I would beg to differ. The package management is just as good if not better than what's available in Linuxland,
I am not sure I agree. I use netbsd and ubuntu. I can see the benefits in the debian approach of being able to upgrade the whole system through packages. With openbsd and netbsd you have to run current for that which means the user has to do a lot of integration work to stay up to date.
I don't think that there are many people out there that would claim that OpenBSD is comfortable to use and would make a good desktop system.
Depends on what you mean by a desktop. I run ubuntu on my laptops but I have an amd64 machine running netbsd for serious work. I use it for network administration and software development. The environment is simple: X11, fvwm, aterm and applications like firefox and nedit. Its not gnome, but for some purposes it is much better. I haven't used openbsd at all but I am pretty sure it would be similar on the same hardware.
Apple may see an advantage in being able to build small bits of custom hardware. The supposed DRM chip on the new shuffle is an example which comes to mind. It also occured to me that they want to employ chip designers to improve their interface with existing suppliers. It might help them write better specifications and to understand hardware requirements.
People don't typically have files full of true random numbers floating around anyway. I could generate a nice near random screen background. When the cops say that must be encryption because its not random I just say its an image and it wasn't meant to be random in the first place.
Yes I can see that your argument might work as a gravitational slingshot. The way I visualise it is that the time you spend on certain trajectories in a gravitational field can determine the amount of energy you transfer through the field. A helicopter hovering above the ground will use an infinite amount of energy in an infinite time. A satellite can orbit the Earth for an infinite time for zero energy cost. If I fall towards jupiter and fire an engine at accelerate at closest approach I will spend less time in Jupiters gravitational field on the way out. Jupiter will have tugged me more one way than the other during the encounter so kinetic energy and momentum have been transferred through the gravitational field.
Now looking at your scenario of passing through a galaxy, I could think of it as passing 10 stars. Once I pass the first star its gravitational field will start to reduce my acceleration. Once in the middle my velocity will be lower than it would have been if I had been passing a point source. This gives more time for me to interact with the remaining five stars on the way out, so more of my momentum will be transferred to them than was transferred to me on the way in.
Why would the stars and black hole change their trajectory significantly?
Gravity?
Gravity can change the direction of travel of a black hole or star. It can't significantly change momentum unless the object passes very close to a large mass. Our space probes do that at Jupiter, etc, but that requires guidance or an extreme amount of luck. To be captured by gravitational slingshot a black hole would have to pass very close to our own central black hole. Thats not very likely.
since the gravitation force is ~M_blackhole*M_milkyway
and F_bh=m_bh*a
i dont think the trajectorie is dependent on the mass of the particle in the first order as long as m_bhm_milkyway
No but the velocity change caused by drag depends on the density of the object. Stars and black holes won't experience significant drag. Gas cloud molecules will. When they hit another cloud gas will be compressed in a shock wave and new stars will form.
The Milky Way swallows a galaxy, and the swallowed galaxy's stars get added to the milky way, orbiting the galactic centre in the usual way. Presumably the same happens to the black hole - there's no reason why it should be sucked into the middle. Black holes will happily orbit around each other, as long as they're outside each other's event horizons.
Why would the stars and black hole change their trajectory significantly? They are passing through a near perfect vacuum. I could believe that a galaxy from the halo of our galaxy could pass through our galactic disc and lose all its gas clouds, but the black hole would keep right on going.
What makes you think the black hole would have a trajectory any different from any of the stars from the captured galaxy? Because it's marginally heavier than the other stars?
I think the black hole and stars from the captured galaxy will not change their trajectory when they enter our galaxy. Gas clouds will change their trajectory because they are big and diffuse. The galaxy will appear to be captured because the bright stars inside it will burn out and no more will be born with the original trajectory because the gas clouds have gone.
Scenario. The Milky Way swallows a galaxy, and by extension, all the stars around the central black hole. Yet, the same gravity that causes the stars to amalgamate completely misses the biggest mass in that swallowed galaxy? Why would that make sense?
