And the fact remains there is a failsafe people forget. Once the earth gets too warm and the seas grow too big... they reflect the solar energy and become.... yes you guessed it ICE.
This is called a feedback effect; specifically, a negative feedback. However, the fact remains that there are many of these feedback effects, and nobody is quite sure whether or not the negative feedbacks will outweight the positives.
An example of a positive feedback? Well, ice is highly reflective. Seawater is not. As the ice melts, the Earth will reflect less sunlight, causing more warming to occur. Another one is that as temperatures rise and sea algae (the largest consumers of CO2 and producers of O2) die off, less CO2 is consumed, producing a greater greenhouse effect
The sad truth is that nobody knows how these feedbacks will even out, and whether or not the positive feedbacks will outstrip the negative ones.
Firstly, let's assume the moon does in fact create tides in the flowing lava. The core of the Earth being farther from the moon than our oceans are, they will be affected less. Additionally, consider the change in the angular mass moment. Since the oceans are farther from the center of mass of the Earth, the oceanic tides will naturally cause a greater slowdown than the ones nearest the core.
The same reason that you have to choose between Microsoft Windows, Mac OS, Linux, and *BSD. The developers all have a different perspective on what defines good software, different project goals, different target audiences, and these differences are irreconcilable for the purposes of a single project.
I have to admit, I fail to see what is so utterly difficult about this concept that causes people to be so blind to the answer, despite the fact that they accept it on faith for everything else: why we have competing cars, fast food restaurants, colas, and so on.
To clarify, one of them usually thinks he's a hot-shot coder and lets all his friends know it. Same goes for all the other positions. Unfortunately, none of them are in any position to realize that it's all bullshit: not only is their opinion of themselves clouded, but they have no clue that their friends are full of shit, too.
Some startups, for instance, say the talent drain has made their own hiring more difficult.
Yeah, this goes in the same bucket with folks who say they only hire the top five percent. NEWS FLASH: everyone can't hire the top five percent. I'd say a good 99.9% of startups wouldn't know a good tech guy if he rewrote the Linux kernel as a Perl one-liner. This is just a scapegoat for the fact that they have no clue how to hire talented people.
Doesn't mean he's wrong; just that there's differing opinions. Got a link to where Tolkien argued this? I'd like to read it, but Googling got me nothing.
Hahahaha. You've never worked in a real software development company, have you? Let me break down the process for you:
1. Code furiously, creating bugs and features. 2. Tar up the development tree, drop it into place for release. 3. Perform steps 1 and 4 in parallell. 4. Fix bug in main development tree. 5. Perform steps 1, 2, 3, and 4 in parallell.
Who needs nukes? Everyone gets this wrong. Everyone except Heinlein, that is. The real tactic is to drop rocks. Large rocks with sufficient momentum to obliterate anything within a ten-mile radius of the impact point.
Doubt you'll check back to read this reply, but for some reason he seems to have neglected to use exponentiation signs. I'll rewrite the whole passage using them.
"One of the consequences of the second law of thermodynamics is that a certain amount of energy is necessary to represent information. To record a single bit by changing the state of a system requires an amount of energy no less than kT, where T is the absolute temperature of the system and k is the Boltzman constant. (Stick with me; the physics lesson is almost over.)
Given that k =1.38*10^(-16) erg/Kelvin, and that the ambient temperature of the universe is 3.2K, an ideal computer running at 3.2K would consume 4.4*10^(-16) ergs every time it set or cleared a bit. To run a computer any colder than the cosmic background radiation would require extra energy to run a heat pump.
Now, the annual energy output of our sun is about 1.21*10^41 ergs. This is enough to power about 2.7*10^56 single bit changes on our ideal computer; enough state changes to put a 187-bit counter through all its values. If we built a Dyson sphere around the sun and captured all of its energy for 32 years, without any loss, we could power a computer to count up to 2^192. Of course, it wouldn't have the energy left over to perform any useful calculations with this counter.
But that's just one star, and a measly one at that. A typical supernova releases something like 10^51 ergs. (About a hundred times as much energy would be released in the form of neutrinos, but let them go for now.) If all of this energy could be channeled into a single orgy of computation, a 219-bit counter could be cycled through all of its states.
