skysight-inc/HackerNews huggingface dataset:
My only point is that analogies are flawed. The abstraction that they provide hides complexity that at some point will leak out.

>There is an intuitive reason why 1/3 + 1/3 != 2/6.

You and I have different ideas of what 'intuitive' means. It's 'intuitive' once you understand the rules of fractions and what they mean. It's not so easy to derive this rule if you're working in the space of real world things.

And sure, I agree you can ad hoc extend the analogy of tables to bring it in line with the underlying mathematical rules, but then your analogy is no longer as simple as it was. The complexity is leaking out of the abstraction you had it under.

>The important thing here is to help students build the intuition that mathematical notation shouldn't be treated mechanically, you should think about what the notation represents

Sure, using abstractions and analogies is a powerful way of teaching. All I did was point out that analogies have limits and at some point they can become detrimental to understanding the fundamental concepts.

This is a common complaint by Physicists when doing public lectures on Quantum Mechanics and then having people extrapolate from the metaphors to derive incorrect physical rules (e.g. faster-than-light communication from a shallow understanding of quantum entanglement).

>because it deals with an improper translation of the English into mathematical notation.

It isn't just about the improper translation to English. It is also about the improper mapping of fractions to real-world things. 2 girls out of 6 kids in a table maps nicely to the fraction 2/6. But even though 2/6 is equivalent to 80/240, the latter is a little harder to map to a table of 6 kids and 2 girls - don't you think?

>The temptation to say 1/3 + 1/3 = 2/6 only comes when you're blindly applying operators to notation.

I disagree with that in context of learning how fraction operators work. The fourth-grader logically extended the analogy that they were given because conceivably, there could have been an operator defined that matched their intuition, for example, let's call it
'@' and define it (not rigorously) as "a/b @ c/d = (a+c)/(b+d)". This operator, if existed, would work very well for combining tables of boys and girls and getting the fraction of girls to match the fourth grader's intuition. The fourth-grader is learning fractions for the first time, and that operation could have conceivably existed - so the only reason they were wrong is that they haven't been told what the rules of fraction addition are and NOT that they misunderstood the analogy. The problem is that the "+" operator does not work that way because it isn't defined this way as per axioms for fractions.
I think the point GP was trying to make was that robot control model is likely a process control model, which is an area of math that's already well-explored and involves no AI. Single and multi-variable control systems[0] get into some advanced math but are not obviously mappable to machine learning models--they're much more like heavy calculus.

[0] https://www.controleng.com/articles/exploring-the-basic-conc...
As per the required SEC disclaimer, past performance is not indicative of future results. AI is great at spotting patterns that conform to past performance. Not so much when things change.
I mean more the target market of the Prius rather than the underlying technology.
The idea here isn't that you want a work area outside your apartment. The idea is that you'd ideally want an extra room in your apartment to serve as a home office, but you are willing to time-share it with other people to make it cheaper than the cost of an actual additional room for your exclusive use. But you still get to wander over there in your house slippers, just like a dorm kitchen.
Everything seems easy until you actually get your project management organization involved, and your IT staff, your QA, your business analysts, your compliance department, start allocating cost for your staff etc....
> no player likes walls of text

Heh, I'm admittedly in the minority here, but this is part of morrowind's charm to me. No voice acting so they could have huge rich amounts of text. But I was a kid with infinitely more spare time then :-\
Ioannidis is willing to take a temporary hit to his personal reputation by making pointed remarks. The data is slowly erring towards his (low) estimates , but this is going to be a tortuous progress. The bigger issue here is that all this science has been politicized, especially in US & UK where leaders appeared alongside seasoned scientists as if they know their shit - they don't (and have proved it).

Plenty of other countries took a cautious approach, admitting that they are venturing into the unknown, and many of them are now cautiously opening up or planning to open. Uniquely in US and UK people are doubling down on any scientific evidence as if it's political, and this becomes a self-fulfilling prophecy. Now even molecules are partisan. What's more bizarre is that the citizens at large are siding with these "displays of leadership" from either side and often scoring politics points sems to take precedence to science. And then, after displaying such despotic devotion to their politics, they are also accusing asian governments (which have been largely successful) for despoticism. We 're probably witnessing a globalization of values in a disappointing way
> It's not like young men interested in Python have nowhere else to go.

It tells them that inclusivity is against their interests. Boys growing up where they are explicitly barred from opportunities due to their gender are probably not going to be very willing to accommodate women in the future. Also things like this has shown to not move the needle, so all you accomplish is drive the wedge between genders even further down.

> I think how Guido wants to spend his time is up to Guido.

