skysight-inc/HackerNews huggingface dataset:
German/Canadian here. Was born and raised in Germany to a Canadian parent. Have lived and worked in Cologne, Berlin, Mountain View, San Francisco and now Toronto.

Some random thoughts and musings that might not matter to you:

- All in all, having made the switch from a rather high paying (by German standards) job for a DAX30 company to a Silicon Valley-based US employer in Canada, my gross pay decreased but my take home increased due to significantly lower taxes in Canada. After all taxes and deductions my take home pay in Germany was about 51% of gross, in Canada it is about 67%. On the bottom line I come out about equal due to significantly higher cost of living in Canada, especially Toronto.
My groceries spend is factor 2.5, my rent spend is factor 4.5, internet at home is factor 2, cell phone is factor 3 compared to Germany.
Pretty much everything but clothes is much more expensive in Canada.

- Also the availability of things through online shops or stores is very different. In Germany we have Services such as Geizhals.de which allows you to compare prices on very specific items across hundreds of online stores. Amazon is usually not the cheapest or best option.
In Canada, Amazon is usually the only option. Or ordering from the US and paying duties and fees. This is especially true if you into crafty or electrical engineering things (parts and materials).

- As a visible minority Berlin is going to be fine (if not great!). Other parts of Germany might be less pleasant. I believe physically you'd be safer in Berlin that you'd be in Toronto due to overall significantly lower gun violence.

- Depending on how the US administration goes the TN visa might not be a long term option. It certainly isn't, even today, if you plan to stay in the US long term.

- Banking in the US and Canada are horrible when compared to the EU. Also: The German credit score system is basically the inverse of the US/Canadian system. Nothing on your file == good.

- I personally like winters. Toronto gets lots of snow, Berlin I find to be exceptionally cold and damp during winters but rarely it gets snow. I prefer snow over dampness.

- 24 days of paid leave is the legal minimum for a full time position at 6 days per week, 20 days if you work 5 days a week in Germany. That will vary wildly in the US and Canada.

And many more things I haven't got the time right now to list. But if you're interested I can go on.
The Church of Interruption – My Take
I have used GoodRx when I did not have insurance. I believe that is a very significant part of its business model.

Adding "prescription services" now, essentially GoodRx is becoming a health insurance company that doesn't actually do the insurance part. I mean, it's really offering virtual doctor visits.

So the next step would be "emergency coverage" for an "additional monthly service fee" with an optional "self-pay threshold" for lower monthly fees and higher "emergency assurance".

I think it would be a good thing if they could take it all the way. The thing that is not clear is whether any company could actually make that profitable without excluding people who had certain expensive conditions.
> forced package management

What's forced here? I can use others on ubuntu. I can add alternative repos/PPAs to the default package manager. And what's even the issue? The default package is (as far as I know) entirely open source and/or GNU. "Package management" is not even a concept on windows at all.
It's kind of a weird structure, but I think more like a company than like a nonprofit in the short/medium term. The parent is a nonprofit organization, but it's not the same arrangement as Mozilla Foundation vs. Mozilla Corporation, where all earnings from the subsidiary go to the parent nonprofit. With OpenAI, the parent nonprofit only gets earnings in excess of 100x return. The for-profit company raises investment and returns any earnings to the investors until/unless they hit the 100x return mark. They call this a "capped profit" structure.

When it was founded in 2015, OpenAI was originally a nonprofit, but restructured into this new arrangement earlier this year in order to be able to raise VC money: https://techcrunch.com/2019/03/11/openai-shifts-from-nonprof...
Is there any safe way to test this for a server PSU? As in "unlikely to blow the PSU", potentially requiring slight pre-checking by looking at the circuit?
Totally. 245F is bit brave, unless you are near sea level :D

In my experience, people who ask about dosing tend to want a little more than, "looks right." And the capsules travel well.

Also, nausea sufferers avoid the taste. They often need to.

I got a jar labeled for herbal sleep aid supplements. The finished capsules look pretty much the same. It is perfect. She never gets questioned.

