So, suppose this works and a patient is revived to the point they are no longer brain dead. Will they be declared living? Will BioQuark assume responsibility for their care? Or, being legally dead, can BioQuark terminate them when they are done?
Suppose I have two marbles in my bedside drawer, one red, one blue. In the morning, I get up and put one in my pocket, leaving the other behind, but without looking at either. I then go to work, say on Alpha Centauri, 4 light years away (say in a NAFAL spaceship). At some point, I pull out the marble in my pocket, and see that it is red. I now know instantly that the marble in my drawer back on Earth, four light years away, is blue.
Can that be used for communication? No. Quantum entanglement makes the choices more complex, but it doesn't allow for FTL communications any more than the marbles in my pocket do.
"For more than 200 years, we have believed in the science of determinism..."
Our culture being steeped in Newtonian mechanics (where everything is fundamentally predictable) for a very long time has had a strong psychological influence, even after QM comes along to show that determinism itself is very questionable as a principle.
Supervenience is a trickier question than most realize, even top-flight physicists.
Hawking is arguing that, in order for quantum mechanics to work, a black hole has to be deterministic (albeit in a way that we could never possibly check).
Schrodinger's equation is deterministic (unitary). It's measurements that introduce uncertainty, oddly enough by making some things certain.
Go outside. Open your eyes. You have just destroyed a host of quantum information - the quantum measurement process is not unitary.
Why are we more special than a black hole? Why should we assume that we can cause the wave function to collapse just by looking at the stars at night but that a blackhole cannot do so even when it eats a star whole?
I am with Penrose on this - it is simplest to assume that quantum systems will in fact no longer evolve unitarily under gravity, e.g.,, in black holes. Information will thus be lost - just as it is every time you use any of your senses.
If it was up to me, I would select a handful or articles to describe what was being done (i.e., one on wikipedia, one on the Moon, one on the Lunar X prize, one on whatever Apollo mission they are going to land near, maybe one on Germany, no more than order 10 at all) and then select items randomly until the 20 GB was used up.
We seriously don't know what the "audience" would want to read about; doing it randomly would to some degree avoid the "they included all this junk no one cares about, and totally neglected X" problem with most historical summaries from, say, the classical era.
Given that we know that Kepler has a bad batch of reaction wheels, that two of the four have already failed, and that this emergency mode happened while the spacecraft was being repointed to the Galactic Center for a microlensing campaign, which inevitably would mean a lot of reaction wheel use, I very much fear that this means that another reaction wheel has failed and the K2 mission is over.
true, but still one restart should do it. Not a whole series of back and forth single responses. I'd think the craft would be sending a stream of status information anyway assisting in pinpointing the issue.
I doubt the computer system is the problem here, or that it crashed. The problem is more likely an unexpected response to a command for the spacecraft to do something.
To use a metaphor, this is not like a robot with a CPU crash, this is like a robot reporting that it stopped moving because can't tell what its leg is doing.
true, but still one restart should do it. Not a whole series of back and forth single responses. I'd think the craft would be sending a stream of status information anyway assisting in pinpointing the issue.
No, because you have to figure out what went wrong before you try and issue such commands. The first rule is "do not lose the spacecraft," which can (and has) happened if the wrong commands are uploaded.
The spacecraft will send back a bunch of status info (bandwidth is limited, so that typically won't be everything), the spacecraft engineering team puzzles over that, and then send commands such as "try doing X, and then send us back the readings from sensors Y and Z." 15 minutes+ later they get the results from that back, and iterate. They probably have a spacecraft emulator here on the ground they try such things on first, which also adds to the time. This all takes time, and it really cannot be rushed much (besides having full DSN time to do these iterations, which a declared emergency will get you).
A gyro to rotate you, not sense your rotation - here are the Kepler reaction wheels. (It has already had 2 reaction wheel failures.)
