Aircraft are not designed to be as reliable as possible by throwing in unlimited amount of redundancy. Usually if an environmental factor affects a sensor, it has a very high chance of affecting other similar redundant items (Remember the birdstrike and landing on the Hudson?).
In fact this is a frequent item of discussion when one is deciding between a single engine airplane and a twin. A twin engine has double the chance of AN engine failing and dramatically less chance of both failing at the same time. Unless an environmental factor was the cause of engine failure. And too many deaths came from just one engine failing and pilot trying to fight the remaining engine instead of focusing on a forced landing.
Most aircraft systems (check out the technical differences between non-TSO and TSO GPS, steamgauges etc) are designed to INDICATE a failure and stop working when there is a failure, rather than try to be as reliable as possible. This way, the pilot has an option to switch to a completely different system. Of course you need some redundancy, especially if the other item works in a different way.
So 5 AoA indicators would not be as good a design as a single AoA indicator that can reliably flag a failure. Since it can't two indicators can show a failure by showing the disagreement between them. Just fly through icing if you have 5 indicators and you'll see why that's not as good an idea. Once a failure is flagged, a pilot can disable systems that depend on it (if not done automatically) and remain in control.
Ideally a transducer that does not depend on vanes (maybe some kind of movement/capacitance sensor that can sense the movement of air along its surface) would be a perfect backup.
It is silly to blame documentation for everything. If you're a pilot too, what would you do if you feel a runaway trim is happening? Id' disable any system suspected of causing problems and manually fly the thing (smaller airplanes). With runaway trim or what feels like runaway trim without autopilot, there would be only one thing for me to disable here. Do you want a manual checklist to specifically tell you that or you wont do it?
Enterprise-minded distros try to lock down and keep clean the config. Scripts do not help, so they try to go the route of monolithic binaries to do the config (smitty in AIX for example). However this rigidity is bad for free-form development and innovation, so more innovation happens in the car where the hood isn't welded shut (BSD, systemd-free Linux, previously Solaris). (Ok so systemd is more like the hood being screwed on with hex allan keys rather than welded).
Systemd (and selinux in Redhat's case) are technologies that work for a certain design vision where stuff is locked down and more predictable. You can use pre-packaged apps that fit this structure with greater ease and security, at the cost of more pain with custom or alpha software (write selinux contexts and systemd service unit files rather than add a bash script under/etc/rc.d)
At these speed, USB4 stands to be way faster than most ethernet out there. 10gbit ethernet has been taking forever due to SPF power issues and manufacturing costs. USB4 with dedicated chip/channels would be twice the speed of full duplex ethernet 10gbit.
However it is not quite being designed for true network and storage connectivity. The need is there but the buffers/latency might hurt it a bit.
I wonder if we'll see dedicated PCIE cards with dedicated USB4 chips so we can have nonblocking shorter-distance network connectivity better than gigabit ethernet
Or even USB-over-fiber next. Now that's a thought.
If a woman is asking for a raise, or is negotiating salary in an interview, if she is shown the company pay categories in a chart that is different from men, that's systematic. If say a man in a similar title and region is shown the salary chart that shows his pay can be in the $45k-$55k range, but the woman is shown a different chart showing $40k-$50k, that would be totally systematic, illegal, and morally wrong.
However if each employee is pushed back with "this is as far as we're willing to go", and the company waits and sees who will bluff leaving, that's not systematic.
Instead of forcing companies to override normal business behavior for women even when they're businesses and general capitalism dictates that they only maximize their profits, the root cause of this issue must be tackled. You can't seriously force businesses to tell women (or visible minorities, or the disabled) "oh you just want $45k, I think we'll just give you $55k because one man with the same title has $55k". In reality the business would rather split the title (Jr, Sr) or make it look like the woman has a slightly different job responsibility.
