Can any of the rocket surgeons here comment on what it would take to de-orbit such a device?
'Set the controls for the heart of the sun.' -- Pink Floyd
Energy. A lot of it. It is effectively outside the Earth's gravitational well, at the point where the Sun's gravity takes over. You have to decelerate it enough to intersect the atmosphere, at which point drag will bring it done for you. I am not sure of the exact figures, but I think it takes as much energy again to get something from LEO to escape velocity as it takes to get from Earth to LEO. Which is the same as the energy that it takes to get back again. Effectively, I think, You would need another third stage rocket of the size that lifted it from LEO to L2 to get it back again - and you would have had to lift that booster to L2.
And to drop it into the sun would be even more expensive, because you have to loose all the velocity of the earth's orbit around the sun, which a quick calculation suggests is about 70,000 mph (against 25,000 mph for earth's escape velocity).
De-orbiting is really only possible from LEO. Even satellites in geosynchronous orbit are booted to graveyard orbits, not de-orbited.
Not so much a slang word as the proper word,originally. Just about all other names for the human mammary glands are either euphemisms or more recent slang. "Breast" originally meant the cheat in general, and could be (and was) applied to both sexes: "his breast swelled with pride" did not imply an imminent bra purchase.
So where are you going to go when someone sells you a faulty car, or a house with serious faults? That is a private contract. You say you don't want the government to enforce those contracts?
I don't see anything incongruous about someone physically hosting servers but not administering them. More efficient for utsa.edu to locate their servers they use in one of the big boys server farms that to run their own physical installation. But they can perfectly well keep full authority and responsibility for their domain. It should be clear who has responsibility for the domain, but it doesn't have to be the owner of the floorspace the server stands on.
To 1 and 3: almost certainly. To 2: probably not unless it has already "learned" the alternative route.On the other hand, one difference between computers and humans is that you can copy the "learning" from one computer in a way you cannot copy from one brain to another. So it would not strike me as unreasonable for a net-connected car to download the images of a detour route within a few seconds of recognising a roadblock.
One would sincerely hope that it is depending on more than a single point, or single building, fix. It should have at least two or three major reference points in use at any moment, plus more ahead that it is acquiring for future use and more behind that it has passed but have not gone out of sight. I would hope that at any instant it has at least twice as many reference points as it needs.
And if all else fails, just like a human, it should have enough absolute road sense to come smoothly to a halt however unfamiliar the surroundings.
Because the pictures produced by 3-D maps look much less like the real world than the real world. While the 3D map will probably tell you the height and approximate colour of the building, the real world contains ad-hoc signage, discolouration, texture, minor details such as lamps, signs and street furnityre which will be of great assistance in fine location. I would rather a car that was able to drive down the real road that it had driven down before than one which could drive down a computer model of a road whose detail may well not be accurate.
But the original point was to ban the stock market, which enables takeovers. It is not sentimentality that wants to preserve family firms. Without company takeovers, everybody has to be fired, the machinery and premises converted to cash. Banning takeovers is the ultimate anti-capitalism: it bans cashing in your capital gains. It is feudalism: all companies must remain tiny and inefficient.
So nobody can buy out family businesses when the founder retires, so they have to close. And the railway systems and airlines would have to remain fragmented into the hundreds of companies that originally started them. And failing companies would have to go bust and everybody lose their jobs instead of the good bits being sold as going concerns. Ad no Venture Capitalist would fund a startup because they could not sell out when it succeeds, thus killing most of the tech industry.
It/sometimes/ ends in situations as you describe, but a lot of takeovers are very valuable. You are looking at the small percentage that are destructive and ignoring the huge majority that allow industry to change shape in response to circumstances.
The Shuttle, or anything else headed for Low Earth Orbit, does not need 25,000 mph. That is the velocity required to escape completely from the Earth's gravity well, for example to go to Mars. Low Earth Orbit, which is all the Shuttle could reach, is energetically less than half way to free space.
One problem with wanting to shoot this thing down is that it would be coming from a completely different direction from that which you would be watching for attacking aircraft or missiles. Effectively, you would need a complete second set of radars to cover this unexpected direction.
The Chieftain tank has, as probably most other tanks do, sophisticated stabilising system so that the gun stays dead level while the tank hull bucks across the countryside. They found out that the servo systems which do this were wearing out much sooner than inspected. Inquiries found that the gunner was turning the system on all the time so that it stopped spilling his tea, which he put on top of the gun breech. They solved the problem by putting a domed cover on the breech.
