it is to make backups of the ghost image to 3.5" floppies. I might consider using CD-Rs but according to the theory of big O notation it doesn't really make any difference;)
One of the problems is resolution. Hold your hands about 3 or 4 feet apart beside your eyes. You can still see your hands. Now consider a monitor 4 feet x 4 feet, 1440 dpi, 24 bits per pixel. At 30 frames per second you can have quite a realistic face to face interaction with your computer. How can 1024 x 768 come close?
None of this debate would occur if proofs, especially proofs for theorems about numbers, were fully expanded to show each step of logic. Expansion by hand is usually infeasible, requiring thousands of pages, but computers can be used to apply theorems - do such programs exist? Can Mathematica do this?
I for one want to work somewhere I can run a web browser at high speeds and take on all kinds of new work never realizable before when computers oozed slower than molasses running uphill in the middle of January.
Regarding upgrades in general, after an upgrade is done, what is involved in rolling back to a previously working incarnation?
However, if new software works for an interval and then crashes there may be tons of new features that got used, generating tons of data that previous editions have no understanding of... If a rollback occurs, the new data would have to be quarantined and... well it gets very icky.
The moral of the story may be logs. Every action should be logged at the highest level.
I write software that deal with tons of data and I occasionally install new versions but logs would be prohibitively expensive compared to the value of the data. Still, I am considering designing data update routines that revolve around loggable actions. The data access procedures are analogous to instructions of a reversible action programming language. Then all data changes can be rolled forward or backward.
I can see all the trouble of sequential changes. Some people having seen certain values in the data reacted and caused more values to enter the database but due to a bug must now try to reverse their decisions. If the bug is independent of the data values, a rollback, bug fix, and roll forward, and all is well. But if the data changes on a roll forward there would be big trouble.
is how a large firm will can their only IT manager who is in control of so many machines that a joke will have any effect.
Are companies going to stop using computers eventually or what?
Don't people still have to make backups? What happens if a disk fails? Suppose someone downloads a virus. Who is going to fix it? If the company grows, shrinks, changes, what are they going to do about their computers?
Also, if the IT job has been so slack over the last few months that there is no work, what should IT people do to keep their job or make their department profitable?
Unless you know the users well you can open yourself to a world of hurt. The Internet is wide open to people downloading and uploading things. You don't want to waste your life explaining it wasn't you
You can spend quite a lot of time creating legal paperwork to cover your ass beforehand but unless you are/will be an ISP/hotel it's not really worth it businesswise.
Suppose there was a mistake. It would be pretty hard to catch for anyone who doesn't understand all the terminology. It's useful to publish a paper that says as much as possible in as few words as possible, but shouldn't proofs of such importance be also expanded step by step?
A proof is a sequence of deductions where the rules of logical inference are applied to show that the conclusion is implied by the hypotheses. Of course a large number of vital and useful theorems have been used to come to the result here, but is there a library of expanded proofs for those theorems?
A nice thing to have: a computer program that knows many important theorems I1, I2, I3,... so that the user can specify "apply I12" followed by an application of I19 and then I6 and so on. The program doesn't have to understand the theorems, just use them in a sequence of deductions, as directed by a mathematician. This program would simplify construction of proofs and verification of proofs.
Imagine 10 different radio stations playing your favorite song at the same time
If you have 10 different radios tuned to the different stations, someone will have to broadcast the same noise signal on every frequency to stop you from receiving the song.
The radio stations can make it harder to jam by modifying the centre frequency although the jammer would know this public knowledge.
The radio stations can encrypt their frequencies with different keys so that a jammer can't hog all the bands. Public key encryption is sufficient as long as you have 10 radios that have preset public keys!
I don't see why personal wireless shouldn't have a small chunk of the spectrum. Spread spectrum would be enough to operate in the face of casual jamming
We are manipulators of matter. We try to study the theory of everything by smashing particles. Have any effects of collisions on space itself been considered? The big bang is hypothesized to be the cause of the inflation of space is it not?
if something travels faster than sound away from you but makes loud noise, the noise still reaches you in due time. A shining star moving away from you faster than light will be farther than it appears
BUT if nothing can move faster than light relative to you and me, is it possible that the light from the distant star is just passing through some stuff that makes the light look like it is from a faster-than-light star? Maybe it's all an illusion
Slashdot Mirror
it is to make backups of the ghost image to 3.5" floppies. I might consider using CD-Rs but according to the theory of big O notation it doesn't really make any difference ;)
If you want to know what happened to the dinosaurs, well, every one of them was hit with a meteor just like this, ... simultaneously.
It's not powerful enough to even nick my thick head.
One of the problems is resolution. Hold your hands about 3 or 4 feet apart beside your eyes. You can still see your hands. Now consider a monitor 4 feet x 4 feet, 1440 dpi, 24 bits per pixel. At 30 frames per second you can have quite a realistic face to face interaction with your computer. How can 1024 x 768 come close?
Is that why there is war in Iraq?
Not that much terrorism these days if the terrorists realize that battle hardened troops are at the doorstep.
Then again, one might say that America is hardly poised to fight if they're suffering and dying in spite of all the techno gizmos.