The real underlying issue is the confidence that the woman can find another job should this one go away. And that she will survive easily if she loses this job. This further depends on if she has a large mortgage or is a single mother of kids or has other dependancies. Perhaps her social circle is important too. Just as women are encouraged by peers to "leave him" when she's having relationship issues, men are encouraged to leave the job when they're unhappy. This really isn't businesses' fault and cannot be fixed by patching the symptoms by forcing more money through businesses which are designed to only maximize profit.
In fact, it should be offensive to suggest that a particular disenfranchised group needs government mandated policies to be equal to the modal group, in productivity OR benefit. This would technically imply that group is inferior.
I agree. I came here to comment on 'why is this strange' but looks like many slashdotters (at least ones with physics backgrounds) feel similarly.
It seems ridiculous when you take a cpu rma to Intel for an rca on some OS crash, but their response is that the cpu is fine, it was a cosmic particle. But it's true, and statistically this can happen to any bit in any register. Especially with the lithography processes producing ever smaller gates with few atoms manning the gate/bit.
She was part of the best leadership VMWare ever had. There's a crowd of developers who want to follow her. It's sad that she had to leave GCP this way, but I agree with the ethics of it. She will do well wherever she will go.
There are antivirus packages with expensive subscription agreements installed in thousands of Linux VMs precisely because of: CYA
I cannot imagine the need for an antivirus on Linux. Either the code breaks into supervisor mode or it does not. Adding more and more hooks into it can only possibly increase your surface area. And antivirus companies aren't exactly the most trustworthy of vendors (their motivation is for you to get infected... a little bit).
I'm not sure they even had to; I remember my C64 came with very detailed circuit diagrams of the whole motherboard and something like a developers guide. They were way over my head but it didn't look like one had to reverse engineer much.
What is a self-taught sysadmin anyway? As opposed to what, a diploma in sysadmining?
I'm probably your age too, got my start from cdrom.com Linux images in 1997. I've tested more than actually developed OSS code. I think I'm one of the guys who pushed 'RTFM n00b' to n00bs. You should understand the reasoning.
The OSS community is about ego. Ego can and does drive excellent code ( because my d1ck is bigger than yours/my code is better than yours). People do measure each other on technical skills more than anything else, and compete on it. A rude genius has a lot of respect, yet a willing and keen n00b is mistreated because his questions are 'below' the time effort of the skilled guys.
Note that I did not say this is how it should be, or that people should have free license to be rude in any setting. That's why colleges, universities and meetups exist; to ease the entry.
My point here is that the OSS community is what it is. The same rudeness that pushes you and other guys away is what drives excellence(not universally), and this setup only exists where nobody is getting paid.
It's actually a good question. Bittorrent and guns are both tools that are enablers for crime. Banning the tool instead of the crime affects legitimate use of the tool by law-abiding citizens.
Here's the difference:
The law is supposed to allow as much freedom as is possible, up to a certain extent. It then puts up a wall even for legitimate uses once the chance of damage has gone high enough. You can legalize hand grenades for recreational use too, or how about selling plutonium for educational purposes. Plutonium doesn't kill people, people kill people. But at that point the chance of damage is so high, basically screw it all and ban it, even for legitimate uses.
This balance was moved with flights where sharp objects and liquids are banned.
On the flip side, a baseball bat can kill a person, and so can riding a bicycle without a helmet. But at this stage, damage potential is relatively small and personal freedoms are important. Instead of trying to put in a sliding scale for everything (bats of certain sizes, faster bicycles, similar to liquid amounts for flights), it's just better to leave personal freedoms be, because a cyclist falling or an angry person with a bat cannot kill dozens of people.
This is why knives are legal to own, hand grenades are not, and guns of different sizes/capacities is where that threshold lies. With this argument, I believe assault/automatic rifles, high capacity magazines have been proven to cause excessive damage compared to the rights and personal freedoms of wanting such firearms. This is in contrast to say bolt action hunting rifles with 5 rounds. And certainly illegally downloading movies and music which you most likely would not be paying for anyway (and impact the financial earnings of artists by a small amount), is far far away from this threshold.
