The result is that criminals come armed and with the intention of murdering you if they feel threatened.
I really don't buy this. While some criminals may be ok with murder, it takes quite a different mindset to easily transition from simple burglary to murder. Most people don't seem to be alright with killing another person and the risk/reward is vastly different for burglary (where the case will be barely investigated by police and if they catch you, you're looking at a few years tops) to home invasion/murder (where the police will certainly investigate and you'll get life or death if caught).
If someone is ok with murdering the occupants of a house, they are just as likely to murder them anyway just for the hell of it.
The accuracy of your track is only as good as the accuracy of your microphone positioning. (You won't need surveyor grade accuracy, but you will probably need better than the three meter accuracy that WAAS/GPS provides.) You can't beamform if you don't know the relative locations of your microphones. Oh, and did I mention that sound is refracted as the temperature of the air changes? You'll have to account for that too - assuming you can get accurate enough data on current conditions.
I like solving problems and this is somewhat similar to what I do for a living, so I'll speculate...
In a similar approach to the use of a guide star in astronomy, you could use an airliner flying overhead (or a helicopter for a coarse calibration) to calibrate your microphone array and correct for changes in refraction. An airliner or helicopter will be easy to see with a camera, and of a known size, altitude, and speed.
Your understanding of what homomorphic encryption is is fundamentally incorrect. If you apply an operator to an encrypted value in a homomorphic system, the result is also encrypted. So, since the initial values and the results are both encrypted, no information is leaked.
Your entire missive above was predicated on the fact that the results of the function would be plaintext, so as the GP so eloquently put it, "Every single thing you said was wrong." Seriously, the first sentence of the wikipedia page makes it fairly clear:
Homomorphic encryption is a form of encryption which allows specific types of computations to be carried out on ciphertext and obtain an encrypted result which decrypted matches the result of operations performed on the plaintext.
The most surprising thing is that Australia has a Privacy Commissioner. From what I read in the press that is the exact opposite of what I would expect from that government.
Maybe it's like the Drug Czar in the US. I used to think that job sounded awesome when I was a teenager.
Pft. That's just an engineering problem. You have plenty of charged matter with known properties to test it on (though the detector will of course be different). Also simple stuff like turning the device upside down will help suss out instrument bias. At 0.6% equatorial vs polar gravity, you could likely tell a difference in travel time even with a bias in the trap.
But you get a nice annihilation event whenever they touch matter. That makes it much easier.
So you constrain it in a a known location with an electric field (or two, a DC and an AC field, like an electrodynamic balance) in a vacuum, then let go and see where the two photons from the annihilation come from. With a large enough vessel and a sensitive PET-like setup, you should be able to tell whether it hit the top or the bottom of the vessel.
Not to mention, off all the things the Pi is great at, network throughput on either the built-in ethernet port (which hangs off USB) or a second USB attached adapter don't even make the list. Hooray for crazy unpredictable latency spikes as you peg the CPU and poor overall throughput.
So I was right: it's not about using the heat shield to keep it cool. It's about the fact that the radiator was kept in the cargo bay and deployed from the top.
There's no way you can radiate much heat if you're in direct sunlight -- that's why the space shuttle flew upside down in orbit. It kept the heat shield towards the sun, so it had a chance to radiate heat away from the other side.
I doubt that's the main reason why the shuttle flies upside down. The bottom of the shuttle is also black, while the top is white. From a simple light-absorption-radiation point of view, this configuration would lead to heating of the shuttle as a whole. The heat shield is designed to shield from heat conduction due to superheated compressed air in contact with the shuttle during reentry. Shielding from radiative heating makes use of reflective surfaces like what satellites are coated in.
It seems the shuttle would fly upside down to aid in radio communication with the earth, allow viewing of the earth through the windows (a human concern, but still an important one), and to protect the shuttle from earthbound debris (though I'd think the heat shield is the last thing you'd want to damage before attempting reentry).
So they built a machine that ensures that all wealth flows to, and stays with, them and now they're bitching that they have to pay to keep it running? The winners in this system aren't the lower classes.
GP didn't say it was absolutely impossible. She (assuming she, with a nickname like Electronic Bra) said that using current technology and knowhow, high sub-light speed travel is energetically infeasible, and FTL travel has been shown to be impossible with our current understanding of physics and engineering.
No he didn't. He said that there is categorically no chance that we will be visited by aliens because the energy requirement is too high (and FTL is impossible) and nowhere in the universe in all of the time it has been in existence will alien life find a way around those limitations. He wasn't talking about current technology, except to imply that we have reached the summit of technological development and all that's left is dusting in the corners. Our current theoretical framework is complete (even though it clearly isn't), whatever Einstein said is the inviolable word of God (if he didn't leave any explicit exceptions, then all hope on that front is lost), and if we haven't figured out how to do something at this early point in our history then it's infeasible that a hypothetical advanced civilization might accomplish it (even though we can come up with clever theoretical constructs like the Alcubierre drive).