Note: Inertial sensing gyros are generally gimbaled, so they can stay rotating in the same direction. Reaction wheels are generally fix mounted, and are spun up and down as needed to get the desired attitude (or rate of rotation). If the spacecraft is being torqued by something (say, a small gas leak), the wheels will spin faster and faster to soak up the excess angular momentum until they reach their design limit, and have to be despun. This is called a momentum dump, and requires some other system (i.e., thrusters) to finally get rid of the excess angular momentum.
This is the "ultimate safety net" for SOHO. In ESR, the spacecraft attitude is controlled entirely by hardware that senses the approximate position of the Sun and fires thrusters autonomously to ensure that the spacecraft is pointed towards the Sun (plus/minus 2 degrees on each axis). The spacecraft roll is not controlled by the hardware, but it can be controlled by ground intervention.
In other words, the spacecraft goes into a mode where the only thing it does it point at the Sun, to keep the power flowing, and it does so by using fuel, not the reaction control wheels. As fuel is a limited resource, that would be bad if it continued too long.
I am not aware of any company doing this sort of accuracy with 802.11 time of flight (ToF, or ranging), so this is news. Directional Radio (angle of arrival or AoA) is different technology, and will have different pros and cons versus ToF.
In order to do 10 cm ranging (or "time of flight," as in this paper), you need (with a reasonable SNR, say 10), to have a total bandwidth of order 300 MHz. The 802.15.4a UWB standard provides better than 10 cm ranging, but with a bandwidth of 500 MHz, considerably wider than the bandwidth of a 802.11 (WiFi) channels. especially for 802.11b and its successors at S band (2.4 GHz), which are no more than 40 MHz.
This new Chronos system reproduces some of the technical capabilities of 802.15.4 using, not wider channel bandwidths, but a wider _spanned_ bandwidth, as in Very Long Baseline Interferometery:
"Chronos therefore transmits packets on multiple WiFi bands and stitches their information together to give the illusion of a wideband radio."
To do that and get good ranging from it is a impressive technical feat, as you have to maintain phase coherency across these channels (i.e., you have to know the relative delays imposed by switching between channels, and you need to calibrate these to 0.1 nanoseconds or better).
This may make 802.11 WiFi competitive with 802.15.4 (both UWB and Zigbee); both are communications protocols, but 802.15.4 had, until now, much better ranging performance, which was needed if you want to locate, say, machinery in a factory. Given that everyone understands WiFI and tends to have it installed already, this could really give 802.15.4 vendors problems,
I doubt the order they got was "illegal" as you say. Just because you don't like it, that doesn't make it "illegal". But yes, the article has a link to another article that says that the FBI got a federal judge in Riverside, California to give them an order mandating that Apple create a custom firmware file. It happened almost 2 weeks ago and this is the first I'm hearing about it.
You might want to consider changing your news sources, as the court order was issued in February, and this has been extensively covered, up to and including a Congressional hearing on March 1.
Saying Sidwell Friends is best known because President Obama's kids go there is something like saying that the White House is best known because JFK lived there. The school has been regarded as one of the premier schools in the DC area for over a century; Theodore Roosevelt's son Archibald, Richard Nixon's daughter Tricia, Bill Clinton's daughter Chelsea Clinton, and Vice President Al Gore's son, Albert Gore III, all graduated from Sidwell Friends.
Should it be a living wage to work as a fry cook? Should it be a living wage to work in a convenience store?
Do you want to eat in diners? Do you want to go to convenience stores? If so, the answer needs to be yes.
I don't really know just what you mean by "pool their resources," but I suspect it means "get others to provide them with support so they can continue to live while doing their jobs." If so, that's what you, the customer of the diners and the convenience stores, should be doing.
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So, suppose this works and a patient is revived to the point they are no longer brain dead. Will they be declared living? Will BioQuark assume responsibility for their care? Or, being legally dead, can BioQuark terminate them when they are done?