I used to know my way around some ftp servers. I knew (and still know) the exact path and filenames to linux kernels and slackware floppies. I could type wget and get exactly what I wanted before any search engines.
Now I google up files and get a hundred sites; all suspicious and the files download as.exe files.
ftp.cdrom.com was one ftp server that should not have been killed.
I'd be the last person to defend Trump, but I have to add my voice.
As a Canadian, I had my social media accounts checked only once. It was brutal, 4 TSA guys asked me to login into both of my email accounts and facebook to go over months of texts and emails. Many questions were asked and many personal pictures were viewed. They had snarky comments to add but they did not find anything illegal. They did fixate on why my sister in law visited her family in Pakistan many years ago and if she saw terrorists, saw guns, saw bombs there etc etc. Things that make you go WTF.
This went on for more than 2 hours while I paid for the long distance data plan. I have not before or since been checked this way, but I've been super careful of adding bearded friends on facebook or any jokes I share. Anything I write might be held against me years later as I go to my vacation passing through the USA.
Reminds me of MacOS emulation for powerpc/m68k. Sounds good in theory but becomes extremely slow in practice.
This is not just emulating API calls like Wine or containing supervisor mode like most virtualization systems, this is machine language translation on the fly (mame).
Binary translation has always been slow and unreliable, with the sole exception of arcade games in mame.
Now if they were trying to emulate ARM on Intel, that would be much more interesting, especially if Intel got involved and provided microcode to directly run ARM machine code..... can't do that in ARM.
I'm an example in this sample where I run loads of rpm-based and deb-based distros at work and at home. I might have one single VM with slackware running which I do not use much, but slackware's easily my favorite distro.
Slackware is what weaned us into Linux two decades ago (Infomagic CDs). Slackware was easy to open and understand every layer of the OS, and even make packages for. It's also 'cleaner' for purists and still comes with sysv init system. If you're considering installbase as being equal to favorite distro, you're disregarding the enormous goodwill slackware still has from people who hardly use it anymore.
You simply cannot compare x86 IoT devices directly with ARM based chips without comparing: - Static operation - Power usage - Bus types and compatibility - Silicon die size (affecting price)
So far x86 devices have not been winning. In this case you can only really compare this device with the Intel IoT devices which I believe offer more functionality for less price.
So this Slashvertisement only serves to google-cache the fact that this device loses to x86 IoT devices and absolutely cannot be compared to the Raspberry pi.
Make it $10 including the connection board and I'll have a second look.
Doom was the reason my friend and I threw phone cable over walls and street to connect our computers through the serial port. The joy of that dm.exe sync sound!
In hindsight that was dangerous, beside RX and TX we should have connected ground as a minimum. But hey.
Remote ATC controllers are very common in Canada and USA (Peterborough for example). How is this anything new?
Nav Canada has had ATC controllers sit in the ATC facility at Pearson airport while controlling multiple other airports for years or maybe decades. This is very common practice and all pilots know what an RCO is.
The only difference I can spot here is they get webcams. That's hardly an important bit as the ATC never has to have visual of the plane. In a controlled airport the pilot just has to declare I have visual and thats good enough. Works similarly for taxiing aircraft.
Slashdot Mirror
Aircraft are not designed to be as reliable as possible by throwing in unlimited amount of redundancy. Usually if an environmental factor affects a sensor, it has a very high chance of affecting other similar redundant items (Remember the birdstrike and landing on the Hudson?).
In fact this is a frequent item of discussion when one is deciding between a single engine airplane and a twin. A twin engine has double the chance of AN engine failing and dramatically less chance of both failing at the same time. Unless an environmental factor was the cause of engine failure. And too many deaths came from just one engine failing and pilot trying to fight the remaining engine instead of focusing on a forced landing.
