skysight-inc/HackerNews huggingface dataset:
For those people wondering about what percentage of PM2.5 and PM10 are caused by non-exhaust emissions.

"NEEs are currently believed to constitute the majority of primary particulate matter from road transport, 60 percent of PM2.5 and 73 percent of PM10 – and in its 2019 report ‘Non-Exhaust Emissions from Road Traffic’ by the UK Government’s Air Quality Expert Group (AQEG), it recommended that NEE are immediately recognised as a source of ambient concentrations of airborne particulate matter, even for vehicles with zero exhaust emissions of particles – such as EVs."
> Using a popular family hatchback running on brand new, correctly inflated tyres, we found that the car emitted 5.8 grams per kilometer of particles.

So this is based on n=1, very suspicious.

If tires really were this big a source of PM emissions then how would levels in US cities gone down through vehicle pollution control measures. Something is not adding up here.
Yes, it’s called vanilla css.
Disorders of the waking-sleeping “interface” can be really weird.

Mine: occasionally, when I’m really really tired, as I fall asleep I experience a buzzing in my head that starts out soft and gets louder and louder. After a few moments it’s accompanied by extreme panic, temporary whole-body paralysis, and an uncontrollable need to wake back up. This happens over and over and over again, until I finally get out of bed, eat something, wait half an hour, and try again.

I have never seen a medical authority acknowledge this particular disorder, but over the years I’ve seen individuals on reddit mention the same thing. I have to believe it’s due to parts of the brain shutting down in the wrong order as it attempts to transition to sleep.
Parent clearly stated it as opinion.
Derek Lowe, as always, has some great insight into possible treatments and vaccine development (and drug discovery in general):

https://blogs.sciencemag.org/pipeline/archives/2020/03/06/co...
How the Reality of Water Scarcity Weighs Heaviest on Women
Best case scenario - Musk is being dishonest
Laravel seems to be doing great. The number of improvements in DX and the ecosystem is moving at a nice pace. I often compare it with Ruby On Rails framework (my primary stack) which is unfortunately not focusing much on DX anymore.

For instance, Laravel has been consistently improving authentication by providing official packages right into the framework. Whereas, Rails still doesn't have an official gem backed into the framework. The recent change of hands of "devise" gem would have been a great opportunity for Rails to take it over.
> This is computer architecture design, not the NFL.

Why would this be the one topic about which people aren't tribal? There are people with Intel tattoos, same with AMD. They're frequently called "team blue" and "team red". People like to pick sides and belong to camps, and that's not changing.
Yep, but I have only worked on market/users based ideas which invariably need a front end prototype to start with, hence the bias.
So true, all devs should pay attention to backward compatibility, it would make our industry much more robust
The claims here seem dubious. They tested one type of brand new tire. Then they conclude that "high-quality" tires are somehow better without providing any evidence to support that claim. While tires may very well be a source of pollution I have to wonder where the money for the work came from.
Also live in NY and I bought a portable dishwasher 10 years ago and have brought it with me during every move. It's on casters and functions as a countertop (which I need anyway) when not in use.

I went for a few years without using it in my newest apartment because my adapter didn't fit my new faucet. For some reason it took me a few years to think to look for a different adapter.

Anyway I very much appreciate using my dishwasher. It feels like it makes an impact on my life in a way that most other tech doesn't. It feels like magic. You put in dirty dishes and out come clean ones. I liken it to having a washing machine that you put dirty clothes in and they come out clean, dry, and folded.
Gosh, the dismissiveness of the average HN comment in this thread! I am surprised.

Whatever you might think of the author's age or number of data points or whatever other platform you choose to berate him on, he still has a very solid argument: there are things that simply exhaust you when you are doing them. That's a fact.

Haven't you all ever experienced this?