And we are allowed to criticize him for it.
How to Start a Blog If You're Not a Nerd
Novi Michigan now headed further down the search results page
Possible, but I see two big obstacles:
1. Mini-apps are optimized for this one purpose and feels much faster and native, websites won't be able to achieve the same.
2. Some features provided by WeChat is actually important, especially the payment part. Websites won't be able to integrate something like WeChat pay seamlessly as mini-apps do. If it requires users to put in credit card information, it would instantly fail in these countries
You can't stretch definition of AI that wide.

Where's AI in Microsoft Office? Where's AI in spellchecking? Where's AI in route planning? Demand planning, maybe.
React + Firebase (auth and DB) + whatever minimal CSS I run across.

None of my personal projects get used much so none of the costs of Firebase really come into play for me.
Marshall Cavendish Microcomputer Catalogue (1983) [pdf]
As Taleb recently put it, better to over-react and have to ease off than to under-react and have to play catch-up. See New York.
May I humbly recommend just including the git status in your LS command.

alias ls="exa --color auto --all --group-directories-first --long --group --header --modified --sort=name --git --time-style=long-iso --classify"

That should give you a gorgeous directory list.
It's so hard to take a site with serif fonts seriously. It would be worth the 8th css declaration if the author added `font-family: sans-serif;`.
Arm Unveils the Cortex-A78: When Less Is More
Of course, there is no grand plan, and yes, a lot of notation is historical accidents. But my point is that attempting to "fix" it will probably yield a better notation, but not the "perfect" notation.

As an aside, df/dx treated a fraction is used as soon as second or third semester of uni when they learn how to solve differential equations using separation of variables, and physicists/chemists start using total derivatives for thermodynamics. I am not aware of notation different from df/dx where these subjects would be just as clear.
It's also the kind of shit that will def find lots of advocates on HN even if the evidence is spotty at best
I have yet to find a way to pay authors directly. One way I can support the authors is pirating the book, reading it once, deleting it and then purchasing a physical copy and donating it to the library. The end result is the exact same as if I had read the physical copy and donated it: I read the book, I paid for one copy and it doesn't take space which I do not have.
That's a really good idea. You typically only need it on long trips, and then it can also be a normal trailer to load all your gear into. Meanwhile when you get to your trip destination, now you have a generator to run electrical devices without having to worry about running down the car's battery.

And it's normally at home, so if the power goes off for a week you can still run your house and charge your car.
yup, this is not a well done blogging platform.

simple != simplistic. "most minimal" != "minimum".

the 'just read' chrome/edge extension does work, and vastly improves readability of the produced html.
Or better yet, `font-family: sans-serif;`
Arm Announces the Mali-G78: Evolution to 24 Cores
I've always wondered how you can be so sure it's PRC in the age of easily being able to mask your true IP address. Perhaps the identified attacks have been previously linked with the PRC, or another option is that the actors were not as covert as they thought.

Like remember the indictment of 12 russians ( https://www.justice.gov/file/1080281/download )

The FBI linked a pool of bitcoins used to purchase a VPN service and other things to the Russians. Probably best to not use a crypto with a public ledger for criminal activity.
BluRay ripping is possible, too, although not as simple and easy as DVD ripping.
So if you rotate your head 90 degrees the effect falls apart?
That’s not my argument. What I’m saying is that a flywheel is a poor analogy for what is being described.

If you understand what a flywheel is, and I tell you that there is such a thing as a “marketing flywheel”, you’re no closer to understanding what I’m talking about.

A much better physical analogy would be a chain reaction, or something like compounding if you wanted a mathematical one: i.e. anything where the initial investments fuel outsized returns later on.
They do care about the open web, but in their own way. Of course their own profits are most important. Same goes for Google. I still hold the kicking out of flash to Apple's credit. Google followed them on mobile devices and this was the start of the end of flash on the web (the end of the end is soon to come!).

As for the encumbered media formats point, it's been mainly a Mozilla and Google thing, as both distribute their browsers gratis. Apple already pays lots of money for patents on other aspects of their devices, like the wireless connectivity parts. But Apple has been warming up to open formats slowly. They've implemented opus support in Safari (although sadly no ogg/opus). They've joined AOM and maybe one day they'll implement AV1 in Safari as well.

In general, there is a ton of momentum behind H.264 and its successors which is hard to direct towards open alternatives. Outside of browsers, media formats like VP9 are practically dead. Most video cameras use H264 or H265. DVB-S2 uses H264.
Have you read Siddhartha by Herman Hesse? I really recommend that book. Follow that up with ""What the Buddha taught" by Rahula Walpola.
Two interesting examples of viable, accredited, online schools:

Western Governors University: https://www.wgu.edu/ (also mentioned in wikipedia): state aid available from multiple states it seems (per wkp).