Most aircraft systems (check out the technical differences between non-TSO and TSO GPS, steamgauges etc) are designed to INDICATE a failure and stop working when there is a failure, rather than try to be as reliable as possible. This way, the pilot has an option to switch to a completely different system. Of course you need some redundancy, especially if the other item works in a different way.
So 5 AoA indicators would not be as good a design as a single AoA indicator that can reliably flag a failure. Since it can't two indicators can show a failure by showing the disagreement between them. Just fly through icing if you have 5 indicators and you'll see why that's not as good an idea. Once a failure is flagged, a pilot can disable systems that depend on it (if not done automatically) and remain in control.
Ideally a transducer that does not depend on vanes (maybe some kind of movement/capacitance sensor that can sense the movement of air along its surface) would be a perfect backup.
It is silly to blame documentation for everything.
If you're a pilot too, what would you do if you feel a runaway trim is happening?
Id' disable any system suspected of causing problems and manually fly the thing (smaller airplanes). With runaway trim or what feels like runaway trim without autopilot, there would be only one thing for me to disable here. Do you want a manual checklist to specifically tell you that or you wont do it?
Thanks, this video was quite informative
Enterprise-minded distros try to lock down and keep clean the config. Scripts do not help, so they try to go the route of monolithic binaries to do the config (smitty in AIX for example). However this rigidity is bad for free-form development and innovation, so more innovation happens in the car where the hood isn't welded shut (BSD, systemd-free Linux, previously Solaris). (Ok so systemd is more like the hood being screwed on with hex allan keys rather than welded).
/etc/rc.d)
Systemd (and selinux in Redhat's case) are technologies that work for a certain design vision where stuff is locked down and more predictable. You can use pre-packaged apps that fit this structure with greater ease and security, at the cost of more pain with custom or alpha software (write selinux contexts and systemd service unit files rather than add a bash script under
At these speed, USB4 stands to be way faster than most ethernet out there. 10gbit ethernet has been taking forever due to SPF power issues and manufacturing costs. USB4 with dedicated chip/channels would be twice the speed of full duplex ethernet 10gbit.
However it is not quite being designed for true network and storage connectivity. The need is there but the buffers/latency might hurt it a bit.
I wonder if we'll see dedicated PCIE cards with dedicated USB4 chips so we can have nonblocking shorter-distance network connectivity better than gigabit ethernet
Or even USB-over-fiber next. Now that's a thought.
If a woman is asking for a raise, or is negotiating salary in an interview, if she is shown the company pay categories in a chart that is different from men, that's systematic. If say a man in a similar title and region is shown the salary chart that shows his pay can be in the $45k-$55k range, but the woman is shown a different chart showing $40k-$50k, that would be totally systematic, illegal, and morally wrong.
However if each employee is pushed back with "this is as far as we're willing to go", and the company waits and sees who will bluff leaving, that's not systematic.
Instead of forcing companies to override normal business behavior for women even when they're businesses and general capitalism dictates that they only maximize their profits, the root cause of this issue must be tackled. You can't seriously force businesses to tell women (or visible minorities, or the disabled) "oh you just want $45k, I think we'll just give you $55k because one man with the same title has $55k". In reality the business would rather split the title (Jr, Sr) or make it look like the woman has a slightly different job responsibility.
The real underlying issue is the confidence that the woman can find another job should this one go away. And that she will survive easily if she loses this job. This further depends on if she has a large mortgage or is a single mother of kids or has other dependancies. Perhaps her social circle is important too. Just as women are encouraged by peers to "leave him" when she's having relationship issues, men are encouraged to leave the job when they're unhappy. This really isn't businesses' fault and cannot be fixed by patching the symptoms by forcing more money through businesses which are designed to only maximize profit.
In fact, it should be offensive to suggest that a particular disenfranchised group needs government mandated policies to be equal to the modal group, in productivity OR benefit. This would technically imply that group is inferior.