And no, I never grew to like doing the dishes or cleaning the apartment. At 40, I still need some good music and a hole in the schedule of both me and my wife for us to actually not grind our teeth while doing it. So yeah, please only talk for yourself, guys.
I find stuff like this really interesting, a large (double digit) percentage of the population has the condition, and may or may not assume it is normal. I don't have Exploding Head Syndrome, but I do have the Photic sneeze reflex [1], which affects ~20-30% of people. People with the reflex tend to sneeze when they see bright things such as the sun.

My father and I both have it, and it felt great when I told him about it. He was as surprised as I was that it didn't happen to everyone! In a weird way I'm grateful for it, as I'm sure the reflex urged me to stay inside and cultivate my love for computing :). It's too bad it made me dislike the beach as a kid though -- these days I make sure to bring sunglasses.

[1] https://en.wikipedia.org/wiki/Photic_sneeze_reflex
The article is about how the results are worse but the author doesn't like the way things are shown on Google.
Most people can't stop thinking about instant gratification of some form
Hmm. I think I get this on occasion. It sounds like a heavily distorted electronic crunchy buzz like if you touched a guitar jack to some random metal while hooked up to an amp.

I had previously thought these might be “brain zaps” that people describe after stopping anti depressants, even though I never started
The last point needs to really be emphasized. I've had a couple of pretty major career breakthroughs over the last year simply because stuff I worked on in the past suddenly became relevant to my research.

I've also noticed that I become a lot more committed to a project when I bring other people on board.
This would happen to me when my monitor was right next to my bed. (I believe the flash part, while the exploding/popping sound is external).

I would use my computer an hour or more before going to bed, so the monitor would run warm (or even hot).

When I'd turn it off and go to bed, the monitor would cool down over the next, I don't know, between 15 minutes to an hour.

And at some point during the cool down, the plastic would make a popping sound (just once). This would be around the same time I'd be about to fall asleep. And that's when a flash would go off in my head.

This happened pretty much everyday. Now I don't have my monitor sitting next to my bed.
Maybe offtopic but a surprising bit of extra information regarding wear and vehicles:

Road wear scales with the fourth power of axle load, so heavier vehicles do much more damage than one might expect.

Take a 40t truck with 5 axles vs. a small car with a weight of 1t and two axles (e.g. VW Polo, maybe an older VW Golf might only weigh 1t as well):

(8t axle load / 0.5t axle load) = 16^4, i.e. the truck puts 2^16 (65536) times as much wear on the street as the car.

(8t axle load / 1t axle load (SUV)) = 8^4 = 2^12, even comparing it with an SUV and an axle load of 1t each, the truck is still 4096 times worse.

https://en.wikipedia.org/wiki/Road#Maintenance

https://books.google.de/books?id=7Yqxyefv-VAC&pg=PA252&dq=4t...
From the user's point of view the file isn't accessible in any way except through Finder.

If it had read/write permissions as Finder shows it, all apps would be able to, you know, read and write the file.
The Orielles- Disco Volador Review
Best Music Apps for Android
To look at it the other direction, 5.8 g/km times 75,000 km means they have to somehow produce 435 kg of pollution per set of tires.

Without some more explanation (are they building some kind of model to extrapolate to the entire supply chain?) that seems more than a little implausible. It seems most likely from the context that they are measuring shedding of brand new tires and trying to pass that off as a representative value.

I guess the idea is that it’s a contributor to the acute dose in the car’s immediate vicinity, but without that context it seems like another misleading detail.
Ivan Krstić has been trying to push this system for over a decade now. Maybe it just isn’t a good idea because over a decade of iteration and it still isn’t intuitive or exposed to the user in an understandable manner.
I am sure some developers are very good at their job but the average developer like me write more bugs and security issues than a popular and maintained dependency can have.

Moreover, it's getting quite easy to maintain dependencies today. I can think about packages lock files, Docker containers, semantic versionning, or even Github sending me alerts and pull requests when a security vulnerability happens.