Listen, I understand that FTL is not compatible with current theory. I'm aware of the energy requirements needed for fast interstellar travel. My point is that it is hubris to assume that we have it all figured out and that our theory is adequate to perfectly explain the universe.
As gross as it is to "fall" for a big corp pretending to be indie, I think supporting this film is still a good idea. This is a big studio actually dipping its toes into bittorrent as a distribution method. If this little experiment goes well for them, they may voluntarily enter the 21st century. We could actually benefit from that.
Of course, I wouldn't mind seeing them fail to adapt and die completely, so I'm still a little torn here...
He's not predicting that FTL, etc will be possible. He's saying that you're wrong for declaring it to be absolutely impossible.
Seriously, all of those things he listed would be described as "the sort of 'technology' required is simply magic and can't exist" in the past, yet they came about. The reality is that we don't know what's possible and making sweeping statements like yours is just a sign of hubris and ignorance. You can wrap your mind around the concept that not knowing how something can be possible doesn't mean it's absolutely impossible and making categorical statements like yours only paints you as a fool?
You don't need to go to black powder. Nitrocellulose is incredibly easy to make. The primer would be the most difficult part to make safely and reliably.
A relative of mine had someone break into his home in the middle of the night. He stepped into the hallway with a 12gauge shot gun, saw the intruder in the living room and fired one round into the floor. The intruder ran. The action with the gun was never recorded by police.
Am I the only one here concerned about the floor? The cost of repairing my floor would be greater than the value of anything that could be hauled off by a single burglar.
There's nothing wrong with that. If he owns one gun, a shotgun is the most versatile and a 12 gauge is the most versatile gauge. There are plenty of small game loads available.
When a neutrino impacts a particle in the detector, it creates a cascade of new particles. Since the momentum of the neutrino is conserved in the cascade of particles that can be more easily detected, the direction that the neutrino came from can be determined.
I am apt to point out that a supreme court judge asserted that just because one has enjoyed a living performing a certain service for a time, does not mean that the courts are compelled to ensure their continued profit from that service, nor for the wheels of progress to be halted or reversed. (Paraphrased)
I know Heinlein said that*, but it sounds extremely out of character for a Supreme Court Justice. A quick Google search didn't turn up anything good, which Justice said that?
There has grown up in the minds of certain groups in this country the notion that because a man or corporation has made a profit out of the public for a number of years, the government and the courts are charged with the duty of guaranteeing such profit in the future, even in the face of changing circumstances and contrary to public interest. This strange doctrine is not supported by statute or common law. Neither individuals nor corporations have any right to come into court and ask that the clock of history be stopped, or turned back.
Conversations in a car will never the be the same as a conversation happening with somebody outside the car. People driving with you inadvertently "help" you in a crisis by pausing in their communications during a crisis situation.
Even more than that, an abrupt pause in the conversation from the driver or a loud noise will prompt the person on the other end to ramp up their level of distraction: "OH MY GOD ARE YOU OK?! WHAT'S HAPPENING?! WHY AREN'T YOU TALKING???" and try to compete for your attention at the most crucial moment.
I see where you're coming from, but I want to emphasize that I see being from a poor family with few opportunities for improvement a reason for involvement in crime, but not an excuse for it. I'm not interested in being lenient on criminals because of their upbringing, I'm more interested in fixing the upbringing so that there are fewer criminals. Of course, a real practical solution to this problem is the hard part.
The drug war case is inexcusable on the part of society. Black markets are extremely profitable and even "respectable" bankers like HSBC are involved in them. Legislating a black market into existence is never the correct approach.
You're right that I'm basing my opinion off of a limited sample. My contention is that they are automatically seen as a PhD+, when (in my experience) the PhD portion was just a freebie thrown in to make a more competitive MD program. Academic positions are scarce and very competitive and I'm not excited at the thought of being passed up for one without merit because their PhD+ outranks my PhD.
This was all at a top ranked medical research program, but I'm glad of the news that this isn't true everywhere. I agree that there are certainly more PhDs who deserve their degree less than MD, PhDs, though I'd contend that's just because there are more "just" PhDs.
I'm currently finishing my PhD and have just reached (what I hope) is the bottom of my optimism plot. Perhaps that explains some of the bitterness.
Slashdot Mirror
The result is that criminals come armed and with the intention of murdering you if they feel threatened.