BYU Pathway Worldwide and associated programs. It requires a Church affiliation but not necessarily membership (I think). I think there is good personal support, interaction, tuition is much lower, bachelors programs (like IT, business, others) are available, programs excellent, and is also suitable for those who need to first become qualified for entering a university (edit: i.e., learning English which is used in curriculum, and other basic skills), then provides that university. More info is in Wikipedia and I have gathered a bit of info including linking to a news article that explains it well I think, here: http://lukecall.net/e-9223372036854578440.html .
Show HN: Squawk – Push-to-Talk for Teams
> I’ve always been of the impression that the vast majority of people pirating wouldn’t have bought it anyways.

I used to generally believe this as well, but then services like Spotify, Apple Music, Youtube, etc. came along and put an end to the golden age of music piracy. Maybe these people wouldn't have bought the book at a full retail price, but there is very likely a price they would have paid to get the book in a convenient manner. Even the article basically admits as much. The author's complaint isn't the price, it is the convenience.
Economics of Slavery [pdf]
Ever since I first saw one of these I have been wondering if it would be possible to display as-shot light field camera images. If it is, they should seriously think about collaborating with Lytro.
The thing I keep in mind is that state is mutated far more than it is observed. You might handle 1000 or more requests per second and only export the number of requests once per second or less. In light of this ratio it’s important to make the recording path as simple and cheap as possible, and it’s ok if the observing path has to be complicated to compensate.

I usually refuse to use atomic increments for services because it scales very poorly. Even a mutex-protected increment scales much better than atomic increment.
I think that works for ISPs because their service area and customer base are arbitrarily defined and within their control. They don't have to worry as much about a datacenter suddenly opening up in the middle of a neighborhood that throws off the profitability of everyone else.

And they can also impose things like bandwidth caps to curb some less-profitable customers' usage. But cloud providers, by design, are charging "per use" and expected to scale "indefinitely"... at least for expected use cases.
There’s also this element of framing surrounding the word “offensive”. when someone is put on the spot and asked if they find something “offensive”, it’s kind of a socially precarious moment. If they say “yes”, it could lead so challenges and confrontations (“why? Can’t you see that it’s just a word? No one’s getting hurt, it’s just a game”), but if they say “no”, the conversation will probably end, without any uncomfortable follow-ups.
What kinds of rich content? React + TypeScript, or something else? Have you used the Hugo babel plugin?
From the creator elsewhere in the comments:

> You can't self host it, otherwise you'd be better off writing your own basic HTML pages or using a static site generator. You can check out the source code on github though https://github.com/HermanMartinus/bearblog
Someone else was complaining about this library using 50k of extra space for some operations. I wonder what the benchmark would look like if you used that for buffer.
No it's not. With WeChat you can easily get new features by visiting mini-apps. It is actually a distribution channel
You were lucky. Most e-books from Amazon come with DRM and restrictions preventing you from reading them on devices that do not have a kindle app. I once purchased a textbook (that wasn't on libgen) on Amazon and had to use the Kindle app on Windows to read it. It was not readable on Kindle Cloud Reader and Amazon does not have a Kindle app for Linux. I returned the book after using it (only needed it for a week) and got a refund.
>(illegal under the GDPR, should be opt-in instead)

Anonymized telemetry that cannot be correlated to an individual user, and which contains no sensitive information, is perfectly legal under the GDPR.

Mozilla telemetry isn't tracking your movements across the web, it's measuring things like "how many crashes are being experienced per 1000 hours on Nvidia graphics cards" and "what percentage of users have addons installed".
To use your own example, they're designed to handle a certain quantity of 18 wheelers but they're not designed to handle traffic that is entirely composed of 18 wheelers.

Raising the average vehicle weight from 1.5 to 3 tons will definitely have an effect.
Sales of virtual land are going through the (virtual) roof
I’m pretty sure the author isn’t teaching anything but is instead pointing out the unfortunately common pitfalls when having someone new start with the JS ecosystem.
This was, iirc, part of the bargain that Libra struck with regulators.

Turns out that people will get angry if you don't talk to regulators, they will get angry if you talk to regulators...they will get angry.

I think this is a lesson that will hopefully explain why the financial system needs changing (and also why it won't ever happen).
Cognito is an identity service, “incognito” means unknown, “cognito” means known. Polly is a joke about how parrots talk, the service does text-to-speech. Athena is a goddess of wisdom, the service is for querying databases. The name is frequently some sort of silly inside joke. Except Fargate, that name means nothing...
My Dad used to use voice typing on his old Pentium II laptop in the late 90s. It's doable, although a lot less reliable than the ones nowadays.
That's a POSIX rule. Quoting any part of a word affects the entire word and thus preventing expansion. You can also write open''
The problem is that a lot of AI folks bury their heads under the sand in the name of “PAC learning” and claim that you’re unfair in asking for out-of-sample generalization. They are loathe to accept that the popular algorithms are overfitting. I’ve had this debate with numerous NN/RL researchers, and somehow it always comes to this impasse.
Everything you outlined is a use case that is powered by machine learning algorithms. You can discuss all of them without using the phrase "AI." They all likely started with rules engines that solved a real business problem and iterated over time to use more sophisticated back ends.