I prefer to add a good dependency and having to deal with it rather than writing broken code and fixing it later. Of course I'm not talking about a 5 lines dependency, but real features.
https://news.ycombinator.com/item?id=22518215
I think that boredom also plays a role.
At that rate you would burn through the whole set of tires in less than 50,000km, so how is it possible? Could it be those nubs on new tires are accounting for a majority of the waste up front?
No Waverers Allowed (2019)
My guess is that particulate solution due to those emitted from tires is probably very localized near highways.
Out of curiosity, how would a "libertarian" propose we achieve economic anything without large individual concentrations of wealth?
> Third-party apps are sandboxed on macOS. You have to explicitly grant them access to the file system.

There’s missing nuance there. The “full disk access” and similar permissions apply even if an app is not using the traditional macOS Sandbox. Only software from the Mac App Store is required to use the traditional Sandbox, but the restrictions on disk access to certain directories apply to all processes not whitelisted (implicitly or explicitly), regardless of Sandboxing.

This nuance is somewhat important because an app listed “Sandbox: No” in e.g. Activity Monitor is still subject to disk access restrictions.
Turin has entered the chat, dioporco
I experience this frequently. Right on the edge of loosing consciousness, I sometimes hear what reminds me of an old wooden screen-door slamming into a doorframe. If you know the sound it's unmistakable. It is preceeded by a woosh, like when your blood-pressure suddenly increases.

It usually jolts me awake for a brief moment. I rarely see flashes of light but it sometimes happens.
People are infected by contact with another infected person. There's a middle ground between "ineffective tracking by authorities through Excel sheets" (as seen in Germany) and giving up privacy and this proposal honestly can't be it.

> Only you, the end user, will ever know if you are in high risk.

In it's current iteration the protocol you propose contains this:

"3. Regularly, e.g. every 6 hours, the AVICOT-APP checks the public “COVID-19 level 0” list on a WHO-organized AVICOT-SERVER. Entries in this are Bluetooth IDs of devices owned/used by officially diagnosed COVID-19 cases, who have given their consent to this publication. The list may be regionally organized, to limit mobile data requirements."

If it is regionally organized this seems like a technical gimmick. If it has a larger scale, there remain privacy implications that would have to be carefully investigated, even with user consent - which dismisses it completely for any form of rapid deployment. Take the above, you either risk exposing Bluetooth hardware identifiers of those consenting known infected or, rely on me uploading my data to whoever it is that runs this. A better model for that part would be something like what HIBP does for password breaches but my point is that the proposal does not address this and since puts doubt on the "anonymity" part of the title. Even if it did, a large part of HIBP is that I can't control that HIBP has the information in the first place. The submission calls all this "sufficiently anonymous" and I would argue that there is no such thing, especially in this context.

Or point 4. "The server then evaluates the data with an algorithm designed to estimate the infection risk." why? We have people that can do that, more effectively than a hastily written algorithm. This just adds unnecessary fluff. Point 5 is just redundant with point 4.

I have no doubt that this is done with the best intentions in mind but the road to privacy hell is paved with those. We would be better off if we used our collective tech knowledge to build something that makes us more prepared and facilitates collaboration on the authority level for the next time we might need it.
It sounds like you're too goal oriented. Leisure activities can be simply about enjoying the activity and don't have to lead to anything. If you like to work on an idea, work on it. When you're annoyed by having to put a front end on it, just don't. You've played with your ideas, you've hopefully learned something and enjoyed passing the time. Now you are free to drop it like a hot potato and move on.

I spend my work time on embedded engineering. I like it well enough, but it's stressful because there are goals to be met and drudge work to be done. But I spend my free time working on classic sports cars. I fix what I want on the car and if I'm tired of it, I just get rid of it and move on to something else. No goal, no stress, just enjoyment.
What a simplistic way to put things in.

You need to do a lot of things you do not love before you have the skills, the vision and the attitude to actually do what you love, and accomplish the goals you want to accomplish...

