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throwaway9870

896 karma · joined August 17, 2018

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throwaway9870··on Debugging C with Cosmopolitan Libc
You want the program to hang indefinitely in production because it hit an assert?
throwaway9870··on 12,000 Facebook employees, 15% of its workforce, may lose jobs amid quiet layoff
Sure, until they are sick and they suddenly realize the quality of the medical equipment is actually more important. Or there is a disaster and they realize getting electricity or having satellite comms is more important. God forbid you end up in a war and the quality and innovation in your weapons determines if you live or die. Don't even get me started on food.

Facebook, Instagram and WhatsApp are only important when life is good. They are icing on the cake. But once things go south, they can be quickly discarded.

throwaway9870··on Russians hit the office and R&D center of Samsung in Kyiv
Not true, Sherman proved it can work to great effect. In some cases like London, it strengthened the will of the civilians, in other wars it did not.
throwaway9870··on Turns are better than radians
Just out of curiosity, where did tau come from? I never heard of it used for 2pi, and frankly, it seems like a poor choice because in engineering it is one of the most common symbols used (time constant tau).
throwaway9870··on The Fed plans to sharply boost unemployment
Please clarify what you mean by "dropped". If you are talking over a 12 month window, that is most certainly not the case:

https://www.bls.gov/cpi/

Ignoring CPI, inflation is rampant in many other areas such as agriculture (basically everything is up) and manufacturing of good (again, everything seems up, metal, paint, fasteners, etc.)

throwaway9870··on The Twisted Life of Clippy
I knew Cliff and Byron at Stanford. Despite the reputation of Clippy, they were two wonderful, talented and amazingly smart people.
throwaway9870··on Ask HN: Boring but important tech no one is working on?
EDI gateways and conversion. Super important to large companies and the existing companies that can convert and manage the stream of it are incompetent at best. Small companies that interface with large companies use 3rd party gateways for conversion and compliance purposes. Great MRR business if you don't mind boring and no how to build reliable systems.
throwaway9870··on Startup is selling tech to make call center workers sound like white Americans
The accents bother me when I cannot understand what they are saying despite asking them to repeat themselves multiple times. Nobodies fault, just difficult communication. Anything that can help this is welcome.
throwaway9870··on An opinionated approach to GNU Make
When you come at people with the attitude the author has, you should expect it right back at you. That is why anyone who knows how to give a proper talk or write a professional paper does not do that. Leave it to popular culture sites to treat people like that, it should have no place in professional presentations.
throwaway9870··on Nobody wants to teach anymore
You make the job bad enough, no wages will keep people in it.
throwaway9870··on Nobody wants to teach anymore
> However much they're paying teachers, it's clearly not enough, because not enough people are willing to do the job for that amount of money.

The problem is that the scope of the job has changed and you can't pay people enough to do it. Here are some issues, straight from teachers I was talking to last week:

* Admin who constantly wants teachers to do more with no additional resources so they can get credit for it and advance their career. They were very frustrated by this.

* Teaching evaluation based on absolute standardized scores rather than relative. So you can have a bad class, lift them a lot, but still be viewed poorly because on absolute terms, they are still weak. You might say that evens out over time, but it doesn't because some teachers are better with difficult students, so they get more than their share of these issues.

* Special needs students mainstreamed - kids with emotional issues that flip desks and yell out constantly, physical issues such as seizures if they bump their head, but parents will not let them wear protective gear because they will stand out, elementary school kids who are constantly in physical altercations with other kids.

* Kids come to school not having eaten since the day before, cloths that haven't been washed in days, etc.

* Unable to give accurate grades because parents fight back and so teachers are forced to pass kids even though they know they are just pushing a big problem on the next teacher.

* Zero support from parents and in many cases, outright hostility.

* The classroom is a minefield regarding what can be discussed and cannot be discussed. Everyone has an opinion on how it should be done, but almost none of them have ever actually taught.

throwaway9870··on Nobody wants to teach anymore
People keep saying crap wages, but put some real numbers up here. What do you consider crap wages?
throwaway9870··on Nobody wants to teach anymore
The problem with teaching is that the role has expanded way beyond what it used to be and teachers are expected to do FAR too much in the classroom and they get minimal support from admin who are more worried about their careers than supporting teachers.

I just had this conversation last week with a couple teachers. If this matters to you, I suggest you find some older teachers who have been around long enough to actually see how the job has changed and ask them what they think.