Even if you are doing millions of time operations, the only meaningful operations I can think of on absolute times, as opposed to intervals, is addition or subtraction of an interval to a time, and subtraction of one time from another to create an interval. Both of these operations are negligibly slower on a current 32-bit machine, which will probably be much more bound by the extra memory bandwidth needed to fetch the larger structures. 64-bit multiplies and divides give 32-bit machines indigestion. 64-bit adds need two or three fast instructions instead of one. Time calculations don't need the things like matrix multiplies which consume ream mips.
(Caveat: this may not apply to people building time machines. If you have 2-D or higher time, I can see how it could get complicated).
Having a Fields Medal winner leading the charge helps. If you can point out that this is where the greatest in the field are publishing, old faculty will have difficulty in denying their relevance. Those who are "names" in their respective subjects can make this happen.
1. Violent games encourage people to be violent in real life, increasing violence 2. Violent games provide catharsis for those with violent tendencies, decreasing violence.
As far as I know, very little research has been done to test which of these is true. I recall seeing one small experiment that pointed in the direction of 2 - violent games reduce real world violence. Apart from anything else, they may keep the potentially violent off the streets.
These campaigns are run by people who loathe violent games - which they are entitled to - judging players of such games as if they were themselves - which is not reasonable. It "makes sense" to them that violent games cause violence. But, when researched, such things that "everybody knows" quite often turn out to be false.
So these people may be doing more harm than good. Or not. We don't know. So why don't we do the research?
It makes it easy and inexpensive to automate following you around. To follow a single person using the Eyeball Mk1 takes about ten people. To follow them by RFID takes a few inexpensive readers scattered around. You can track students for good reasons - or for bad ones (stalking etc),
Not that I want to take a knee-jerk attitude to this and say it must be banned. But it has unintended consequences, which may not have been thought through.
For example, a stalker could quite easily learn, on campus, what his target's RFID tag is, then build a gadget to report when they enter/leave their off-campus flat.
The problem is getting exactly that number of atoms of C-12. They are actually attempting to do this, but with Silicon because we have, for some reason, developed the ability to grow really large crystals of really pure silicon. These can then be machined into spheres. measured using current quite good length measuring instruments. They are probably not far off being able to replace the standard kilo with a manufacturable (with difficulty) silicon sphere.
If you delete, and need to check it with version control you are adding time, effort and complexity of actions. And then instead of going back to do a cross reference you are going to introduce new bugs that can grow into weeds and cause this cycle of rewriting again.
The opposite of true for me. In my IDE( (Eclipse) is a single select from a drop-down menu for me to get a side-by-side comparison of new and previous, with new editable and old copyable. If I leave commented out old code, it is a scroll-up/scroll-down to compare new and old, which is much harder.
You need tools for the job. Version control is part of it, as has already been mentioned, and version control aware editors another part of it.
They did - in the nineteenth century, when clockwork was the easiest available timing device. But only quietly, so they would be very hard to detect. But I doubt anybody put big red LEDs on electronic devices, ever.
I certainly ANAL, but I can see plenty of weasels round it. You are buying the DVD, but only licensing the software. You have all your consumer rights over the DVD, but just because you can physically transfer the thing you bought, it doesn't mean it has to execute in another machine. The data, as oppose to the physical media, is licensed rather than sold, so you do not have the same rights.
How come HP has to ask the court to determine whether employment contracts were violated?
HP forgot to hire people to read the employment contracts, or what?
HP want the court to order the departed workers to testify on a legally binding basis how they were recruited. It is not the contracts which are in doubt, it who approached who and what was offered by who to who that matters.
My guess will be that if either the GM management approached the workers directly or the workers approached GM management directly, then contracts were violated. But if the workers answered an employment ad on line or in the press, and not aimed at them directly, then contracts may not have been violated. But IANAL, particularly in this area. But facts known only to the departing employees and their new employer would determine whether employment contracts were violated. And HP wants the court to order them to tell as a court deposition, under threat of prosecution for perjury if they are caught lying.
For poop, you need a bowel. Which was not invented until the Cambrian, or just before, about 540 million years ago. So these bacteria pre-date any poop, let alone discovered poop, by getting on for three billion years.
Yes, once upon a time the world was not full of shit. Back then, shit didn't happen.
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Can any of the rocket surgeons here comment on what it would take to de-orbit such a device?