I really don't buy this. While some criminals may be ok with murder, it takes quite a different mindset to easily transition from simple burglary to murder. Most people don't seem to be alright with killing another person and the risk/reward is vastly different for burglary (where the case will be barely investigated by police and if they catch you, you're looking at a few years tops) to home invasion/murder (where the police will certainly investigate and you'll get life or death if caught).
If someone is ok with murdering the occupants of a house, they are just as likely to murder them anyway just for the hell of it.
The accuracy of your track is only as good as the accuracy of your microphone positioning. (You won't need surveyor grade accuracy, but you will probably need better than the three meter accuracy that WAAS/GPS provides.) You can't beamform if you don't know the relative locations of your microphones. Oh, and did I mention that sound is refracted as the temperature of the air changes? You'll have to account for that too - assuming you can get accurate enough data on current conditions.
I like solving problems and this is somewhat similar to what I do for a living, so I'll speculate...
In a similar approach to the use of a guide star in astronomy, you could use an airliner flying overhead (or a helicopter for a coarse calibration) to calibrate your microphone array and correct for changes in refraction. An airliner or helicopter will be easy to see with a camera, and of a known size, altitude, and speed.
I've always called it "scuzzy" as well. Apparently, it was supposed to go by "sexy" but that didn't quite happen.
Your understanding of what homomorphic encryption is is fundamentally incorrect. If you apply an operator to an encrypted value in a homomorphic system, the result is also encrypted. So, since the initial values and the results are both encrypted, no information is leaked.
Your entire missive above was predicated on the fact that the results of the function would be plaintext, so as the GP so eloquently put it, "Every single thing you said was wrong." Seriously, the first sentence of the wikipedia page makes it fairly clear:
Homomorphic encryption is a form of encryption which allows specific types of computations to be carried out on ciphertext and obtain an encrypted result which decrypted matches the result of operations performed on the plaintext.
The most surprising thing is that Australia has a Privacy Commissioner.
From what I read in the press that is the exact opposite of what I would expect from that government.
Maybe it's like the Drug Czar in the US. I used to think that job sounded awesome when I was a teenager.
Pft. That's just an engineering problem. You have plenty of charged matter with known properties to test it on (though the detector will of course be different). Also simple stuff like turning the device upside down will help suss out instrument bias. At 0.6% equatorial vs polar gravity, you could likely tell a difference in travel time even with a bias in the trap.
So overall, probably not a show stopper.
But you get a nice annihilation event whenever they touch matter. That makes it much easier.
So you constrain it in a a known location with an electric field (or two, a DC and an AC field, like an electrodynamic balance) in a vacuum, then let go and see where the two photons from the annihilation come from. With a large enough vessel and a sensitive PET-like setup, you should be able to tell whether it hit the top or the bottom of the vessel.
Not to mention, off all the things the Pi is great at, network throughput on either the built-in ethernet port (which hangs off USB) or a second USB attached adapter don't even make the list. Hooray for crazy unpredictable latency spikes as you peg the CPU and poor overall throughput.
I am pretty sure that you were both right.
So should we stop kicking each other in the back seat? (He started it!)
So I was right: it's not about using the heat shield to keep it cool. It's about the fact that the radiator was kept in the cargo bay and deployed from the top.
There's no way you can radiate much heat if you're in direct sunlight -- that's why the space shuttle flew upside down in orbit. It kept the heat shield towards the sun, so it had a chance to radiate heat away from the other side.
I doubt that's the main reason why the shuttle flies upside down. The bottom of the shuttle is also black, while the top is white. From a simple light-absorption-radiation point of view, this configuration would lead to heating of the shuttle as a whole. The heat shield is designed to shield from heat conduction due to superheated compressed air in contact with the shuttle during reentry. Shielding from radiative heating makes use of reflective surfaces like what satellites are coated in.
It seems the shuttle would fly upside down to aid in radio communication with the earth, allow viewing of the earth through the windows (a human concern, but still an important one), and to protect the shuttle from earthbound debris (though I'd think the heat shield is the last thing you'd want to damage before attempting reentry).
Volumetric flasks make the best shivs. That was the subject of my thesis.
It got harder for them, because now they have to do the basic research themselves.
So they built a machine that ensures that all wealth flows to, and stays with, them and now they're bitching that they have to pay to keep it running? The winners in this system aren't the lower classes.
GP didn't say it was absolutely impossible. She (assuming she, with a nickname like Electronic Bra) said that using current technology and knowhow, high sub-light speed travel is energetically infeasible, and FTL travel has been shown to be impossible with our current understanding of physics and engineering.