I agree. I came here to comment on 'why is this strange' but looks like many slashdotters (at least ones with physics backgrounds) feel similarly.
It seems ridiculous when you take a cpu rma to Intel for an rca on some OS crash, but their response is that the cpu is fine, it was a cosmic particle. But it's true, and statistically this can happen to any bit in any register. Especially with the lithography processes producing ever smaller gates with few atoms manning the gate/bit.
She was part of the best leadership VMWare ever had. There's a crowd of developers who want to follow her. It's sad that she had to leave GCP this way, but I agree with the ethics of it. She will do well wherever she will go.
There are antivirus packages with expensive subscription agreements installed in thousands of Linux VMs precisely because of: CYA
I cannot imagine the need for an antivirus on Linux. Either the code breaks into supervisor mode or it does not. Adding more and more hooks into it can only possibly increase your surface area. And antivirus companies aren't exactly the most trustworthy of vendors (their motivation is for you to get infected... a little bit).
I hate fear-based architectures.
"People reverse engineered it completely"
I'm not sure they even had to; I remember my C64 came with very detailed circuit diagrams of the whole motherboard and something like a developers guide. They were way over my head but it didn't look like one had to reverse engineer much.
What is a self-taught sysadmin anyway? As opposed to what, a diploma in sysadmining?
I'm probably your age too, got my start from cdrom.com Linux images in 1997. I've tested more than actually developed OSS code. I think I'm one of the guys who pushed 'RTFM n00b' to n00bs. You should understand the reasoning.
The OSS community is about ego. Ego can and does drive excellent code ( because my d1ck is bigger than yours/my code is better than yours). People do measure each other on technical skills more than anything else, and compete on it. A rude genius has a lot of respect, yet a willing and keen n00b is mistreated because his questions are 'below' the time effort of the skilled guys.
Note that I did not say this is how it should be, or that people should have free license to be rude in any setting. That's why colleges, universities and meetups exist; to ease the entry.
My point here is that the OSS community is what it is. The same rudeness that pushes you and other guys away is what drives excellence(not universally), and this setup only exists where nobody is getting paid.
The at91sam9260 is available in TQFP, albeit more like $9 in quantity
There are other QFP/TQFP packages from cypress and (I think) TI that are hand-solderable.
Using flash and DRAM compatible with these chips you can have a sufficiently usable board with nothing BGA on it.
Just look at the Olimex older designs for these chips. And the documentation and reference Linux implementation are nicer than Allwinner.
The only newsworthy item here is the $1 part, but I thought the Rock-something MIPS chip with stacked ram is similar. Correct me if I'm wrong.
Like Children of Dune?
I always like it when the good guys morph into bad guys and vice versa.
It's actually a good question. Bittorrent and guns are both tools that are enablers for crime. Banning the tool instead of the crime affects legitimate use of the tool by law-abiding citizens.
Here's the difference:
The law is supposed to allow as much freedom as is possible, up to a certain extent. It then puts up a wall even for legitimate uses once the chance of damage has gone high enough. You can legalize hand grenades for recreational use too, or how about selling plutonium for educational purposes. Plutonium doesn't kill people, people kill people. But at that point the chance of damage is so high, basically screw it all and ban it, even for legitimate uses.
This balance was moved with flights where sharp objects and liquids are banned.
On the flip side, a baseball bat can kill a person, and so can riding a bicycle without a helmet. But at this stage, damage potential is relatively small and personal freedoms are important. Instead of trying to put in a sliding scale for everything (bats of certain sizes, faster bicycles, similar to liquid amounts for flights), it's just better to leave personal freedoms be, because a cyclist falling or an angry person with a bat cannot kill dozens of people.