'Set the controls for the heart of the sun.' -- Pink Floyd
Energy. A lot of it. It is effectively outside the Earth's gravitational well, at the point where the Sun's gravity takes over. You have to decelerate it enough to intersect the atmosphere, at which point drag will bring it done for you. I am not sure of the exact figures, but I think it takes as much energy again to get something from LEO to escape velocity as it takes to get from Earth to LEO. Which is the same as the energy that it takes to get back again. Effectively, I think, You would need another third stage rocket of the size that lifted it from LEO to L2 to get it back again - and you would have had to lift that booster to L2.
And to drop it into the sun would be even more expensive, because you have to loose all the velocity of the earth's orbit around the sun, which a quick calculation suggests is about 70,000 mph (against 25,000 mph for earth's escape velocity).
De-orbiting is really only possible from LEO. Even satellites in geosynchronous orbit are booted to graveyard orbits, not de-orbited.
Not so much a slang word as the proper word,originally. Just about all other names for the human mammary glands are either euphemisms or more recent slang. "Breast" originally meant the cheat in general, and could be (and was) applied to both sexes: "his breast swelled with pride" did not imply an imminent bra purchase.
So where are you going to go when someone sells you a faulty car, or a house with serious faults? That is a private contract. You say you don't want the government to enforce those contracts?
I don't see anything incongruous about someone physically hosting servers but not administering them. More efficient for utsa.edu to locate their servers they use in one of the big boys server farms that to run their own physical installation. But they can perfectly well keep full authority and responsibility for their domain. It should be clear who has responsibility for the domain, but it doesn't have to be the owner of the floorspace the server stands on.
As Kruschev told Nixon, it is a waste to have two teams of designers for washing machines.
To 1 and 3: almost certainly. To 2: probably not unless it has already "learned" the alternative route.On the other hand, one difference between computers and humans is that you can copy the "learning" from one computer in a way you cannot copy from one brain to another. So it would not strike me as unreasonable for a net-connected car to download the images of a detour route within a few seconds of recognising a roadblock.
One would sincerely hope that it is depending on more than a single point, or single building, fix. It should have at least two or three major reference points in use at any moment, plus more ahead that it is acquiring for future use and more behind that it has passed but have not gone out of sight. I would hope that at any instant it has at least twice as many reference points as it needs.
And if all else fails, just like a human, it should have enough absolute road sense to come smoothly to a halt however unfamiliar the surroundings.
Because the pictures produced by 3-D maps look much less like the real world than the real world. While the 3D map will probably tell you the height and approximate colour of the building, the real world contains ad-hoc signage, discolouration, texture, minor details such as lamps, signs and street furnityre which will be of great assistance in fine location. I would rather a car that was able to drive down the real road that it had driven down before than one which could drive down a computer model of a road whose detail may well not be accurate.
But the original point was to ban the stock market, which enables takeovers. It is not sentimentality that wants to preserve family firms. Without company takeovers, everybody has to be fired, the machinery and premises converted to cash. Banning takeovers is the ultimate anti-capitalism: it bans cashing in your capital gains. It is feudalism: all companies must remain tiny and inefficient.
So nobody can buy out family businesses when the founder retires, so they have to close. And the railway systems and airlines would have to remain fragmented into the hundreds of companies that originally started them. And failing companies would have to go bust and everybody lose their jobs instead of the good bits being sold as going concerns. Ad no Venture Capitalist would fund a startup because they could not sell out when it succeeds, thus killing most of the tech industry.
It /sometimes/ ends in situations as you describe, but a lot of takeovers are very valuable. You are looking at the small percentage that are destructive and ignoring the huge majority that allow industry to change shape in response to circumstances.
The Shuttle, or anything else headed for Low Earth Orbit, does not need 25,000 mph. That is the velocity required to escape completely from the Earth's gravity well, for example to go to Mars. Low Earth Orbit, which is all the Shuttle could reach, is energetically less than half way to free space.
One problem with wanting to shoot this thing down is that it would be coming from a completely different direction from that which you would be watching for attacking aircraft or missiles. Effectively, you would need a complete second set of radars to cover this unexpected direction.
That is the gross for a ten year contract, with support and repairs.
The Chieftain tank has, as probably most other tanks do, sophisticated stabilising system so that the gun stays dead level while the tank hull bucks across the countryside. They found out that the servo systems which do this were wearing out much sooner than inspected. Inquiries found that the gunner was turning the system on all the time so that it stopped spilling his tea, which he put on top of the gun breech. They solved the problem by putting a domed cover on the breech.