No he didn't. He said that there is categorically no chance that we will be visited by aliens because the energy requirement is too high (and FTL is impossible) and nowhere in the universe in all of the time it has been in existence will alien life find a way around those limitations. He wasn't talking about current technology, except to imply that we have reached the summit of technological development and all that's left is dusting in the corners. Our current theoretical framework is complete (even though it clearly isn't), whatever Einstein said is the inviolable word of God (if he didn't leave any explicit exceptions, then all hope on that front is lost), and if we haven't figured out how to do something at this early point in our history then it's infeasible that a hypothetical advanced civilization might accomplish it (even though we can come up with clever theoretical constructs like the Alcubierre drive).
Listen, I understand that FTL is not compatible with current theory. I'm aware of the energy requirements needed for fast interstellar travel. My point is that it is hubris to assume that we have it all figured out and that our theory is adequate to perfectly explain the universe.
As gross as it is to "fall" for a big corp pretending to be indie, I think supporting this film is still a good idea. This is a big studio actually dipping its toes into bittorrent as a distribution method. If this little experiment goes well for them, they may voluntarily enter the 21st century. We could actually benefit from that.
Of course, I wouldn't mind seeing them fail to adapt and die completely, so I'm still a little torn here...
He's not predicting that FTL, etc will be possible. He's saying that you're wrong for declaring it to be absolutely impossible.
Seriously, all of those things he listed would be described as "the sort of 'technology' required is simply magic and can't exist" in the past, yet they came about. The reality is that we don't know what's possible and making sweeping statements like yours is just a sign of hubris and ignorance. You can wrap your mind around the concept that not knowing how something can be possible doesn't mean it's absolutely impossible and making categorical statements like yours only paints you as a fool?
You don't need to go to black powder. Nitrocellulose is incredibly easy to make. The primer would be the most difficult part to make safely and reliably.
A relative of mine had someone break into his home in the middle of the night. He stepped into the hallway with a 12gauge shot gun, saw the intruder in the living room and fired one round into the floor. The intruder ran. The action with the gun was never recorded by police.
Am I the only one here concerned about the floor? The cost of repairing my floor would be greater than the value of anything that could be hauled off by a single burglar.
There's nothing wrong with that. If he owns one gun, a shotgun is the most versatile and a 12 gauge is the most versatile gauge. There are plenty of small game loads available.
When a neutrino impacts a particle in the detector, it creates a cascade of new particles. Since the momentum of the neutrino is conserved in the cascade of particles that can be more easily detected, the direction that the neutrino came from can be determined.
I am apt to point out that a supreme court judge asserted that just because one has enjoyed a living performing a certain service for a time, does not mean that the courts are compelled to ensure their continued profit from that service, nor for the wheels of progress to be halted or reversed. (Paraphrased)
I know Heinlein said that*, but it sounds extremely out of character for a Supreme Court Justice. A quick Google search didn't turn up anything good, which Justice said that?
There has grown up in the minds of certain groups in this country the notion that because a man or corporation has made a profit out of the public for a number of years, the government and the courts are charged with the duty of guaranteeing such profit in the future, even in the face of changing circumstances and contrary to public interest. This strange doctrine is not supported by statute or common law. Neither individuals nor corporations have any right to come into court and ask that the clock of history be stopped, or turned back.
Heinlein, Life-line (1939)
Conversations in a car will never the be the same as a conversation happening with somebody outside the car. People driving with you inadvertently "help" you in a crisis by pausing in their communications during a crisis situation.
Even more than that, an abrupt pause in the conversation from the driver or a loud noise will prompt the person on the other end to ramp up their level of distraction: "OH MY GOD ARE YOU OK?! WHAT'S HAPPENING?! WHY AREN'T YOU TALKING???" and try to compete for your attention at the most crucial moment.
I see where you're coming from, but I want to emphasize that I see being from a poor family with few opportunities for improvement a reason for involvement in crime, but not an excuse for it. I'm not interested in being lenient on criminals because of their upbringing, I'm more interested in fixing the upbringing so that there are fewer criminals. Of course, a real practical solution to this problem is the hard part.
The drug war case is inexcusable on the part of society. Black markets are extremely profitable and even "respectable" bankers like HSBC are involved in them. Legislating a black market into existence is never the correct approach.
You're right that I'm basing my opinion off of a limited sample. My contention is that they are automatically seen as a PhD+, when (in my experience) the PhD portion was just a freebie thrown in to make a more competitive MD program. Academic positions are scarce and very competitive and I'm not excited at the thought of being passed up for one without merit because their PhD+ outranks my PhD.
This was all at a top ranked medical research program, but I'm glad of the news that this isn't true everywhere. I agree that there are certainly more PhDs who deserve their degree less than MD, PhDs, though I'd contend that's just because there are more "just" PhDs.
I'm currently finishing my PhD and have just reached (what I hope) is the bottom of my optimism plot. Perhaps that explains some of the bitterness.