skysight-inc/HackerNews huggingface dataset:
That sounds about right. I (vaguely) remember having to do some thermodynamics problems in BTUs and Rankine temperatures without converting to SI, but that was certainly the exception.

Once I got into the engineering curriculum, we were also expected to be able to do simple torque and force problems in pounds (force or mass, depending on context), feet (distance), foot-pounds (energy), and pound-feet (torque). Mostly it was to show that all the concepts work in both systems, I think. In case you found yourself working in an industry that hadn’t switched to metric.
How hard do you think it is to steal a password once you have root?
I really don't see electric planes having a substantially larger market than helicopters.
delta zero one tango
This is a company that pays almost no Federal taxes, whose employees are forced to seek aid from the Federal govt. The least they could do is offer paid sick leave for those affected. Hardcore capitalism is doing as much harm to the US during this crisis as the virus itself.
The question wasn't "Why does CA get this?"

The question was "Why doesn't everyone get this, if CA has it?"
While I agree, it wasn’t just general public opinion. In NYC at least, it was widely stated in the media by government officials and doctors that masks were unnecessary if you’re healthy, and actually could be bad because people were 1) removing surgical/n95 masks from supply, 2) wearing a cloth mask improperly sanitized can make you sick with other things.
I like how Jeremy’s site has directly addressed those original concerns.
2-3x normal pay? I once thought that militaries must be paying fortunes for what those people do...
They need the masks for medical professionals and first responders basically. Surgeon general is thinking about the greater good here.
I think 30 comes from the Synodic month - the time from first crescent to first crescent of the moon, which varies between 29.18 and 29.93 days. There of 12 of these months within a year (and a few days left over).
In my experience I’ve seen even technical users (Who were used to windows) struggle with the idea of dragging an .app from an open disk image to the Applications folder. They would end up running the app from the disk image and then getting confused when it disappears after restart.
* The lock screen pops up, requests a password, and disappears after you enter it, but you find that your password and enter key also made their way into the foreground text field.

I love linux, but it's not wart-free.
> for some reason

They recommend against wearing medical to help cull the shortage, and they recommend against wearing non-medical because they can provide a false sense of security, especially when worn incorrectly. Both very good reasons, IMO.

I just assume that anyone wearing a mask is doing so because they're infected, as per the recommendations, and I'm giving them a wide berth.
Damn! That's what I get for posting while tired.
>Please don't post shallow dismissals, especially of other people's work.

Nothing's been dismissed. The post is about a throw away program in a nascent React-on-JVM environment. People want to know why it uses so much memory. It's Clojure. Clojure is a memory hog. Case clojed.

Please don't be disheartened. It's a nice show and tell and resulting discussion.
> it's just a vision, something to strive for.

There's no path to that vision in US urban areas.

New airports will not be built near urban centers due to lack of land and NIMBYs. So you have a significant last mile problem.

Everything seems possible when you don't know anything.
Then Zoom should just make them join the meeting via the web browser!

Zoom does this somehow and doesn't make joining from the web frictionless when they pretty much could have.
Psychological safety, I think, comes with not being afraid of unexpected actions or consequences of actions, and from knowing that not everything is on the line all the time, ie it is ok to make mistakes. Safe = not having to fear being fired or worse due to either mistakes or unexpected reactions of bosses and peers.

You can do accountability while having that safety by (kindly) informing people that they will be expected to do a task that they accept/are given, and being clear about other expectations like deadlines, BEFORE they start the task. Give people the informantion needed to predict the result of their actions. And by growing a culture where people know that it is bad not to uphold an agreement (and that may include some kind of “punishment”, which ofc is known to everyone beforehand). It is not bad to do you best to solve a task but make a mistake doing it. That should not have consequences.
More than enough to control window focus on my computer and such. I'd be happy to have a system that responded to a few hundred thoughts: "Left desktop", "Right desktop", "Last focused window", "Lock screen", "What time is it?"
This feels like the typical HN less storage than a Nomad comment. To me this system reads as very important and necessary for the development of AI in general.
It seems to me that a canning pressure cooker would do a faster and better job of sterilizing than an oven. up to 250 + degrees F at twenty pounds pressure. Available at most hardware stores, home depot, fleet farm etc. 22qt size would do a lot of masks
Has there been any work to use a neural network to generate/simulate ECoG signal output from an EEG signal input? (My Google-fu only gives definitions and distinctions for ECoG and EEG). Almost sounds similar in concept to deep learning super sampling (DLSS), i.e., taking a low resolution image/signal (EEG) and using a neural network to generate/simulate a high resolution image/signal (ECoG).
Until the government bans masks in public places in the interest of, you know "public safety" once the covid-19 crisis blows over.