Even if you are doing millions of time operations, the only meaningful operations I can think of on absolute times, as opposed to intervals, is addition or subtraction of an interval to a time, and subtraction of one time from another to create an interval. Both of these operations are negligibly slower on a current 32-bit machine, which will probably be much more bound by the extra memory bandwidth needed to fetch the larger structures. 64-bit multiplies and divides give 32-bit machines indigestion. 64-bit adds need two or three fast instructions instead of one. Time calculations don't need the things like matrix multiplies which consume ream mips.
(Caveat: this may not apply to people building time machines. If you have 2-D or higher time, I can see how it could get complicated).
Having a Fields Medal winner leading the charge helps. If you can point out that this is where the greatest in the field are publishing, old faculty will have difficulty in denying their relevance. Those who are "names" in their respective subjects can make this happen.
There are two possible theories:
1. Violent games encourage people to be violent in real life, increasing violence
2. Violent games provide catharsis for those with violent tendencies, decreasing violence.
As far as I know, very little research has been done to test which of these is true. I recall seeing one small experiment that pointed in the direction of 2 - violent games reduce real world violence. Apart from anything else, they may keep the potentially violent off the streets.
These campaigns are run by people who loathe violent games - which they are entitled to - judging players of such games as if they were themselves - which is not reasonable. It "makes sense" to them that violent games cause violence. But, when researched, such things that "everybody knows" quite often turn out to be false.
So these people may be doing more harm than good. Or not. We don't know. So why don't we do the research?
Russia used to have a simple system: a "None of the Above" box. If it wins, the election is rerun with a fresh slate.
It makes it easy and inexpensive to automate following you around. To follow a single person using the Eyeball Mk1 takes about ten people. To follow them by RFID takes a few inexpensive readers scattered around. You can track students for good reasons - or for bad ones (stalking etc),
Not that I want to take a knee-jerk attitude to this and say it must be banned. But it has unintended consequences, which may not have been thought through.
For example, a stalker could quite easily learn, on campus, what his target's RFID tag is, then build a gadget to report when they enter/leave their off-campus flat.
The problem is getting exactly that number of atoms of C-12. They are actually attempting to do this, but with Silicon because we have, for some reason, developed the ability to grow really large crystals of really pure silicon. These can then be machined into spheres. measured using current quite good length measuring instruments. They are probably not far off being able to replace the standard kilo with a manufacturable (with difficulty) silicon sphere.
If you delete, and need to check it with version control you are adding time, effort and complexity of actions. And then instead of going back to do a cross reference you are going to introduce new bugs that can grow into weeds and cause this cycle of rewriting again.
The opposite of true for me. In my IDE( (Eclipse) is a single select from a drop-down menu for me to get a side-by-side comparison of new and previous, with new editable and old copyable. If I leave commented out old code, it is a scroll-up/scroll-down to compare new and old, which is much harder.
You need tools for the job. Version control is part of it, as has already been mentioned, and version control aware editors another part of it.
They did - in the nineteenth century, when clockwork was the easiest available timing device. But only quietly, so they would be very hard to detect. But I doubt anybody put big red LEDs on electronic devices, ever.
I certainly ANAL, but I can see plenty of weasels round it. You are buying the DVD, but only licensing the software. You have all your consumer rights over the DVD, but just because you can physically transfer the thing you bought, it doesn't mean it has to execute in another machine. The data, as oppose to the physical media, is licensed rather than sold, so you do not have the same rights.
How come HP has to ask the court to determine whether employment contracts were violated?
HP forgot to hire people to read the employment contracts, or what?
HP want the court to order the departed workers to testify on a legally binding basis how they were recruited. It is not the contracts which are in doubt, it who approached who and what was offered by who to who that matters.
My guess will be that if either the GM management approached the workers directly or the workers approached GM management directly, then contracts were violated. But if the workers answered an employment ad on line or in the press, and not aimed at them directly, then contracts may not have been violated. But IANAL, particularly in this area. But facts known only to the departing employees and their new employer would determine whether employment contracts were violated. And HP wants the court to order them to tell as a court deposition, under threat of prosecution for perjury if they are caught lying.
For poop, you need a bowel. Which was not invented until the Cambrian, or just before, about 540 million years ago. So these bacteria pre-date any poop, let alone discovered poop, by getting on for three billion years.
Yes, once upon a time the world was not full of shit. Back then, shit didn't happen.
No shit, Sherlock.