As a millennial, I think this kind of attitude is the problem with our generation. I mean both simplifying things into instagram-quote-sized senteces like "always do what you love" and also convincing ourselves that if you are not doing what you love, you should be doing something else.

Maybe we should focus more on how to be able to still motivate one-self to do things you do not love so much, but that are necessary.

Often, things that I really do not want to do are necessary for me to achieve things I really want to achieve.

Articles like this, and the beliefs they seems to want to propagate, are probably a big source of depression and failure in young adults (and not so young adults) these days.
This is a good point. One thing that has helped me is removing other sources of instant gratification, such as social media and television, that condition me to expect an instantaneous high whenever I do something.
I remember a hitchhiking ride in France with a man working in the building and infrastructure industry telling me about these figures, and the intense lobbying against transporting goods on rails...
>you start talking to people then you are hit with reality - no one gives a shit about your idea.

I think this was your first mistake. I believe the author's point is that whatever that thing is, it's important to you and potentially you alone. If it so happens to be interesting to others that's icing on the cake. And, there's at least some chance that that thing you find to be so important others, somewhere, will find it valuable too, more or less. But maybe not, and that's OK.
I think we're seeing a small case study of this in the nursing home in Washington. Out of 120 residents, 13 are dead and have been identified with COVID-19. There were 11 more who died at the nursing home since Feb 19 and haven't been tested, but they said on average 3-6 residents die per month. I think the nursing home scenario is probably a worst case given both age and underlying health concerns (unlike elderly still living in their own home or with their families). Given the Seattle area medical infrastructure, this fatality rate can't be explained by overloading of our facilities.

I really disliked Fauci's comments that "the risk is low" to the American population, pointing to the rate of infection. He hedges this with some hand waving that it could change at any moment. I thought it was irresponsible to say the risk is low when they hadn't done any real testing and we've actually got outbreaks like in Kirkland. Regarding his comment that the WHO fatality rate is too high because of asymptomatic population and the denominator in reality is much higher. Fine. But he doesn't acknowledge that the numerator might be much higher as well. How many 80+ year olds, especially those with preexisting conditions, die and are assumed to have just passed from old age and the preexisting conditions. It is a characteristic of this virus that the people getting killed are the most likely ones not to raise huge red flags early. So in general, I would've preferred him to not say anything about risk until we actually get more numbers and real testing within our population. The average fatality rate hides the fact that this virus is very dangerous to the elderly.
Most of Korea's cases were discovered since late February and have not had a chance to either recover or die (i.e., the numerator is right-censored). Expect the CFR to rise there.
> Wow, thankyou for an excellent answer to my question :)

You bet.

> biological science research

Yeah, similar dynamics play themselves out in all human endeavors. The Ford Pinto gas tank. The Corona Virus. Sub-prime mortgages. It's all examples of the bean-counters and the good-old-boy network overruling the technocrats. Welcome to the human condition.
No. When things roll very tiny pieces break off both the rolling thing and the thing rolled over. If we want to travel by rolling (which seems like a yes) along the ground then that's going to produce PM 2.5 air pollution.

Flying is definitely worse, for at least the medium term and perhaps forever, and magnetic levitation is so expensive you're just not going to do it at scale.

The effect from pushing a stroller will be greatly (much more than linearly) smaller than from a goods delivery truck or a railway train, but it's there. We just have to consider this when deciding what's a good idea.
... because he opened multiple windows and the only one to gather grime was facing the street.
Nothing quite like a grandiose title to make you immediately question each and every word in an article.
In Germany they are tracking down clusters. As a random person you won't get tested, unless you visited a risky region, had contact with an infected person or your doctor orders a test for you. As a German, this strategy makes sense to me.
The issue with the migration is the references (commit IDs) and the fact that branching best practices differ dramatically.
Maybe not all the particles come from the tyre?