What you said is totally valid though.

Great comments on the 4 to 6 hours.

I do not use it medically, but have made a ton of different preparations for others. Worked through all forms too, oil, tinctures of various kinds, powder...

I found it all interesting and fun. Some of that work is no longer legal, but it was when I did it.

Made a few candies for myself and those vacations out in the woods.

Strange times. We can talk about these things more with fewer worries.
Is there a summarized list somewhere of fundamental airworthiness requirements such as the one you listed?
and welds are very testable via x-ray (perhaps some other techniques), and I believe repairable unless someone really screws up.
I mean, I guess I can clarify that they're safest mass consumer vehicle?

I'll let you read through these links to decide where you stand:

https://www.greencarreports.com/news/1124439_nhtsa-to-tesla-...

https://www.cnn.com/2019/08/07/business/tesla-model-3-safety...

...

It sounds like the regulatory body doesn't like that Tesla is claiming they got a 5.4 rating out of 5, as they say they don't give out higher than a 5 rating - and it sounds like Tesla is using public data points to calculate that 5.4. We'll have to wait to see if this goes to court to see if Tesla's methods for stating their 5.4/5 rating is unreasonable - or if the guidelines perhaps are if they "cap" what rating a vehicle can reach based on comparable data; as Tesla states in one of those articles alone, ~40% of vehicles have a 5-star rating - so they argue it's important to be more specific to allow consumers to better differentiate.
It's 14 CFR 25.173 and 14 CFR 25.175.
Tesla Powerwalls support either AC or DC coupling, depending on system architecture (grid tie, inverter type, etc). It's unlikely homes will be designed for DC powered loads considering the copper costs (versus conversion losses between current types).
How much research is being done on making these tools more user friendly? I spent a little bit of time using Coq about a decade ago, and while I agree that it's very important to make things like that widely used, there was a pretty steep learning curve.
It will reduce the length of the welds (for the hull) quite a bit.

The number of rings is roughly 35 for Starship, with about ten vertical seams each.

For easier thinking, line the vertical seams up and you see that this gives 50m length per vertical seam from bottom to top of Starship. So there are a total of 500m for that.

35 rings with ~28m circumference add up to about 1km of seams between them.

Now if they can use rolls twice as wide and only a single vertical weld each, then that's 500m between the rings and 50m for a single vertical seam. 550m of welds there instead of 1.5m before. This should speed things up quite a lot and reduce the cost of labour.

Raptor production is the real bottleneck, though.
Show HN: Cashflow – Zapier for Financial Services
Hi HN, we're Chris and Pedro from Cashflow (https://trycashflow.com). Cashflow is a single connection point for neobanks, payment services, and digital wallets, making it easy to send money between different platforms.

We started building Cashflow only a few weeks ago as part of the Antler startup generator in Stockholm. We have 10 years of experience building fintech products, but it was the Antler program itself that inspired our project. We saw that people from across the world had no great, effortless way of sending money to each other.

The fintech market in Europe is becoming fragmented. Lots of interesting services are popping up, but if you move countries a lot, you still have to fall back to old methods for money transfers.

To be fair, we are not the first to make cross-border transfers more accessible — PayPal and TransferWise are great examples of progress made in this industry. But what no one has done so far is making cross-border transfers as uncomplicated as domestic transfers.

The products in this space still treat transfers as chores, but our observation is that the way people want to transfer money has changed. It has become a much more playful and frequent activity.

The fragmentation and accessibility are two sides of the same coin, and we aim to solve both. Cashflow connects different fintech services, so you don't have to think about what platform people are using. Similarly, we want people to be able to settle debts on a daily basis, without worrying about fees and slow processing.

Cashflow works by using a combination of current banking infrastructure, the new payment directives (PSD2, etc.), and a handcrafted approach where we hold funds in different places.

