skysight-inc/HackerNews huggingface dataset:
I seldom play videogames, just too little time to spend that way. However, I am currently playing Ori and the Will of the Wisps. Platformer exploration game where you pick up new skills and progress the story. Previously, the game that I gave time to was Breath of the Wild.
Mask will stop viruses getting through. Definitely adjusting mask is less hazardous than not wearing one and touching your face. Its interesting for me to just now notice how everyone constantly touches thier face all the time in some way or another.

In this attempt by the US government to stop this pandemic I found their suggestion not to wear mask the most disgenuine of all, especially knowing that countries with high mask wear awareness see this virus much more under control. In the same paragraph they already express they really need those masks for themselves so they don’t want you to hoard. Another argument was they only help when you sick. So all medical personel is sick? What a BS! Even more when they know you may be asymptomatic for up to 9 days.

The only thing I can think of equal to this would be if during HIV outbreak they were to tell you not to use condoms at all because study shows they don’t protect exact 100% times, and you can cut your member with your nail while you putting the rubber on, making it more prone to infections than when you’re actually wearing one.

Government really messed up on this one. Once the dust settles it will probably go into history books how our government suggestion not to buy/wear mask caused USA to be #1 in statistics.
>> my understanding is if you deduce something true from an assumption it means nothing.

> Your understanding is not complete.

> If you start from a set of assumptions and perform a series of logical deductions to reach a conclusion, you have proven that given the assumptions are true, the conclusion is true. You have a proof of correctness under the assumptions.

04091948 is completely correct here.

If you assume P and prove Q, then you've proven that P implies Q.

If you assume P and prove True, then you've proven that P implies True. This is the same thing as proving nothing, since everything implies True.
My background is SCM. Still passionate about it although I've shifted tangentially over time. If you just want an overview of the topic, I'd recommend these two books:

https://www.amazon.com/Introduction-Materials-Management-Ste...

https://www.amazon.com/gp/aw/d/1260084841/ref=dp_ob_neva_mob...

If you're highly technical and would like to learn how to abstract and solve some of the hardest problems in supply chain management, I would actually look into the field of Operations Research. It is basically mathematical modeling and optimization of real world operational and logistics problems. It's so mathematically oriented that it typically is in the mathematics or science departments in universities, as opposed to management. But it is very much an applied specialization of math, directly applicable to supply chain management and other business/logistics areas.

Interestingly, the bullwhip effect is extremely similar to another problem that a lot of people here have a casual interest in: the traveling wave phenomenon of traffic. The requisite similarities are the same. In order for the pattern to appear, there have to be independent actors with cascading delays in the aquisition of information about the future, and a mismatch in the ability to stop production (decelerate) and start production (accelerate). The severity of those traveling waves may change with changes in the severity of the required conditions, but as long as those conditions exist, the traveling waves will always occur.

Interesting consequences also apply. It is mathematically provable that autonomously controlled vehicles cannot get rid of traveling traffic waves. There will always be a delay in information about what lies ahead, whether it is via the limitations of line of sight, or the latency of radio-based communication. And production cars will always stop faster than they accelerate, because stopping has a safety necessity that doesn't exist for acceleration.

Autonomous cars may have faster reaction times than humans, but at highway speeds reaction times are typically 20% or less of stopping times. Therefore they can slightly mitigate the problem. However, notice how everybody talks about how autonomous cars can travel closer together. What this effectively means is that cars can travel closer to the extent that their reaction times are better. This improves unperterbed throughput slightly, but it would actually make the shock-induced traveling waves worse. All it takes is for a stray plastic bag to wander into the roadway and a car to think it's a dog and brake for it. The cars closest to it stop extremely fast but then accelerate slower than they decelerated. Cascading information delays ensure that the wave continues to travel and increases in severity until it reaches some location where buffer spaces are large enough to absorb the wave (due to lower traffic density).

The supply chain parallel problem emphasizes the importance of inventory. Running super lean on inventory can mean lower costs and higher throughput, but it exacerbates the bullwhip effect substantially.
That this is a different type of shock than 2008 doesn't change the reality that things only happen if enough people work to make it happen. If you don't think a really bad path is possible where things get worse (just like a good path is possible!) then you're only fooling yourself.
They have California, Florida, and the rest are just regional pamphlets.
It's been years since I have read about darcs. Did they fix that infinite time merge problem at some point?
The name alone will bring out a bunch of flamers, but Stephen Wolfram wrote an enormous tome on cellular automata. I haven't read it all, and an index search shows it has nothing about the universal constructor specifically, but it should be a substantial introduction. It's available free at:

https://www.wolframscience.com/nks/
Elon musk said on stage that they had put it in a monkey and had the monkey move a cursor with it. I’ve been following musk very closely since 2010 and he’s never blatantly lied so I think this will not be the first time. He has made errors about timelines and etc but never, ever blatantly lied about something so concrete. And it’s plausible to boot.
People care.