They could come from the road, or the brakes, or leaves / dust on the road.
Adobe, A Good open-source Citizen?
How's the AAA industry nowadays? I got out awhile ago (though HoN never really counted as AAA) but it was a fun ride at the time.

Is work life balance a bit better now, or does everyone still push themselves pretty hard?
Another 'interesting' thing: https://en.wikipedia.org/wiki/Sleep_paralysis

(Tell me, Mr. Anderson, what good is waking up if you are unable to move?)

It happened twice to me and still scared the heck out of me the second time. Been there, done that, can't recommend.
It is very difficult. I recently spoke with my best friend who has a 1.5 hour commute each day.

He sees his children for an hour in the morning.

He comes home around 9pm.
> Some companies only hire specialists. If you’re Google, it makes little sense to hire a generalist, I think.

Having been through a Google interview and offer process, this seems exactly backwards: Google selects heavily for generalists, so that they have people who can adapt to and integrate different technologies. (I'm sure they do hire specialists in various areas, but their interview process optimizes for generalists.)
Yes, the tires wear, and the wear can be easily measured by the mass difference between a new tire, worn tire, divided by the distance. Plausible that the total wear is 1-3 orders of magnitude total mass greater than modern tailpipe emissions.

A huge question that is never answered is how much of those worn particles actually become airborne, how many stay airborne for how long, and what is their effect on organisms breathing them.

While the Precautionary Principle says we should assume harm, this entire article seems to assume that every microgram is automatically the most harmful possible pollutant, which is likely untrue, unnecessarily alarmist, and undermines their thesis.
That's why they are poor.
Dude, it comes down to what you want in life.

Being a fit dude in your 60s in your big beach-side house partying with powerful friends? A shadowy person behind a powerful corporation? Having a big loving family? Getting rid of poverty in the world?

Take note of it, stick it near where you wake up most of the time: your phone wallpaper! Visualize! Strategize!

You'll realize that it doesn't happen overnight.

DO NOT DESPAIR! Take steps! Build strategy. Separate in milestones, make it accessible. Nothing great is instant (except if you have a great luck)

Use evernote, stackedit, notion, or whatever that doesn't make you lazy and is quick to access. Use Add to Home Screen feature to make a quick shortcut. This allows you to take things off your mind to rest. Make noises that will get you back on track, reminders!

Be calculative, but don't be cheap in pursuing your dream. Money is just another currency to trade toward your dream and there are many other currencies: relationships, mental health, physical accounts receivable, someone owing you something, other people's attention, fame, incognition.

You will need to trade them to achieve your dreams quicker, (e.g. getting rid of an invaluable relationship like toxic people that can't be helped anymore). Trade money for mental health to help with burnouts by treating yourself for every milestone. Trade money for human friends if you need them for your morale. A good thing about human friends are, most of them will give back if you help them.

Try achieving additional miles.

If a milestone doesn't work, DO NOT DESPAIR. It's just another obstacle to work around.

If you feel something is holding you, identify! Sometimes it's trauma in the past, your core values. Check if they're still valid, if not, trash them. In my experience, it is always fear of something in the past and sometimes if you get rid of your ego and see it from other perspectives, the fear is not valid anymore and you can be free of it.

If this comment turned out helping you, trade that 100$/Mo to help others having the same problem to do the same. If it doesn't, I wish you a better luck finding a better way to achieve things, and I would like to hear good news.

https://www.youtube.com/watch?v=ZXsQAXx_ao0
Every day. My team owns a 10+ year old system. None of the original authors are around any more. We're doing a massive migration of the system (several of them actually) and being able to go back and understand why the code was written the way it was is great. Earlier this week I needed to understand a very odd piece of code. It was making an rpc and if that threw an exception it was trying the same exception in the exception handler with different parameters. Looking back through the history turns out this was because the code used to do something different but during a migration was changed sick that the second set of parameters made no sense. One I understood that contact the fix was trivial and I felt safe making it