Today, we’re taking our first baby steps; applying the age-old wisdom of releasing something small early. We are eager to hear about your experiences in this area, and what unmet needs you may have. Please comment and sign up for the beta at https://trycashflow.com.
That's the best description. "Joe over there? Oh, he's a rocket surgeon." Now I can't help remembering a sketch from Mitchell and Webb.[1]

1: https://m.youtube.com/watch?v=THNPmhBl-8I
https://www.macfound.org/fellows/403/
1950s Science Fiction illustrators are feeling so vindicated right now.
Felt a bit like a typical job interview.
It's a nice front-end wrapper on MJML. It's even using the MJML sample template in this case. I appreciate the front-end work and I bet it would be helpful for some users who aren't great at writing code. I do wish it was a bit more forward in explaining the use of MJML in the project, especially in the About section.
It's the dawn of the true space age.

And though Musk isn't a fan, this could even make solar power satellites economical. The monolithic designs from the 1970s would be absurdly expensive, but modern designs like SPS-Alpha get economies of scale by using lots of small identical parts that self-assemble in orbit. According to the book The Case for Space Solar Power, a 2GW satellite would deliver electricity at 15 cents/kWh at pre-SpaceX launch costs. I plugged BFR's $50/kg into its cost breakdown and got 4 cents/kWh, which is pretty good for zero-carbon baseload. Ground solar is cheaper by itself, but probably not after including storage.

The basic idea is geosynchronous orbit, microwave power transmission with a phased array device that requires a reference signal from the target location, and a wire mesh collector several miles wide. Over 24 hours, a solar panel in geosynch collects 5.4 times as much light as one on Earth. At the time the book was written, the power transmission had been tested over a couple dozen miles, and was 40% efficient.

Longer-term, if we collect fuel from the moon to go from LEO to GEO, we could make it even cheaper.
Say what you want about McDonald's food quality/genericness, but their UX destroys windows in terms of dark patterns.
And those people are going to be much less likely to randomly, unexpectedly walk out in front of traffic where it's not a designated crosswalk. I bet their hearing is refined, heightened, to more easily notice quieter electric vehicles as well.
FH was 5 years+ behind schedule before it was built and launched. Starship already has multiple constructions going on, with multiple prototypes to test and multiple full-size vehicles planned quickly.

In 2011, FH was supposed to have "arrival at launch site" by 2H 2012. It first launched in 2018 (after arriving at launch site in 2018 not 2012). The same level of delay would mean the first Starship does not reach orbit until ~2025. That seems crazy pessimistic and would be a dramatic departure from the otherwise normal delays faced by SpaceX.

I think it's extremely unlikely that Starship would face FH-level delays. That would cancel the Starlink constellation, cede the space-internet game to others, hand the torch to BO or others working on large projects, and absolutely destroy morale at SpaceX.

I just don't see it happening.
Depends where you are in the world.

West Africa has a group of countries that use one kind of insurance (called Carte Brune) and East Africa have a bunch of countries that use one kind (called COMESA)

For central America you buy it for every country that need it (about $15/mo) and South America you can get it for multiple countries, or buy it separate.

Really interesting countries like South Africa the insurance is automatically included in the price of gas.
I don’t see the compensation structure changing in the short term. In any case, I wouldn’t base the decision on a future hypothetical. I would rather earn $X today and invest it over settling for something < $X, independent of whether $X becomes $Y in the future.

I agree with you on factoring cultural integration - obviously as well as what’s the mission of the company, what problem are they solving, is that something that motivates you, etc etc
Former world chess champion Capablanca suggested a 10x8 board with two additional pieces in the 1920s, but there have been many variants proposed earlier and later [0]. Grand Chess [1] is the most known 10x10 variant, also with 2 additional pieces and a different start position, castling not allowed. See wikipedia for links to programs implementing these rules.

[0] https://en.wikipedia.org/wiki/Capablanca_Chess

[1] https://en.wikipedia.org/wiki/Grand_Chess
Mainstream adoption and Agile's second chasm
I once tried Linux on an old G4 MacBook (Power Chip - before the Intel chips).

It was just as slow using Linux as it was using 'Tiger', and also some peripherals weren't supported.