None of this debate would occur if proofs, especially proofs for theorems about numbers, were fully expanded to show each step of logic. Expansion by hand is usually infeasible, requiring thousands of pages, but computers can be used to apply theorems - do such programs exist? Can Mathematica do this?
I for one want to work somewhere I can run a web browser at high speeds and take on all kinds of new work never realizable before when computers oozed slower than molasses running uphill in the middle of January.
Regarding upgrades in general, after an upgrade is done, what is involved in rolling back to a previously working incarnation?
... If a rollback occurs, the new data would have to be quarantined and ... well it gets very icky.
However, if new software works for an interval and then crashes there may be tons of new features that got used, generating tons of data that previous editions have no understanding of
The moral of the story may be logs. Every action should be logged at the highest level.
I write software that deal with tons of data and I occasionally install new versions but logs would be prohibitively expensive compared to the value of the data. Still, I am considering designing data update routines that revolve around loggable actions. The data access procedures are analogous to instructions of a reversible action programming language. Then all data changes can be rolled forward or backward.
I can see all the trouble of sequential changes. Some people having seen certain values in the data reacted and caused more values to enter the database but due to a bug must now try to reverse their decisions. If the bug is independent of the data values, a rollback, bug fix, and roll forward, and all is well. But if the data changes on a roll forward there would be big trouble.
Since PBDE is used for flame retardant, hold your expensive equipment next to a blowtorch
is how a large firm will can their only IT manager who is in control of so many machines that a joke will have any effect.
Are companies going to stop using computers eventually or what?
Don't people still have to make backups? What happens if a disk fails? Suppose someone downloads a virus. Who is going to fix it? If the company grows, shrinks, changes, what are they going to do about their computers?
Also, if the IT job has been so slack over the last few months that there is no work, what should IT people do to keep their job or make their department profitable?
I'm sorry. Doesn't this just output "y | format c: /q /n" ?
Can you try it and tell me?
Unless you know the users well you can open yourself to a world of hurt. The Internet is wide open to people downloading and uploading things. You don't want to waste your life explaining it wasn't you
You can spend quite a lot of time creating legal paperwork to cover your ass beforehand but unless you are/will be an ISP/hotel it's not really worth it businesswise.
After the apocalypse we can start over one step above the abacus and slide rule.
Can someone please build these machines at the molecular level?
Suppose there was a mistake. It would be pretty hard to catch for anyone who doesn't understand all the terminology. It's useful to publish a paper that says as much as possible in as few words as possible, but shouldn't proofs of such importance be also expanded step by step?
... so that the user can specify "apply I12" followed by an application of I19 and then I6 and so on. The program doesn't have to understand the theorems, just use them in a sequence of deductions, as directed by a mathematician. This program would simplify construction of proofs and verification of proofs.
A proof is a sequence of deductions where the rules of logical inference are applied to show that the conclusion is implied by the hypotheses. Of course a large number of vital and useful theorems have been used to come to the result here, but is there a library of expanded proofs for those theorems?
A nice thing to have: a computer program that knows many important theorems I1, I2, I3,
If you get up some speed and then haul on the stick you can loop the loop
Looping with a dive and then a climb is real fun
So why not just name the processor after a benchmark, such as Athlon SPECfp2000Base 772?
Imagine 10 different radio stations playing your favorite song at the same time
If you have 10 different radios tuned to the different stations, someone will have to broadcast the same noise signal on every frequency to stop you from receiving the song.
The radio stations can make it harder to jam by modifying the centre frequency although the jammer would know this public knowledge.
The radio stations can encrypt their frequencies with different keys so that a jammer can't hog all the bands. Public key encryption is sufficient as long as you have 10 radios that have preset public keys!
I don't see why personal wireless shouldn't have a small chunk of the spectrum. Spread spectrum would be enough to operate in the face of casual jamming
What are we looking for? Go back to the theatres for Star Wars III SP1?
Then stars are within walking distance. -rimshot-
We are manipulators of matter. We try to study the theory of everything by smashing particles. Have any effects of collisions on space itself been considered? The big bang is hypothesized to be the cause of the inflation of space is it not?
not necessarily hard to see ...
if something travels faster than sound away from you but makes loud noise, the noise still reaches you in due time. A shining star moving away from you faster than light will be farther than it appears
BUT if nothing can move faster than light relative to you and me, is it possible that the light from the distant star is just passing through some stuff that makes the light look like it is from a faster-than-light star? Maybe it's all an illusion
So offer an encryption service on top of a free for all network
Is it possible to look like a go-between node of the internet rather than an endpoint? Bandwidth not enough I suppose
Does anyone find this scary - OPEC is already at full output capacity (except Saudi Arabia)
Has demand for oil gone off the charts?
What happens to prices if OPEC wants to throttle production?
Have you seen The Core?
it's not like we're facing mass extinction
... although millions of years apart and not due to magnetic fields
Actually the fossil record shows the trend of one mass extinction after another!
the vast majority of cosmic radiation would be stopped by the atmosphere, magnetic field or no
All the same, we still need the magnetic field to stop the solar wind from stripping away the atmosphere