It's just that things break down in hyperefficient settings (factories, warehouses etc) when unpredictable events hit them. These environments aren't great at adapting quickly to things they haven't faced before.

Before anyone with decision making power or imagination, can be pulled in to deal with some issue, (that no one has training or experience to handle on the front lines), it's already all over social media and the news. That's just how things work currently.

Give it a few days before reacting to whatevers on the net or on the news.
No federal taxes is false. Amazon pays lots of federal taxes. In some years, they’re paid almost no federal income taxes in the US. One specific kind of tax in one jurisdiction. Our system is set up to incentivize companies and innovation with various mechanisms that change how taxable income is recognized. Not only are Amazon’s taxes legal, but also they are desirable for society at large. The alternative is that there wouldn’t be an Amazon or many other companies.
They just make you take the mask off to identify yourself when relevant, I had to do this the other day while identifying myself for an immigration officer.
Hey! Asim here (author). Feel free to ask any questions. Was not expecting this to hit the front page.
Dev productivity is down: How we measure our dev process now that we’re remote
Zoom would "just work" if they didn't force you to install software on your computer in the first place. If google meet can do it, zoom can too.
How about waiting for actual, robust evidence that it actually works? Raoult’s garbage doesn’t count because he’s a malignant egomaniac with a track record of dodgy research, if not outright fraud.

https://forbetterscience.com/2020/03/26/chloroquine-genius-d...

https://sciencebasedmedicine.org/hydroxychloroquine-and-azit...

Trump isn’t shilling HCQ because he thinks it’ll help COVID-19 victims. He’s shilling HCQ because he thinks it’ll help his reelection chances, by distracting from a weak and shambolic Federal response.

It would be nice to think that FDA is approving it because it now has that evidence, but as it doesn’t (because that research hasn’t been published yet) it’s fair to assume it’s due to political pressure coming from above.

It’s bad enough COVID is killing tens of thousands without self-serving hucksters like Didier Raoult and Alex Jones compounding that death toll. Even worse when it’s highly placed political hucksters like a Trump White House abusing safeguard instituions meant to protect citizens (Frances Kelsey, anyone?) for their own personal agenda.
> 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

The WHO and CDC have been pushing that line as well. Studies linked to in the above article suggest that even home made masks provide some protection to healthy individuals. But even if they didn't, getting everyone to wear them would be extremely valuable for stopping the spread coming from people who don't know they have the disease. Also, "Don't come in hear unless you have something covering your face" is an easy rule for establishments to enforce, whereas "If you have Coronavirus you need to cover your face" is impossible to enforce.

Yet I've seen almost no leadership at any level in the U.S. pushing this (and this seems to be true in much of the West). Lockdowns buy us time, and we seem to be wasting that.
Oh I totally agree that we need to make homemade masks.
Based on my experience with Zoom on the one hand and that Google thing on the other, yes, yes it does.
That project looks like a command-line p2p file sharing system. There doesn't appear to be any branching. It also doesn't appear to be a database (like with a schema), but simply raw files being passed around. There's no data types or queries.

I'm not sure why you bring it up now. They don't call it "git for data" anywhere that I see, and it's missing 2 of the 3 core features that I think a "git for data" would need to have.
This binary assertion is fairly broadly given and I think it’s a narrow view that is a subtle form of unintentional disinformation that endangers. Any reduction of viral load on exposure is by nature better. The intensity of initial viral
Old can help determine whether you get covid 19 and how strong it hits. It’s difficult to believe that some worth of cloth covering will have absolutely zero reduction of viral load. No you shouldn’t think it’s a comprehensive protection. But it’s silly to handwave away as useless as many do. Anything that limits spread should be encouraged. People still need to minimize going out, but if they have to, and have nothing else, dismissing all other masks as useless is not helpful.
FDA emergency use auth for the use of hydroxychloroquine against Covid-19
"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"

Where is that evidence?

"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."

Most people haven't been washing their hands properly either, and yet the government has gone to great lengths to educate people on how to properly wash their hands. There's no reason they couldn't do the same with mask fitting.
Maybe after things have settled down. Right now, the right thing to do is to hand those out free to everyone, to normalize the safe behaviour. You can make your buck later.
So long rust, why I built ZZ
This exists in Gitlab already.
So, here's some information I've been seeing about masks.

1. After breathing in a mask for a while, the outside is now "potentially contaminated" with COVID19. Treat the outside of a mask as if it were infected.

Do NOT touch the mask while using it. Do NOT rub your eyes, etc. etc. Do NOT put on the mask backwards. It is recommended to color-code the inside and outside to make it easier to see.