Suppose I have two marbles in my bedside drawer, one red, one blue. In the morning, I get up and put one in my pocket, leaving the other behind, but without looking at either. I then go to work, say on Alpha Centauri, 4 light years away (say in a NAFAL spaceship). At some point, I pull out the marble in my pocket, and see that it is red. I now know instantly that the marble in my drawer back on Earth, four light years away, is blue.
Can that be used for communication? No. Quantum entanglement makes the choices more complex, but it doesn't allow for FTL communications any more than the marbles in my pocket do.
Statutory damages need have no connection to any actual damages, and generally they don't.
"For more than 200 years, we have believed in the science of determinism..."
Our culture being steeped in Newtonian mechanics (where everything is fundamentally predictable) for a very long time has had a strong psychological influence, even after QM comes along to show that determinism itself is very questionable as a principle.
Supervenience is a trickier question than most realize, even top-flight physicists.
Hawking is arguing that, in order for quantum mechanics to work, a black hole has to be deterministic (albeit in a way that we could never possibly check).
Schrodinger's equation is deterministic (unitary). It's measurements that introduce uncertainty, oddly enough by making some things certain.
Go outside. Open your eyes. You have just destroyed a host of quantum information - the quantum measurement process is not unitary.
Why are we more special than a black hole? Why should we assume that we can cause the wave function to collapse just by looking at the stars at night but that a blackhole cannot do so even when it eats a star whole?
I am with Penrose on this - it is simplest to assume that quantum systems will in fact no longer evolve unitarily under gravity, e.g.,, in black holes. Information will thus be lost - just as it is every time you use any of your senses.
If it was up to me, I would select a handful or articles to describe what was being done (i.e., one on wikipedia, one on the Moon, one on the Lunar X prize, one on whatever Apollo mission they are going to land near, maybe one on Germany, no more than order 10 at all) and then select items randomly until the 20 GB was used up.
We seriously don't know what the "audience" would want to read about; doing it randomly would to some degree avoid the "they included all this junk no one cares about, and totally neglected X" problem with most historical summaries from, say, the classical era.
What were you thinking of? Did you think that the FBI was stupid?
Given that we know that Kepler has a bad batch of reaction wheels, that two of the four have already failed, and that this emergency mode happened while the spacecraft was being repointed to the Galactic Center for a microlensing campaign, which inevitably would mean a lot of reaction wheel use, I very much fear that this means that another reaction wheel has failed and the K2 mission is over.
true, but still one restart should do it. Not a whole series of back and forth single responses. I'd think the craft would be sending a stream of status information anyway assisting in pinpointing the issue.
I doubt the computer system is the problem here, or that it crashed. The problem is more likely an unexpected response to a command for the spacecraft to do something.
To use a metaphor, this is not like a robot with a CPU crash, this is like a robot reporting that it stopped moving because can't tell what its leg is doing.
true, but still one restart should do it. Not a whole series of back and forth single responses. I'd think the craft would be sending a stream of status information anyway assisting in pinpointing the issue.
No, because you have to figure out what went wrong before you try and issue such commands. The first rule is "do not lose the spacecraft," which can (and has) happened if the wrong commands are uploaded.
The spacecraft will send back a bunch of status info (bandwidth is limited, so that typically won't be everything), the spacecraft engineering team puzzles over that, and then send commands such as "try doing X, and then send us back the readings from sensors Y and Z." 15 minutes+ later they get the results from that back, and iterate. They probably have a spacecraft emulator here on the ground they try such things on first, which also adds to the time. This all takes time, and it really cannot be rushed much (besides having full DSN time to do these iterations, which a declared emergency will get you).
A gyro to rotate you, not sense your rotation - here are the Kepler reaction wheels. (It has already had 2 reaction wheel failures.)
Note: Inertial sensing gyros are generally gimbaled, so they can stay rotating in the same direction. Reaction wheels are generally fix mounted, and are spun up and down as needed to get the desired attitude (or rate of rotation). If the spacecraft is being torqued by something (say, a small gas leak), the wheels will spin faster and faster to soak up the excess angular momentum until they reach their design limit, and have to be despun. This is called a momentum dump, and requires some other system (i.e., thrusters) to finally get rid of the excess angular momentum.