These numbers have nothing to do with the technology of the devices; they are the maximums that thermodynamics will allow. And they strongly imply that brute-force attacks against 256-bit keys will be infeasible until computers are built from something other than matter and occupy something other than space.
[ERRATA; The section on "Thermodynamic Limitations" is not quite correct. It requires kT energy to set or clear a single bit because these are irreversible operations. However, complementing a bit is reversible and hence has no minimum required energy. It turns out that it is theoretically possible to do any computation in a reversible manner except for copying out the answer. At this theoretical level, energy requirements for exhaustive cryptanalysis are therefore linear in the key length, not exponential.]"
Also, you claim we know prime numbers bigger than 2^219 - 1, which is true. However, what you fail to realize is that in none of these cases have we ever counted up to that prime number sequentially. Mersenne primes are studied specifically because they can be represented as 2^n - 1, which takes n bit-flip operations in the worst case scenario to represent. Additionally, the Lucas-Lehmer test is an extraordinarily simple (as far as primality checking is concerned) algorithm for determining whether or not a number of this form is prime.
Schneier's argument is indeed correct, in that we will likely never surpass the energy requirements to count all the way up to a number near 2^219 - 1. We can certainly represent that number, but we cannot start at zero and eventually reach it.
Read the OP. "So a hacker just boots the damn thing, jacks USB pen drive in, and gets data."
Now, if we're talking about a machine that's already up and running with a user logged in, and it's simply "locked", this kind of attack will work. But that's not what the OP said.
Um, where would you get a silly idea like that? The hard drive is encrypted against a key that's unlocked via a password. No USB driver hack is going to magically unlock that key.
The lunar L1/L2 are terrific places for a cheap, easy to build space elevator.
Unfortunately, I don't think this is the case. By necessity, any sort of space elevator would need to be in a stable geosynchronous orbit: i.e., orbiting around the Earth at the same rate which the earth spins on its axis.
Best I can tell, this is not the case for Lagrange points. Lagrange points' location is dependent upon the orbit of the smaller body around the larger, so they orbit the larger body at the same rate as the smaller one.
Practically, this means that the Lagrange points orbit the Earth at the same rate the Moon does, which is not the same rate as the rate of Earth's revolution. Long story short, your space elevator would begin wrapping itself around the Earth in very short order.
Debian has no such shortage of manpower. Doing a quick wc -l over the list of Debian developers gets 1,671 people. And that's just the development team, which doesn't include the list of Debian System Administrators (which, admittedly, is much shorter). Debian has enough people for what it does, and the list of contributors continues to grow.
The problem it was experiencing, however, was a shortage of people assigned to the security team, which has apparently now been resolved.
For the purposes of this, do they measure air speed or ground speed? If it's really one of those things considered to be "impossible", could it just have been a heavy head wind?
Slashdot Mirror
I've always wondered. How do settlements like this actually start, if the only reason they currently exist is to a system a levees and pumps?
The fact that you don't know how to spell irritate irates me.
This is called a feedback effect; specifically, a negative feedback. However, the fact remains that there are many of these feedback effects, and nobody is quite sure whether or not the negative feedbacks will outweight the positives.
An example of a positive feedback? Well, ice is highly reflective. Seawater is not. As the ice melts, the Earth will reflect less sunlight, causing more warming to occur. Another one is that as temperatures rise and sea algae (the largest consumers of CO2 and producers of O2) die off, less CO2 is consumed, producing a greater greenhouse effect
The sad truth is that nobody knows how these feedbacks will even out, and whether or not the positive feedbacks will outstrip the negative ones.
Firstly, let's assume the moon does in fact create tides in the flowing lava. The core of the Earth being farther from the moon than our oceans are, they will be affected less. Additionally, consider the change in the angular mass moment. Since the oceans are farther from the center of mass of the Earth, the oceanic tides will naturally cause a greater slowdown than the ones nearest the core.
I D0 nt' th1nk w3 w 4nt t0 g3t sp44mmm333333rs 1nv0olv3d 1n t3a4c h1ng sp34ll1ng
You can type pretty well for a five year old. Needs work on the grammar though.
What a silly perspective. I've never met a carpenter who knew how to use a hammer, but refused to learn screwdrivers, miter saws, and a lathe.
And this would eliminate one of the major competitive advantages that their model of operation permits.