For what it's worth, Linus used to use a MacBook with Linux. But that was several years ago. I don't know what he uses now.
It reminds me of the F-104 Starfighter: https://upload.wikimedia.org/wikipedia/commons/d/de/Lockheed...

Or the F-86 Sabre: https://upload.wikimedia.org/wikipedia/commons/3/39/F86F_Sab...
Please don't spread medical misinformation here and give patients false hope.
A more accurate statement would be that most fund managers care about geopolitics too much, and quants too little.
Nice. RobotWar for a new generation.

[0] https://en.wikipedia.org/wiki/RobotWar
I actually was careful not to say that I believe that is happening, I said that's what "average people" think.

You asked "if China is really going to collapse, what is in it for average people in the US or other countries?", and I hoped that you were genuinely interested in understanding why there are people in the West who dislike the Chinese government. Does my explanation make sense, and convince you that it's not because they want to "prove democracy correct"?

I am also interested in what you believe is and isn't happening in China and why. The organ harvesting reports are extreme and salacious, and I can see believing the Vocational Training Centers are voluntary, but the others seem obvious and undeniable? Is it not well-known in China that the government bans certain books? Or that social media posts can be taken down on the basis of being too critical of the party?

I'm not entirely sure why you bring up shock therapy. It's true that many countries failed to or suffered when they liberalized their society alongside their economies. It's also true that many countries have done it quite successfully.
I think the GP was noting the problem that AI can easily encounter situations beyond what it was designed and simply fail while human intelligence involves a more robust combination of behaviors and thus humans can generalize in a much wider variety of situations.

If the system designer has to know the parameters of the challenge the system is up again, it should be obvious you can always add another parameter that the designer didn't know about and get a situation where the system will fail. This is much more of a problem in "real world situations" which no designer can fully describe.
That’s not correct. Unless there’s been a temporary regression then the warning explicitly happens for the person opening the document (the person you have shared it with)
That really doesn't fit with my experience. Granted, I have a condition known to cause very bad aquagenic wrinkling, so I likely absorb water better through the skin than most people. But I know someone who doesn't have the same condition who was able to mitigate dehydration with soaking in a tub when they were too nauseous to take anything orally.

The OP's wife has a port and is currently getting fluids that way. He's expressed zero interest in that portion of my remark. I don't see much point in arguing this.
Eh, it's just another form of blog at this point. Not the greatest for searching, but a valid medium for expression.
AES implemented on CPUs and AES being safe are two different things.
In case anyone else is curious, but having trouble parsing that, "1≥⍵:⍵" means "return the input ⍵, for ⍵≤1", "⋄" is a statement separator, and "(∇⍵-1)+∇⍵-2" effectively means "otherwise, return fib(⍵-1)+fib(⍵-2)". ("∇⍵-2" means "∇(⍵-2)", because, as mentioned in the video, APL expressions are evaluated right-to-left.)

The {} indicate that this is a function definition: https://www.gnu.org/software/apl/apl.html#Section-3_002e7

My initial take on this, at least, is that it seems pretty reader-hostile. Maybe you get used to it, though.
Keybase iOS Has a Backdoor?
I did not know about these conferences. I googled the first one and found a headline about how tickets sold out in minutes. Is this why? Because everyone attending hopes to get a 6 figures job?
Where do you live, SF/LA? In cities like Chicago it's not quite as easy since we have frigid and icy winters that last 4+ months a year.
Yes. Also it includes topology.
I think it's odd that you describe a failing of 14 CFR 25.173-- the stability airworthiness requirement-- as not being "fundamentally aerodynamically unstable".

The stick force inversions you describe are just a symptom of divergent longitudinal stability. If you are trimmed stick-neutral for climb, deceleration doesn't cause sufficient nose drop, which in turn causes further deceleration and the aircraft does not return to the trim speed.

Both test methods are described in 25.175 and were problematic for the 737 MAX.
Agreed. Our current implementation does not work when there are multiple readers for the same event stream and we need to track per-reader watermarks. We have a very simple model where one reader reads from DB and distributes the work to multiple workers (e.g. network writers) which in turn update the job status.