2. There are a ton of discussions about how to disinfect a cloth mask. Kitchen equipment is commonly recommended. Boiling the mask, letting it sit in the oven for some time, etc. etc. You only need to raise the temperature to ~212F or so (boiling) to disinfect. (maybe lower, but boiling is easy because the bubbling water serves as a temperature gauge).

There may be easier chemical treatments, such as bleach when you're washing the cloth mask. But boiling is obviously safe.

----------

Note that "N95" masks are only 95% effective against viruses (even if you did everything correctly). Homemade masks will probably only reach 70% or maybe as low as 50%. You aren't invulnerable, you just have a layer of protection on.

I think this "home made mask" idea is very good. We need to leave the N95 masks for professionals, because the USA has a mask shortage (and N95 masks are disposable. One-time use).

Home-made masks can be reused through washing.
Hi there!

GitLab Product Manager here. I really appreciate the feedback on those features and it helps inform some upcoming work to make them better. The team is currently working on improvements to JUnit parsing (https://gitlab.com/groups/gitlab-org/-/epics/2854) so we can enable those Junit reports by default.

We are also working on the next set of code coverage features to build this category out further and would appreciate any input you might have on the issues there as we're prioritizing and scheduling for the next few milestones (https://gitlab.com/groups/gitlab-org/-/epics/100).

Thanks!

-James H
Product Manager - Testing
Speech From Brain Signals
https://youtu.be/YHFx6O5x5Hw (2019)
Because they want it to be hard.
Even a piece of paper put in front of the face may filter out some particles. The point is that there is possible upside and zero downside to wearing masks, however crappy.

Instead of saying "we messed up, there are not enough masks for everyone, try to make one yourself" the authorities all over the world* are patronising people with "masks are hard to make, also they don't protect against viruses".

* Except for SK, Japan, Singapore, and all other places that wear masks.
Seriously, If these distros still can't come together and get something as simple as screen locking right and consistent on X11, Wayland with a DE like GNOME or KDE, etc then it is difficult to recommend / market any Linux desktop distro to a typical consumer. It really is one of the smallest issues that would turn off a user moving to Linux, just to get work done.

I wouldn't blame them if I see any of them ending up staying on Windows or moving to macOS or outright iPadOS.
> If the virus is present on your mask, it most likely would have already been in your body without the mask.

On the contrary. The virus is on the mask. That's why doctors / nurses wear masks, so that the virus gets stuck in the mask instead of in the doctor.

Now that the virus is on the mask, you need to treat it as if it were a contaminated object.
To be clear, I'm not disputing that masks could stop people expelling or inhaling infectious particles - it's just the claim about not touching your face that doesn't ring true to me.

I do however think that, in general, masks are more needed by healthcare workers. They are on the frontline of COVID-19, and have no choice but to get up close to infected patients - most normal people are able to practise social distancing.
This guy does an amazing piece on masks, gloves and sanitation. Also explains how to remove masks properly. https://www.youtube.com/watch?v=kLWBG_fbJR0&t=1217s
It's the article that has it backwards. You can deduce true from any premise. In terms of the Curry-Howard isomorphism, I can write a program from any input to the one-element type by throwing away the input and returning the one element.

I think the previous comment was alluding to "resolution", where you prove a statement true by assuming it is false, and then deriving a contradiction. That only works in classical logic, though.
I think it more likely that both the 360-day year and the base-60 numbering system came from a common ancestor (the Babylonian's study of astronomy). Perhaps they just took the lunar year and "rounded" it to correspond more consistently with their view of the stars, which put them on the path to both things.
Funky bicycle masks with colors or logos were often 30-80€ in 2016, and despite not being even FFP1. There is an opportunity, but there is also a feeling that health apparel should be bland and ugly if they are serious. It’s like wearing a suit at a programmer interview: Often a hint that one aspires more to the commercial side than the technical side, despite both being competent.
Some quotes:

“Under these conditions, there does not seem to be a significant difference between the mortality rate of SARS-CoV-2 in OECD countries and that of common coronaviruses (χ2 test, P=0.11). Of course, the major flaw in this study is that the percentage of deaths attributable to the virus is not determined, but this is the case for all studies reporting respiratory virus infections, including SARS-CoV-2.”

“Under these conditions, and all other things being equal, SARS-CoV-2 infection cannot be described as being statistically more severe than infection with other coronaviruses in common circulation.”

“Finally, in OECD countries, SARS-CoV-2 does not seem to be deadlier than other circulating viruses.”
I realize HN will think much the same of it either way, but AFAICT that second quote of yours is a lie; she called WhatsApp's encryption unacceptable, not encryption in general.
I'm not spreading misinformation. Most people don't bother to wear the masks correctly, and they provide a false sense of security and overconfidence.
Maybe to prevent a rush on surgical masks so that they are kept for health workers who need them the most?
It wasn't just political reasons. There were experts in the field that were spreading misleading information so as not to cause a shortage of masks for healthcare professionals.