It sucks that we even need to think about wearing masks to escape facial recognition.
You just have two modes, one with e2e enabled and one not. e2e is enabled normally but when LE requests access, the user client receives a message telling it not to use e2e. That may not satisfy you as someone who wants secure encryption (and it probably shouldn't), but it is e2e when it's actually enabled.
Listen to the professionals. Stay Home. And tell your loved ones to stay home too!

If your financial situation allows you to, be generous. Donate to organizations that are supporting the ones who need it the most. Shameless plug :

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Visions of Chaos
Please check it out and let me know of any comments or suggestions. Thanks!
It's the most advanced file system that's supported on all major desktop operating systems (Windows, Mac). Linux is only catching up here. So it's becoming the ideal file system for USB sticks. Even if you just care about Windows and Linux, NTFS is not a safe option to share data. I've had too many issues with the available drivers for Linux.

Even if you are just sharing between Linux computers, ext2 is no good option, because of uid/gid values being inconsistent between computers. ext2 wasn't made with this use case in mind.
Different things. A pre-ferment (poolish, biga) is for developing some of the more complex flavors that a quick / "straight" dough won't give you.

Tangzhong is basically about packing more moisture into a dough while keeping it easy to handle. Higher hydration doughs are very sticky and take some experience to work with, but this will let you get something that is like a 75% hydration, but still handles like a 70% hydration dough. (I just made up these numbers, but you get the point).

For my part, I am fairly experienced with handling up to 80-ish% hydration, so I never bother with tangzhong, since it just adds another thing to do and creates more dishes to wash.
> One engineering challenge is that the brain's chemical environment can cause many plastics to gradually deteriorate. Another challenge to chronic electrode implants is the inflammatory reaction to brain implants. Transmission of chemical messengers via neurons is impeded by a barrier-forming glial scar that occurs within weeks after insertion followed by progressive neurodegeneration, attenuating signal sensitivity. Furthermore, the thin electrodes which Neuralink uses, are more likely to break than thicker electrodes, and currently cannot be removed when broken or when rendered useless after glial scar forming.

Yeah, you're not putting that in my brain.

https://en.wikipedia.org/wiki/Neuralink
I still find it difficult to understand if homemade masks actually reduce, due to all the different messages out there. Even the links provided in the Google Docs (https://docs.google.com/document/d/1HLrm0pqBN_5bdyysOeoOBX4p...) are more focusing on professional masks.

I even heard an "expert" saying on national TV that non-professional masks were worse, because the virus could actually stick to it :S
This is beautiful writing; in fact, I don’t think I’ve ever had an emotional response to a piece of tech(ish) writing. Thanks for posting it.
Fight the Pandemic, Save the Economy: Lessons from the 1918 Flu
Just, please please please make sure they're home-made masks. If you have any professionally-created surgical masks, you should donate them to healthcare workers, who need them much more than you.

I live in Manhattan, and I still see people walking around outside with "real" masks.
> This is a company that pays almost no Federal taxes

Indeed, if you reinvest almost all your profits in the business instead of taking them as earnings you pay very little in taxes. Taxing investment would be a very stupid thing to do since it would discourage what makes society richer in the long run.
They say it creates a false sense of security, which makes people more careless, which spreads more infection.
If they recommended it, people would definitely hoard them. There isn't even a shortage of toilet paper, but people still hoard it.
It's not clear from the context if you mean to say that's simple or hard with that link.

A OTP might be mathematically simple, but logistically it's very hard - you have to safely distribute the key and that key must be at least as long as the message you're passing.
> The Intercept didn't care about Zoom a few months ago and wouldn't have without Corona.

The 2019 Zoom vulnerability[1] was a much bigger deal and did get picked up by the media. Zoom already had a terrible reputation before COVID-19.

[1] https://news.ycombinator.com/item?id=20387298
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Yes and at this pace it may take thousands (or at least hundreds) of years to patch up our A.I. to general A.I.
Why stop here? Let's give everyone free food and housing too. They're even more important. Call it "social fair use."

Remember: authors have to eat and sleep too. If they don't make money from their work, they'll do something else.
Wanted to point out that parent is referring to people who are somewhat in occupation where "coding" is a requirement and probably all those people he is referring to had training or extensive training in that.

I do not think parent poster is referring to junior developers or just people on the streets.