Multiple writers should work though. StoreJob() should handle that.

I missed the logging to RAM part. Yes, we always wanted to do that but haven't gotten to that yet. Right now, all events are moved through the DB - between gateway and processor and then router. Hence, we poll the table constantly.

Would love if you join our discord channel https://discordapp.com/channels/625629179697692673/625629179.... Slightly easier to have technical discussion there :)
That's clearly what MS are hoping for.
The headline is certainly overblown, but there probably errors out there. The interesting question is where we should be looking for them. All of the major results in an undergraduate or introductory graduate textbook have been studied often and thoroughly enough that we can be reasonably confident there are no errors in their proofs. There are errors in very new or very obscure material, but those tend to get corrected as more people start paying attention to them. It therefore seems like the search should therefore be concentrated in recent results that are becoming more useful but still aren't standard.

On the other hand, we do need to build a standard library of results that can be used to prove those newer results. You can't do much in analysis without basic results on metric spaces, for instance.
120 grand is not the norm for contractors in London.

Glassdoor has London at 52k and Toronto at 44k. Rent in London is almost 50% higher than Toronto and the housing stock in London is awful.

I am talking about full time salaried positions though which rarely break 80k in London (less than what I am currently making in Toronto). My last offer in London was a pathetic 45k.

All figures in GBP.
A lot of what makes it onto the front page of HN are PR and marketing puff pieces. But it’s only considered marketing or PR when disagreed with.
Yep. There's a whole protocol that the nursing staff has to do when they 'access' (aka stick) it. Extra disinfectant, both my wife and the nurse wear a mask, then an adhesive cover applied right after the catheter is put in.

The way it was described is that the port doesn't have an immune system, so infection can camp out there. They said that if she got any kind of bacterial infection anywhere they may need to remove it because the infection can spread there and hang out.

That said, she's super stoked to have it (finally). My wife's arm's look like she's the world's worst junkie. Giant bruises up and down both because she's always been hard to get started with standard IVs and they've wrecked the veins in both arms. :/
You spoke against the hive mind on this forum and are getting downvoted. The agenda some people push on this forum is a bit asinine. Everyone is spying on me and intentionally out to get me. Corporation X, Y, Z are “evil”, etc. I wonder sometimes if this forum is turning into Reddit.
Be a full time stay at home parent. Possibly including being a foster parent.
Here's a Go2 proposal from Rob Pike to change Go's int to an arbitrary-precision BigInt:

https://github.com/golang/go/issues/19623
In addition to HTML, extra care should be taken for plain text rendering as well. Many users disable HTML and images to minimize tracking and malware. I'd definitely prefer a well formated plain text email with the option of viewing in the browser or email client if desired.
Can someone explain Merkle Trees to me in a practical sense?
I've been spending much time in the company of <insert_your_favoured_search_engine> and can only find highly theoretical, often mathematical answers to the question.

The problem I've got is I can't wrap my head around how Merkle Trees work in a practical sense.

The advertised beauty of Merkle Trees is that you can verify the integrity of a branch without the entire tree.

Ok, fine, I get it but how does that work in practice ?

Let's take the well known example of AWS Glacier. I give Amazon a calculated merkle tree root and the BLOB.

So far so good, but what I dont' get is how does that help Amazon verify the integrity of a portion ("branch" in Merkle-speak) of a file ?

I know that the tree root I calculated is the concatenation of various parts ? And given the tree is a concatenation of cryptographic hashes, you can't exactly extract the branches from the root hash ?

Does it work by virtue of brute-force (i.e. when you first send them the file, Amzazon calculates the branches at the point-of-receipt and then stores the hashes of those branches ad-infinitum ?) Or is it more clever than that ?

That's my point. I get the supposed benefits. I understand how you calculate the root. But I just can't fathom how you magically derive the branches from the root without going through the steps of calculating the branches first ?

I hope this is not the wrong place to ask this sort of question !