So this pretty much bans any multiplayer game other than Dr. Mario?
The same reason that you have to choose between Microsoft Windows, Mac OS, Linux, and *BSD. The developers all have a different perspective on what defines good software, different project goals, different target audiences, and these differences are irreconcilable for the purposes of a single project.
I have to admit, I fail to see what is so utterly difficult about this concept that causes people to be so blind to the answer, despite the fact that they accept it on faith for everything else: why we have competing cars, fast food restaurants, colas, and so on.
To clarify, one of them usually thinks he's a hot-shot coder and lets all his friends know it. Same goes for all the other positions. Unfortunately, none of them are in any position to realize that it's all bullshit: not only is their opinion of themselves clouded, but they have no clue that their friends are full of shit, too.
Most times, those who create a startup are under delusions as to how talented they are.
Yeah, this goes in the same bucket with folks who say they only hire the top five percent. NEWS FLASH: everyone can't hire the top five percent. I'd say a good 99.9% of startups wouldn't know a good tech guy if he rewrote the Linux kernel as a Perl one-liner. This is just a scapegoat for the fact that they have no clue how to hire talented people.
No kidding. This guy must be a journalist.
Doesn't mean he's wrong; just that there's differing opinions. Got a link to where Tolkien argued this? I'd like to read it, but Googling got me nothing.
Hahahaha. You've never worked in a real software development company, have you? Let me break down the process for you:
1. Code furiously, creating bugs and features.
2. Tar up the development tree, drop it into place for release.
3. Perform steps 1 and 4 in parallell.
4. Fix bug in main development tree.
5. Perform steps 1, 2, 3, and 4 in parallell.
I think that about covers it.
Who needs nukes? Everyone gets this wrong. Everyone except Heinlein, that is. The real tactic is to drop rocks. Large rocks with sufficient momentum to obliterate anything within a ten-mile radius of the impact point.
Oh god, is that the one where the marine has fully-clothed sex with an imp?
Doubt you'll check back to read this reply, but for some reason he seems to have neglected to use exponentiation signs. I'll rewrite the whole passage using them.
Also, you claim we know prime numbers bigger than 2^219 - 1, which is true. However, what you fail to realize is that in none of these cases have we ever counted up to that prime number sequentially. Mersenne primes are studied specifically because they can be represented as 2^n - 1, which takes n bit-flip operations in the worst case scenario to represent. Additionally, the Lucas-Lehmer test is an extraordinarily simple (as far as primality checking is concerned) algorithm for determining whether or not a number of this form is prime.
Schneier's argument is indeed correct, in that we will likely never surpass the energy requirements to count all the way up to a number near 2^219 - 1. We can certainly represent that number, but we cannot start at zero and eventually reach it.
Read the OP. "So a hacker just boots the damn thing, jacks USB pen drive in, and gets data."
Now, if we're talking about a machine that's already up and running with a user logged in, and it's simply "locked", this kind of attack will work. But that's not what the OP said.
Um, where would you get a silly idea like that? The hard drive is encrypted against a key that's unlocked via a password. No USB driver hack is going to magically unlock that key.
Unfortunately, I don't think this is the case. By necessity, any sort of space elevator would need to be in a stable geosynchronous orbit: i.e., orbiting around the Earth at the same rate which the earth spins on its axis.
Best I can tell, this is not the case for Lagrange points. Lagrange points' location is dependent upon the orbit of the smaller body around the larger, so they orbit the larger body at the same rate as the smaller one.
Practically, this means that the Lagrange points orbit the Earth at the same rate the Moon does, which is not the same rate as the rate of Earth's revolution. Long story short, your space elevator would begin wrapping itself around the Earth in very short order.
Debian has no such shortage of manpower. Doing a quick wc -l over the list of Debian developers gets 1,671 people. And that's just the development team, which doesn't include the list of Debian System Administrators (which, admittedly, is much shorter). Debian has enough people for what it does, and the list of contributors continues to grow.
The problem it was experiencing, however, was a shortage of people assigned to the security team, which has apparently now been resolved.
For the purposes of this, do they measure air speed or ground speed? If it's really one of those things considered to be "impossible", could it just have been a heavy head wind?
Zombie dogs are much slower than the normal kind.
You've never played a survival horror game, have you?
.