Even though they work as developers and have experience they still don't get it. Just like people who mechanically read symbols and put it into words but don't get the meaning behind paragraphs or whole stories.
The company doesn't have to keep the keys for everyone. They can switch you on request from E2E to central encryption for you account only. Without an opensource client and the possibility to verify the used keys, you wouldn't know that happened. And realistically, even with those options, almost nobody verifies the changed fingerprint.
> similar to the idea that "most people simply cannot read".

I think you're probably right, but in a strictly semantic way: I think it's feasible that nearly everybody (excluding, say, the severely mentally handicapped) could learn to program to a reasonable level of proficiency, with enough effort. However, most people won't, so it ends up being the same as if most people can't.
See that the link is advocating for people to use homemade masks. They won't take way masks from health professionals. The base of the argument is that self-made masks are also useful and can help contain the virus.
There seems to be evidence that masks can make your exposure worse by trapping some amount of air containing the virus under the mask, making you more exposed. If you are sick they can protect others around you, but if you are healthy, less so. In that context the flip of public opinion makes some sense: as we go from assuming most people are healthy to assuming most people are sick, masks for everyone in public can help.

Also, don’t forget that in medical facilities N95 masks are fitted specifically to individuals. You can’t just throw one on and be protected. Most people won’t go through the trouble of doing that properly. At that point it’s like putting your shirt over your nose: looks like you are protected but there are giant gaps that let in air.
Kind of surprising then that not a single major 3D, music, office, or photography production software is opting to use web technologies for the GUI on the desktop.
Per Chris Martenson[1], three reasons for every person to wear a mask:

- Stops infected people [including asymptomatic] from expelling infectious particles.

- Helps remind you not to touch your face [and precludes direct touch to mouth and nose--where mucus membranes are vulnerable].

- Much better chance of a low inoculum [a smaller initial viral load results in less severe symptoms].

[1] https://youtu.be/i6Gy9nPAQE0?t=1988
So I think I inferred that PC was referring to wearing a mask to prevent getting infected, which may have not been the case, but in a way needs to have clarification. 100% mask usage would be great, then the particles never get into the air from the infected. I think it's important to not let people think that wearing a simple cloth mask will prevent you from being infected.
They could have made it just a zip containing an app bundle instead of this mess, but of course they didn't.
Become an iOS Developer in 2020: The Ultimate Guide
They can probably leave their home country and go to some country like Russia or China (or they could probably do the reverse and come to the US if their creditors are in China) and take their crypto with them. Even in the absolute worst case, some countries won't extradite to others.

Even the UK willingly accepts money from rich Russians. A lot of properties in London were bought with dirty Russian money; Russia can't get it back.
Good point. Also, from the site:

> "Note: Please do not buy surgical or N95 masks because we need to keep those available for the doctors, nurses and first responders so they can stay healthy and care for the ill."
Similar with namecheap. https://www.theverge.com/2020/3/25/21194417/namecheap-corona...

14,000 domains with corona in the name were registed in the January and Feburary https://news.ycombinator.com/item?id=22562029
So sad, still getting this wrong after so many years.

I was part of a startup Sococo some 8 years ago. We had end-to-end encryption right out of the box. Plus video, document sharing, chat. All encrypted, end to end with rotating keys. Up to 100 people in a meeting, sharing and chatting indiscriminately.

Its gone now, and the new folks are starting way down the feature ladder from where we were. It's disappointing. Now its 'good' if you can get 6 in a conference.

I hear Zoom can support large meetings. So they may be doing something right.
I'm a college professor, and I'll share my perspective.

For one, Zoom did just work. (At least as a participant, rather than an organizer.) I tried it out, and it immediately worked. It did what all of us were expecting, with no fuss.

I also tried MS Teams. It seems designed with a different philosophy: that you use the software to do many different things, and you want them all integrated. (For example, it posted my meetings automatically to my Outlook calendar. I had never used this calendar before, and was only dimly aware that it existed.)

Moreover, it seems that the expected setup is a bunch of people, all at the same workplace, who communicate with each other consistently. My needs are different, with wildly disparate use cases: a departmental meeting; classes to teach; an online conference (https://www.daniellitt.com/agonize/); an online social gathering. Many of the people with whom I communicate don't work for the same employer. And I don't want to configure all of these "teams" in advance.

That said, I tried to get MS Teams up and running, to teach my class. This involved multiple emails back and forth to our tech support (it seems that I can't set up a "team" myself; I have to ask IT to do it for me). It didn't have its own whiteboard functionality so I had to download and run some separate software.

