no "arms control" type solution for number of math problems done. Ideas, any one?

[0]: https://eric.ed.gov/?id=ED474473

[1]: https://www.theatlantic.com/national/archive/2012/10/the-pai...
It gets annoying when you have to do what seems unnecessary.
What the hell I don't come on HN to cry. WHAT IS THIS?!
Since when is JSON not human readable/maintainable??
I think this is more of an adult's problem. The transition from kids to teens and adults is awkward everywhere, but it's particularly bad in Japan, as they're pretty much coerced and funneled into the workaholic (and misogynistic) society. But when kids are being kids, they're fine.
I bought a great recycled plastic picnic table a year ago. The great thing is that it has a 40 year warranty. The downside is that it cost slightly more than a virgin plastic table, and much more than most people would ever spend on a picnic table.