One of the leading Epidemiologists, Ian Lipkin, admitted exactly this on the poscast This Week in Virology this week - https://www.microbe.tv/twiv/twiv-special-lipkin/ at timestamp ~33:30.
The first 2 sound more related to suspend rather than screen locking.
Well none the less, the standard doesn't help if nobody follows it. Since REST is less prescriptive, the tooling is generally more tolerant of all the funny implementations out there. At least, that's what I've found.
U.S. troops ‘dumped Russian convoy in mud’ in Syria
Hprof Viewer and Analyzer
Great website, I just have one suggestion. Before the message to wear a mask have in big red letters: "DO NOT GO OUT IN PUBLIC UNLESS IT IS ABSOLUTELY NECESSARY! No mask is more effective than simply not being around other people. BUT, if you absolutely must go out..."
Quick! Look over there! It's huge distraction!

Cryptocurrency is indeed a hotbed of malfeasance and manipulation. Nothing you've said even addresses that point, let alone refutes it.
The inflammation and damage is seen in traditional arrays that are large and rigid. A thread with low enough moment of inertia will likely not cause as much damage. And the damage is only important if you put the electrodes in an important place... we currently screw two giant lag screws into people’s heads and call it “deep brain stimulation” so I feel optimistic about the long game. But you’d still be right to be wary. And if I had it my way, this technology would never be allowed to exist at all...
Google Meet is terrible, there's a reason why everybody switched to Zoom even in an over-crowded market
I have a masters in supply chain - a large portion of that degree as well as a topic that overlaps math and computer science is operations research [0].

Google has some pretty cool open-source libraries [1] for working with OR type problems as well. Their guide explains some common problems from a high level and should give you some more keywords and topics to dive into as well.

I'd also recommend MIT's SCM course [2], it has a solid curriculum

[0] https://en.wikipedia.org/wiki/Operations_research
[1] https://developers.google.com/optimization/introduction/over...
[2] https://micromasters.mit.edu/scm/
Theories abound:

Babylonian math has roots in the numeric system started by the Sumerians, a culture that began about 4000 BCE in Mesopotamia, or southern Iraq, according to USA Today.

“The most commonly accepted theory holds that two earlier peoples merged and formed the Sumerians,” USA Today reported. “Supposedly, one group based their number system on 5 and the other on 12. When the two groups traded together, they evolved a system based on 60 so both could understand it.”

https://www.thoughtco.com/why-we-still-use-babylonian-mathem...
Sure, but the existence of GitHub has only helped Git grow, not hurt it.
To be fair I’ve seen the same thing happen with Zoom. During a 2 hour meeting with a client, about half of my team was dropped and couldn’t get back into the meeting for several minutes.
The WHO is, unfortunately, not a reliable source. They've repeatedly lied throughout the course of this pandemic. This is probably a well-intentioned one to preserve the global supply of masks, unlike previous lies which served only to make China look good, but the bottom line is that you shouldn't trust what they have to say.
Another Victim of Coronavirus: Science – Bulletin of the Atomic Scientists
No, even putting a scarf in front of the face offers _some_ protection from people sneezing, coughing, spitting, etc.

And in any case, there is zero downside to putting it up, there is no way it can actually harm.

Instead of saying this, and trusting people that they understand that some protection is better than no protection, authorities are patronising people with "false sense of safety", and "masks are actually harmful".
They recommend against it, because recommending the use of masks would expose the universal lack of availability of even basic surgical masks. The on-demand system in the US cannot cope with events like this (no stockpiles).

So, they're recommending we don't use masks, so that more masks are available for medical professionals, so that when most of us get sick via community transmission (because we don't have masks), the medical professionals can also run out of masks while they treat us.
Fascinating, I did not know that, do now - thank you.

I use local wildflower seed harvested from walks the previous year, though mostly from previous years sowings now as got some momentum going.
An arc-minute is a 60th of a degree. And an arc-second is a 60th of an arc-minute. This strongly points to a base-60 origin imo.
When all is said and done a serious re-evaluation of the WHO’s mission and actions during this pandemic needs to take place. When the world needed them most, they failed spectacularly.

In mid January they said that China had no evidence of human to human transmission despite Taiwan telling them otherwise, probably due to political reasons. They refused to declare a pandemic weeks after it was clear it was one, and even now they still insist on ignoring the data we have around masks.
Both. glibc... No. And without boring you with anecdote I can sum it up by saying: Linux DE's feel like cheap Windows XP or OSX knockoffs. What's worse is every DE and their forks have their own duplicate DE companion programs such as explorer and notepad clones. I liken them to a Potemkin village; well polished but once you start looking behind things...
Replacing with Orgmode