Of course the reverse is also true, if alice looked back at bob she'd see him all sped up like keystone cops.
Are you sure? Certainly an observer at rest in the same place outside the horizon (let's call him Rob) would see Bob the more blue-shifted the closer he's to the horizon. However the closer he's to the horizon, the higher Alice's speed relative to him would be when she passes him, and since that speed is away from Bob, her view of Bob would be increasingly red-shifted relative to Rob's view. My intuition (which of course may be wrong) is that this should just cancel the gravitational blue-shift experienced by Rob, so that Alice would see Bob basically at original speed.
I have no idea what you speak of, but I guess AdBlock Plus and RequestPolicy would each get rid of it. Possibly NoScript would suffice, too. (I run all three, and that certainly is enough to not make me see it).
Of course having a key of all zeroes is a bad mistake. That's why I always go away from that mistake as far as possible, by using a key which has no zero altogether. That is, a key of all ones. Clearly as opposite of the most insecure key, that's the most secure one.;-)
OK, let's say you can get each bit right with 51% probability (rather than 50% as with guessing). Now what do you think is the probability to recover even a single bit from an encrypted file?
Not that I think you'd get even those 51%. Note that you not only have to detect that it was once at that value, you have to detect that it is the value it had exactly 50 rewrites ago, not 49, not 51 (the sector might previously have held other data), but exactly 50 rewrites.
You may convince me that it works for one, two or even three rewrites. But never with 50.
Well, given that it was the Guardian destroying the computers under oversight of GCHQ, and they knew it was filmed, I can imagine them fulfilling the order ridiculously to the letter, to make the stupidity of it obvious without the GCHQ being able to complain.
You misunderstood. Yes, they were using quantum mechanics, but in a different way: They triggered a doomsday device which would destroy the earth in case any copy of the documents still existed, thus effectively performing a global quantum suicide. By doing so, they ensured that all documents were destroyed.
You can overwrite the drive 50 times and you can not be certain that the data is unrecoverable.
If you can recover the data overwritten 50 times, then you also can recover the data overwritten 49 times (that is, the first set of data you've overwritten the original data with), the data overwritten 48 times (that is, the second set of data you've overwritten it with), the data overwritten 47 times, the data overwritten 46 times... and you'd have to be able to distinguish between them. which means that on a 500 gigabyte hard disk, you'd be able to recover 25 terabytes of data. I strongly doubt that this is possible.
In the middle ages, you couldn't just cope if things went nastily wrong on a ship either, if you were far away from land and common routes. You couldn't just send an SOS over radio, after all.
Well, at the end of the ice age, it was getting warmer. But the Neanderthals simply denied that it got warmer, and therefore claimed that expensive adapting would not be necessary. After all, as long as they could think they had hunted mammoths, so why should they now invest time to find other sources of food? All those warnings about global warming were clearly nonsense. And anyway, last winter was pretty cold, so doesn't that disprove global warming?
When they could not deny any longer that it was getting warmer, it was too late.
"Caucasian" is actually the word for someone living or coming from the Caucasus. Which is a terribly wrong name for most white people who neither themselves nor their ancestors have ever been even near the Caucasus. I'm not even sure it's used anywhere outside America. And in America it's only because someone decided that saying "white" is somehow bad, but using an inappropriate word to essentially say the same is not, for whatever reason.
See, that's not really a test of intelligence, it's a test of knowledge
So are the usual IQ tests. They test for example mathematical knowledge (do you know enough formulas to find one to extend that series of numbers?) and language/world knowledge (which of the words doesn't fit to the others?)
MS can't even make their own products backwards/forwards-compatible without subtle formatting or processing bugs creeping in
That may be because their own formats are a mess.
People who need to work with government will resort to doing their work in MS products then copying the outputs into LibreOffice, or using PDFs, or other equally time-wasting strategies.
If the result is using more PDF (a format meant for finished documents) instead of DOC or ODF (formats meant for working on documents), I'd say it's a win. Think only of how much information it unintentionally leaked in document histories.
Anyway, with modern MS Office, I cannot imagine anyone using it if they don't need to. I mean, who would want to use an interface where thanks to the oversized controls the amount of his text that fits on the screen is less than on a 70's terminal?
The research was funded by the no-limit hunting lobby. "Unrestricted hunting doesn't wipe out entire animal populations - climate (and legislative) change do!"
In that case, I wonder why we put so much effort in fighting pathogenic germs. We should just outlaw them, and they'll disappear!
The realistic (as in, "this is what will happen") alternative to patents is trade secrets.
So currently there are no trade secrets?
If a company believes it can keep the invention secret for the time the patent protection lasts, and nobody will independently discover it during that time, then it will certainly not patent it. So the patent will in general only tell you what would have known anyway at the time when the patent ends.