From the SOHO spacecraft web page:
In other words, the spacecraft goes into a mode where the only thing it does it point at the Sun, to keep the power flowing, and it does so by using fuel, not the reaction control wheels. As fuel is a limited resource, that would be bad if it continued too long.
In countries, that do not tax wealth, only your actual income matters to your tax-bill. What you already have is irrelevant.
I'm guessing you don't own much real property.
I don't get the "sadly" there.
There is the little detail that (as usual) basically everything Putin said is the literal truth, not that you would know that listening to NPR.
At least the floppies didn't auto-run. You were safe unless you actually booted the computer with the durn thing.
IIRC, "Stoned" would infect any machine that mounted an infected floppy.
In 1989, people would plug random floppies into their computers. At least one early computer virus was spread that way. The more things change...
I am not aware of any company doing this sort of accuracy with 802.11 time of flight (ToF, or ranging), so this is news. Directional Radio (angle of arrival or AoA) is different technology, and will have different pros and cons versus ToF.
In order to do 10 cm ranging (or "time of flight," as in this paper), you need (with a reasonable SNR, say 10), to have a total bandwidth of order 300 MHz. The 802.15.4a UWB standard provides better than 10 cm ranging, but with a bandwidth of 500 MHz, considerably wider than the bandwidth of a 802.11 (WiFi) channels. especially for 802.11b and its successors at S band (2.4 GHz), which are no more than 40 MHz.
This new Chronos system reproduces some of the technical capabilities of 802.15.4 using, not wider channel bandwidths, but a wider _spanned_ bandwidth, as in Very Long Baseline Interferometery:
To do that and get good ranging from it is a impressive technical feat, as you have to maintain phase coherency across these channels (i.e., you have to know the relative delays imposed by switching between channels, and you need to calibrate these to 0.1 nanoseconds or better).
This may make 802.11 WiFi competitive with 802.15.4 (both UWB and Zigbee); both are communications protocols, but 802.15.4 had, until now, much better ranging performance, which was needed if you want to locate, say, machinery in a factory. Given that everyone understands WiFI and tends to have it installed already, this could really give 802.15.4 vendors problems,
My understanding is that DAESH / Al Quaida have both gone hard-core on their message security. The ones that don't tend to wind up dead.
I doubt the order they got was "illegal" as you say. Just because you don't like it, that doesn't make it "illegal". But yes, the article has a link to another article that says that the FBI got a federal judge in Riverside, California to give them an order mandating that Apple create a custom firmware file. It happened almost 2 weeks ago and this is the first I'm hearing about it.
You might want to consider changing your news sources, as the court order was issued in February, and this has been extensively covered, up to and including a Congressional hearing on March 1.
This is a tactical defeat for the FBI, as they got neither compliance nor a precedent. The strategic case, as you say, still remains open
Really. This article is nothing less than delusional. Is Ars Technica just taking dictation from the FBI now?
Saying Sidwell Friends is best known because President Obama's kids go there is something like saying that the White House is best known because JFK lived there. The school has been regarded as one of the premier schools in the DC area for over a century; Theodore Roosevelt's son Archibald, Richard Nixon's daughter Tricia, Bill Clinton's daughter Chelsea Clinton, and Vice President Al Gore's son, Albert Gore III, all graduated from Sidwell Friends.
What could possibly go wrong?
Should it be a living wage to work as a fry cook? Should it be a living wage to work in a convenience store?
Do you want to eat in diners? Do you want to go to convenience stores? If so, the answer needs to be yes.
I don't really know just what you mean by "pool their resources," but I suspect it means "get others to provide them with support so they can continue to live while doing their jobs." If so, that's what you, the customer of the diners and the convenience stores, should be doing.