It has become an impossible job for any amount of money.

throwaway9870··on Physical buttons outperform touchscreens in new cars, test finds
I accidentally turned on manual shift while recently driving I am unfamiliar with. WTF. Didn't know how to turn it off and had to drive that way until I could safely pull over, put in park, and then back in drive. Bat-shit insane.
throwaway9870··on Milwaukee Tool Raises the Bar with New USA Factory
QA testing is easier said than done. There are few firms the in the world that could do complete QA testing on a TV for example.
throwaway9870··on Milwaukee Tool Raises the Bar with New USA Factory
No, perfect capitalism would include having perfect knowledge of the product, which is exactly the opposite of this situation.
throwaway9870··on Use one big server
How do you use one big database when some of your info is stuck in an ERP system?
throwaway9870··on A looming copper crunch and why recycling can’t fix it
I am fairly sure type M is used in normal residential construction. L is heavier and use for more underground or commercial applications. You can quickly tell the difference because M has red writing on it, while L have blue.

The problem is there are no "L" fittings and the normal fittings used for L copper can be quite poor. For this reason and others, some people like ProPress fittings which are very high quality (and expensive).

throwaway9870··on The New B-21 Stealth Bomber to Be Revealed Later This Year, Senator Says
Bombers can be recalled during flight.
throwaway9870··on Ford's answer to EV supply chain hell: Cheaper batteries
Ford bought New Holland back in the 80s. New Holland was very vertically integrated and Ford, after taking the reins, declared that they were going to teach New Holland how to become recession proof by outsourcing as much as possible and pushing the risk onto the suppliers. Yes, there is some logic in that plan, but on the other hand, it comes with a whole other set of risks.
throwaway9870··on The true costs of inflation in small-town Texas
So has the goods available. I suspect China's ability to manufacture cheaply and in huge quantities has masked a lot of the increase in the numerator.
throwaway9870··on Netflix is in rough shape. This week will determine its future
Video production and distribution seems to be a very different model than music so I am not sure any comparison with Spotify was ever valid.
throwaway9870··on Show HN: I built an app for when I talk too much in online meetings
I really wish a feature was added to online screen sharing that showed a pie chart of the time each participant was talking. I think it would help a lot of people who talk to much (probably myself included).
throwaway9870··on CP/M is really open-source now
I have never heard that before. Do you have a reference? What I have read is that Bill Gates's mother was on board of directors of United Way with the chairman of IBM.
throwaway9870··on Twitter Layoff Started Today
While saving 6 months might be possible, I would love for you to point me to a high-yield savings account.
throwaway9870··on Transporting food generates whopping amounts of carbon dioxide
So do the math and show us the equivalent amount of electricity to equal current farming in America.
throwaway9870··on The GPU shortage is over
Back when I was involved with this, the answer was: "it is hard to answer". A number of years ago, I was working with a Global Foundaries fab on a cutting edge process node and they had no idea how to estimate the lifetime degradation due to high temp. The issue was it was unknown on how to accelerate the effects of high-temp for some of the failure mechanisms. I seem to recall hot-carrier injection being one such mechanism, but I don't recall for sure.

If you can't accelerate the failure mechanism in a well defined way, you cannot lab test long-term reliability other than just letting the system run. So if you want to guarantee 10 yrs of lifetime, you need to run it for 10 yrs. Obviously, that doesn't work for most products. Instead you have to rely on models, which, for a new node, might not be proven very well.

Bottom line was this vendor shipped products that nobody could really be sure would last the promised lifetime. This was regarded as a top silicon fab in the world. Back then, finer geometries were much harder because of new failure mechanisms. I don't know state of art today, but I would not be surprised if measuring reliability is still not a really hard problem for new nodes.

Edit: I am just referring to silicon issues, the rest of the PCB has its own set of issues totally separate. Generally however, those are better understood than a new process node.

throwaway9870··on YouTube removes criticism of dangerous fractal wood burning, but leaves up tips
You must have charged it through some step up device, otherwise the max voltage on the cap is the battery voltage which isn't going to shock you.
throwaway9870··on YouTube removes criticism of dangerous fractal wood burning, but leaves up tips
What you care about is how much charge is at that high voltage potential because current is charge/sec. Charge due to stray capacitance can be quite dangerous because if you don't know what you are doing, the amount of stray capacitance can be higher than you expect. I would be very careful doing anything with kilo-volts using a circuit, as opposed to a static charge device, such as Van de Graaff generator.
throwaway9870··on YouTube removes criticism of dangerous fractal wood burning, but leaves up tips
Current flowing through your body is what kills you. But it doesn't flow through you just because it is a high-current supply (think car battery for example). It flows through you because the source voltage divided by your impedance is what controls how much current flows through you. Impedance is the general concept for resistance and basically indicates how current and voltage are related. The higher the impedance, the less current flows. Wearing rubber gloves would increase your impedance from hand to hand significantly.

So while high current does kill you, what causes it is high voltage. What is considered high? Depends on your impedance (ex. are your hands sweaty or dry?).

When dealing with high-current systems, there are safety procedures and concerns, but they are generally different than high-voltage. The systems I have dealt with are more about burns than electrocution. For example accidentally shorting out a fork lift battery can be spectacular in a bad way.

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