Slashdot Mirror
Are you sure? Certainly an observer at rest in the same place outside the horizon (let's call him Rob) would see Bob the more blue-shifted the closer he's to the horizon. However the closer he's to the horizon, the higher Alice's speed relative to him would be when she passes him, and since that speed is away from Bob, her view of Bob would be increasingly red-shifted relative to Rob's view. My intuition (which of course may be wrong) is that this should just cancel the gravitational blue-shift experienced by Rob, so that Alice would see Bob basically at original speed.
I have no idea what you speak of, but I guess AdBlock Plus and RequestPolicy would each get rid of it. Possibly NoScript would suffice, too. (I run all three, and that certainly is enough to not make me see it).
Those who will see your comment are not those why may need reminding. It's not the readers of Slashdot who give you the beta interface.
Of course having a key of all zeroes is a bad mistake. That's why I always go away from that mistake as far as possible, by using a key which has no zero altogether. That is, a key of all ones. Clearly as opposite of the most insecure key, that's the most secure one. ;-)
Why? Just hold a burning match on the paper and let the fire do its work. It will spread to all the documents, for sure.
And also it might have reminded some of the journalist handling such data of the importance of backups.
OK, let's say you can get each bit right with 51% probability (rather than 50% as with guessing). Now what do you think is the probability to recover even a single bit from an encrypted file?
Not that I think you'd get even those 51%. Note that you not only have to detect that it was once at that value, you have to detect that it is the value it had exactly 50 rewrites ago, not 49, not 51 (the sector might previously have held other data), but exactly 50 rewrites.
You may convince me that it works for one, two or even three rewrites. But never with 50.
Well, given that it was the Guardian destroying the computers under oversight of GCHQ, and they knew it was filmed, I can imagine them fulfilling the order ridiculously to the letter, to make the stupidity of it obvious without the GCHQ being able to complain.
Actually modern monitors contain small computers. Or what did you think creates those on-screen menus and handles digital input?
And I could also imagine someone hiding a Raspberry Pi inside some large old CRT ...
You could in principle re-flash the BIOS to hold small amounts of confidential data (or more likely, decryption keys for confidential data).
You misunderstood. Yes, they were using quantum mechanics, but in a different way: They triggered a doomsday device which would destroy the earth in case any copy of the documents still existed, thus effectively performing a global quantum suicide. By doing so, they ensured that all documents were destroyed.
If you can recover the data overwritten 50 times, then you also can recover the data overwritten 49 times (that is, the first set of data you've overwritten the original data with), the data overwritten 48 times (that is, the second set of data you've overwritten it with), the data overwritten 47 times, the data overwritten 46 times ... and you'd have to be able to distinguish between them. which means that on a 500 gigabyte hard disk, you'd be able to recover 25 terabytes of data. I strongly doubt that this is possible.
But if your train is driverless, a driver's strike would have no effect, would it?
Please look at the post I replied to. Hint: It was not yours.
In the middle ages, you couldn't just cope if things went nastily wrong on a ship either, if you were far away from land and common routes. You couldn't just send an SOS over radio, after all.
Well, at the end of the ice age, it was getting warmer. But the Neanderthals simply denied that it got warmer, and therefore claimed that expensive adapting would not be necessary. After all, as long as they could think they had hunted mammoths, so why should they now invest time to find other sources of food? All those warnings about global warming were clearly nonsense. And anyway, last winter was pretty cold, so doesn't that disprove global warming?
When they could not deny any longer that it was getting warmer, it was too late.
"Caucasian" is actually the word for someone living or coming from the Caucasus. Which is a terribly wrong name for most white people who neither themselves nor their ancestors have ever been even near the Caucasus. I'm not even sure it's used anywhere outside America. And in America it's only because someone decided that saying "white" is somehow bad, but using an inappropriate word to essentially say the same is not, for whatever reason.
So are the usual IQ tests. They test for example mathematical knowledge (do you know enough formulas to find one to extend that series of numbers?) and language/world knowledge (which of the words doesn't fit to the others?)
Since we are pimates, we share 100% of our genome with primates.
That may be because their own formats are a mess.
If the result is using more PDF (a format meant for finished documents) instead of DOC or ODF (formats meant for working on documents), I'd say it's a win. Think only of how much information it unintentionally leaked in document histories.
Anyway, with modern MS Office, I cannot imagine anyone using it if they don't need to. I mean, who would want to use an interface where thanks to the oversized controls the amount of his text that fits on the screen is less than on a 70's terminal?
The research was funded by the no-limit hunting lobby. "Unrestricted hunting doesn't wipe out entire animal populations - climate (and legislative) change do!"
In that case, I wonder why we put so much effort in fighting pathogenic germs. We should just outlaw them, and they'll disappear!
This is Slashdot. Did anyone not read "Breasts"?
So currently there are no trade secrets?
If a company believes it can keep the invention secret for the time the patent protection lasts, and nobody will independently discover it during that time, then it will certainly not patent it. So the patent will in general only tell you what would have known anyway at the time when the patent ends.
You ruin your reader every day?
The publishers change their format every day?
Thank you.