The thing that I don't appreciate in this field is that companies seem more focused on discussing their "AI" than the actual problems they hope to solve. When I see this, my mind jumps to the assumption that these companies are either: 1) looking for easy valuation multiples. 2) looking for a way to impress VCs/investors. 3) they don't actually understand the problem they are solving. This is admittedly a big stereotype on my part, but this stereotype was built on pattern recognition over time.
These remind me of the holography exhibit at the MIT Museum. If you haven't seen it before, I highly recommend it. For those of us whose main experience with holographic images are the little foil sticker on the backs of credit cards (and, increasingly, whose main experience with the world more than 50 miles from our homes is through a screen), it is mind-blowing. The detail and visceral dimensionality struck me profoundly; they look as if someone has cut out a piece of reality and copied it into another space, frozen in that instant forevermore.

(I recognize the irony of trying to illustrate this with a Youtube video, but nevertheless: https://youtu.be/LkpBYne7SlU?t=54 ; I wish that the one with a man at his desk was viewable.)

This looks to have the same effect, in full color, and animate-able. Light field technology is truly amazing.
We got one of these in the office (much smaller) that we only bring out for conventions. It's a nice conversation piece but serves no practical purpose.
Volvo, Citroen and many others besides extensively adopted the Bosch fuel injection system and those cars performed better and were more fuel efficient than their equivalents without. Quite a few of them still run today, the big difference in price is what held back faster adoption more than anything else.

I've worked on those systems, they were clearly a game changer, incremental improvements got us to where we are today. Almost no single technology hits the ground running, especially not in inherently conservative domains such as automotive. Interesting implementation details made the Citroen one much harder to work on.

Electronics aren't perfect either, they make it a lot harder to keep such older vehicles functioning whereas the purely mechanical ones from an earlier era will quite likely last practically for ever.

Note that Diesel has had mechanical fuel injection for much, much longer and that it wasn't exactly new technology to begin with. It's just that the conditions in a gasoline engine are a bit different which needed a re-thinking of the concept.

The jetronic is now 50 years old:

https://www.bosch.com/stories/50-years-of-bosch-gasoline-inj...

To suggest that fuel injection had to wait until the 80's before it was commercialized is a ridiculous attempt to rewrite history.
Watch Borussia Dortmun VS Bayern München Live 26/5/2020
Thanks for the awesome feedback. Yeah, I've come to realise that I'm the only person partial to Garamond ;)

I've turned off the email obfuscator (courtesy of cloudflare), and will be doing a bunch of styling improvements over the next week.
Unreal Engine: VR medical simulation trains surgeons five times faster
Business fundamentals are concerned with cash flow and the balance sheet. It's irrelevant to have positive cash flow if it can't service your debts (see, e.g., almost every company destroyed by a private equity firm, for example, Toys R Us).

In other words, yes they have more money, but no, it does not make them more profitable.

They're not profitable in either Scenario because they don't have any income in either. But in one scenario, they have $100k spendable cash, and in the other all they have is sweat equity that they claim is worth $200k compensation. With spendable cash, you have runway and the opportunity to acquire external products or services that they need for the business. With sweat equity, you have sweat and dreams of success.
Zoom servers queried even after iOS app uninstall
His Secret Obsession book review
Back in the early 90s, my grad AI class referred to AI as the "incredible shrinking field". The class kicked off with a black-and-white newsreel style interview from the 1950's with an MIT professor[1] who says, to eternal breathless infamy, something along the lines of "we'll have machines that can think within five years!"

Part of the challenge is/was the line of thinking "surely if we can solve Hard Problem X, we'll have intelligence!" This turned out to be entirely wrongheaded, since a vast litany of Hard Problems X turned out to have plain old algorithmic solutions.

[1] I keep hoping this shows up online somewhere. It was shot using a machine room as the set, where mid-century modern furniture had been brought in for guest and host!
Or you might realize that you have no influence or value - like me.
>unless you're familiar with Linux, you might not even realize what program/text editor you're actually in

Exactly. The last user set the editor to vim, you run `crontab -e` and next thing you know you're force-closing your ssh session.
I was thinking that the stock exchange was heading to Frankfurt. Obviously not closing down completely but majorly
Thanks for sharing. Was a pleasure to read, and might inspire me to finally start keeping a journal.

The title could easily be switched to the original title "Why I keep a journal - by the designer of Prince of Persia".

Thanks for sharing anyway.
Baen Books as well, regardless of where you buy them.

Typically, my process is:

- If the ebook is available DRM-free, buy that (this is easiest for scifi, <3 Tor/Baen)

- Else, if I can find a reasonably-priced physical copy, buy that (especially from an indie bookseller)

- Else, pirate the ebook