This is why knives are legal to own, hand grenades are not, and guns of different sizes/capacities is where that threshold lies. With this argument, I believe assault/automatic rifles, high capacity magazines have been proven to cause excessive damage compared to the rights and personal freedoms of wanting such firearms. This is in contrast to say bolt action hunting rifles with 5 rounds. And certainly illegally downloading movies and music which you most likely would not be paying for anyway (and impact the financial earnings of artists by a small amount), is far far away from this threshold.
I used to know my way around some ftp servers. I knew (and still know) the exact path and filenames to linux kernels and slackware floppies. I could type wget and get exactly what I wanted before any search engines.
.exe files.
Now I google up files and get a hundred sites; all suspicious and the files download as
ftp.cdrom.com was one ftp server that should not have been killed.
copy con
using debug.exe to write primitive apps
writing TSR apps
tasm
masm
Turboc++
"worked just like a small fridge or freezer"
"without using any CPU fans or liquid cooling and similar."
You're simply moving the liquid cooling slightly further away. Liquid cooling IS involved if you have a fridge involved or "similar".
I'd be the last person to defend Trump, but I have to add my voice.
As a Canadian, I had my social media accounts checked only once. It was brutal, 4 TSA guys asked me to login into both of my email accounts and facebook to go over months of texts and emails. Many questions were asked and many personal pictures were viewed. They had snarky comments to add but they did not find anything illegal. They did fixate on why my sister in law visited her family in Pakistan many years ago and if she saw terrorists, saw guns, saw bombs there etc etc. Things that make you go WTF.
This went on for more than 2 hours while I paid for the long distance data plan. I have not before or since been checked this way, but I've been super careful of adding bearded friends on facebook or any jokes I share. Anything I write might be held against me years later as I go to my vacation passing through the USA.
This was during the Obama administration.
It's free like Free Software but not Open-source Software.
Reminds me of MacOS emulation for powerpc/m68k. Sounds good in theory but becomes extremely slow in practice.
This is not just emulating API calls like Wine or containing supervisor mode like most virtualization systems, this is machine language translation on the fly (mame).
Binary translation has always been slow and unreliable, with the sole exception of arcade games in mame.
Now if they were trying to emulate ARM on Intel, that would be much more interesting, especially if Intel got involved and provided microcode to directly run ARM machine code..... can't do that in ARM.
I'm an example in this sample where I run loads of rpm-based and deb-based distros at work and at home. I might have one single VM with slackware running which I do not use much, but slackware's easily my favorite distro.
Slackware is what weaned us into Linux two decades ago (Infomagic CDs). Slackware was easy to open and understand every layer of the OS, and even make packages for. It's also 'cleaner' for purists and still comes with sysv init system. If you're considering installbase as being equal to favorite distro, you're disregarding the enormous goodwill slackware still has from people who hardly use it anymore.
I didn't know there were many southeast asian IT workers in the US.
You simply cannot compare x86 IoT devices directly with ARM based chips without comparing:
- Static operation
- Power usage
- Bus types and compatibility
- Silicon die size (affecting price)
So far x86 devices have not been winning.
In this case you can only really compare this device with the Intel IoT devices which I believe offer more functionality for less price.
So this Slashvertisement only serves to google-cache the fact that this device loses to x86 IoT devices and absolutely cannot be compared to the Raspberry pi.
Make it $10 including the connection board and I'll have a second look.
Doom was the reason my friend and I threw phone cable over walls and street to connect our computers through the serial port. The joy of that dm.exe sync sound!
In hindsight that was dangerous, beside RX and TX we should have connected ground as a minimum. But hey.
Remote ATC controllers are very common in Canada and USA (Peterborough for example). How is this anything new?
Nav Canada has had ATC controllers sit in the ATC facility at Pearson airport while controlling multiple other airports for years or maybe decades. This is very common practice and all pilots know what an RCO is.
The only difference I can spot here is they get webcams. That's hardly an important bit as the ATC never has to have visual of the plane. In a controlled airport the pilot just has to declare I have visual and thats good enough. Works similarly for taxiing aircraft.