And, then, in the end... it didn't work. I was trying to teach a class, but my students couldn't see what I was doing. I had no idea why.
If you're not running the SSR server in production, then wouldn't that just be a static website and not SSR at all?
Whataboutism does not strengthen your own position.

Cryptocurrencies still suck as currencies and they are always just one regulatory action away from becoming practically useless for non-criminals.
Ventilator design open source with dimensions for mass production
> I have made the observation that again those _most people_ don't care much reading (good) code from other people

Yes. Lack of reading is observable even inside code bases themselves.

Some contributors are more prone than others to not read the codebase they're working on and break patterns, use different file naming and folder structures, disregard currently existing code and re-implementing things from scratch, use a completely different code style, use tabs instead of spaces.

I don't think it's fair to assume that those people are doing this out of malice, or even to push their own style, because as soon as you mention that to them, they admit they were just not paying attention.
NASA did abandon aviation for space, shelving the X-plane program for about 2 decades, which was a huge loss.

It's great they're back, and have been doing fantastic work in fundamental research that private companies don't get around to: hypersonic vehicles, small-airplane electronics, now electric.
Show HN: Research project “Working in times of crisis”
I just ordered a couple washable ones from Etsy.

The video convinced me I shouldn't keep waiting for them to be back in stock at the store.
Is there any real evidence that masks provide any value for healthy people (excluding health care workers)? All I've seen are anecdotes from internet armchair experts.
Because Orange Man Bad, clearly. /s
Sure but that’s kind of like saying Wells Fargo has competitive interest rates. The advertised product isn’t the problem. It’s everything they make you take along with it.
from the first kernel merge (link found in wikipedia)

https://marc.info/?l=git&m=111377572329534

I don't know about 'git branch', but it looks like 'git merge' wasn't a thing

edit: from searching a bit, it appears that it had branches on June of the launch year, dunno if it had those on release.
I'd probably have each client encode one high quality stream that's targeted to be accessible to 90+% of clients, and a very low quality stream that's 5% of the bitrate of the high quality one. Low encoding complexity and adds a negligible amount to your upload bandwidth requirements. (Obviously if a client can't meet the upload quota for the highest quality, you max out at whatever they can do.)
The current corona crisis fundamentally affects the working life of many workers.

Our research group at the University of Duisburg-Essen, Germany has therfor started a research project that intends to investigate the working conditions and psychological well-being of workers during this situation of crisis.

Since I always lurkingly enjoyed the exchange on HN about WFH and similar, I want to invite you to comment, share your ideas - and hopefully participate in our research.
Git: Learning the Need-to-Know Code Control Concepts
> I once thought that militaries must be paying fortunes for what those people do...

The vast majority of people in modern militaries will never see combat. They are all somewhere relatively safe and merely supporting that small minority of troops who will see combat. Consequently, it is no surprise that pay is fairly low.

But in the private security world – people guarding Western and Chinese interests in unstable developing countries – those people are likely to get involved in some shooting, and so their salaries and benefits for loved ones are very high.
Simpler still: they have a style and don't have the ability to change it on a dime. So they continue as they're accustomed to.
Propeller-driven aircraft perform best at subsonic speeds (slower than the speed of sound). This is because the blade tips of the propellers approach the speed of sound at faster speeds, and this greatly increases the drag on the propeller blades, among other things. This is why after World War 2 propeller-driven fighter craft fell out of use, since they could not get much faster without major issues.

Modern passenger jets operate in the transonic range (0.7 to 0.8 times the speed of sound). This range is a bit too fast for propellers and pretty much requires jet engines or something similar. Using props for passenger planes would reduce their speed as experienced by passengers today. I believe this is what the author is referring to.
Okay, great. Let's wrap some permissions around it to make this a legit process?
If the issue was that simple ans black&white then bezos would not have his fortune. Amazon has gamed the system.
Im a creature of habit. Civ 5 has been providing me a great deal of fun these past few weeks.
Yes, sadly I think the best GNU/Linux for laptops is Windows 10 with WSL (Windows Subsystem for Linux). By far.
>>> ...and I'm giving them a wide berth.

Another reason to wear a mask.
Seismologist here. The problems you describe sound reminiscent of those in seismic imaging. Ideally you'd bury geophones below the weathered layer (typically 3 m) at the surface, to get ideal coupling. In practice that's not economic at scale, and so you plant them on the surface, and account for the non-linear wave transmission through the weathered layer by clever math and by collecting more samples.

There's been a forty-year evolution in these techniques. The cheap, noisy technique might prevail if scientists keep refining the craft by tiny improvements.