The only bit which I think is strange is that the black hole from the swallowed galaxy hangs around in our galaxy. It should have enough velocity to pass right through our galaxy and never come back. Most likely the captured stars would die of old age before they passed though our galaxy. Only red dwarfs would keep going because of their long life. Gas clouds in the captured galaxy would interact with our gas clouds. I think that is the only component which would really get captured.
I wonder if black holes could account for either of these things? Gamma rays would be released if a large mass hits a black hole. A cosmic ray could be accelerated if it passes too close to a black hole.
Re:Also don't forget Debian!
on
NetBSD 5.0 Released
·
· Score: 2, Insightful
No I am talking about netbsd in the context of debian. You can upgrade a debian system entirely with dpkg. You can not upgrade a netbsd system entirely with pkg tools. I am suggesting that netbsd make it possible to do that. All the tools exist, its just a matter of how they are used.
Re:7 million new lines of code?
on
NetBSD 5.0 Released
·
· Score: 4, Informative
No its seven million lines in the patch. Many of them will be changed or removed line of code.
In the Apollo and Mercury programs the Launch Escape System had to be able to lift the capsule high enough to deploy parachutes to make a soft landing. Take out the parachutes and the LES doesn't need to be so beefy. In fact it can use the same thrusters which are used for landing. This is a pretty good idea.
You ring lots of people on the pretence that you want their opinion. Then you ask leading questions like Would you vote for candidate X even though he has voted for higher taxes in your city, or some such. The idea is to promote an idea about candidate X, not to find out where the votes are going.
Look at it a different way: why shouldn't people be allowed to build their own network if they want to? If they donate their time are they stealing from a big, for profit firm?
The article implies that the city made a profit on their network, so subsidies didn't come into it.
I'm also intrigued by the fact that these specimens were found in Colorado/New Mexico, which is pretty darn close to the best impact site candidate. I'd expect any animals that survived to be much further away.
I suppose its possible that they migrated there from further away. I wonder if the impact created opportunities for animals further away to move towards the impact site, similar to the way floods can improve the fertility of soil.
I would like to buy a device (say an ethernet card) and install the driver which comes with it. I don't trust the driver so I only want to give it access to the physical device and the data which goes through it. In linux I have to give that driver the same privileges as the kernel. That is dangerous and dumb.
Are you old enough to remember when Radio Shack actually sold electronic components?!?!
Its called Tandy here in Australia. I used to buy some stuff there like crystals for my CB radio and batteries. Mostly because they had stores in convenient locations. There were better shops for electronics but you had to travel further.
Elments which are unique to a realm need to stay there IMO. The only things which can be portable are things which are common to all environments. That may just come down to some information about identity and presentation.
Hahaha. I'm completely new to this debate (yeah, I know - what a n00b !). Has Tanenbaum ever withdrawn his arguments in the light of experience ? Has he ever thrown up his hands and said "You know, I was just plain wrong. Mea culpa." ?
Anyone who remembers the climate in microcomputers at that time can kind of appreciate where he was coming from but the landscape has changed so much (if you'll allow me a little metaphor-mixing) since then that most of his points have either been soundly refuted or shown to be overly cautious/conservative.
Since the landscape has changed AST can hardly be said to have been wrong at the time. But anyway the landscape is changing towards lightweight embedded systems. Linux is a better fit in that environment than Vista, but a smaller, more modular kernel would be an even better fit.
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I would beg to differ. The package management is just as good if not better than what's available in Linuxland,
I am not sure I agree. I use netbsd and ubuntu. I can see the benefits in the debian approach of being able to upgrade the whole system through packages. With openbsd and netbsd you have to run current for that which means the user has to do a lot of integration work to stay up to date.
I don't think that there are many people out there that would claim that OpenBSD is comfortable to use and would make a good desktop system.
Depends on what you mean by a desktop. I run ubuntu on my laptops but I have an amd64 machine running netbsd for serious work. I use it for network administration and software development. The environment is simple: X11, fvwm, aterm and applications like firefox and nedit. Its not gnome, but for some purposes it is much better. I haven't used openbsd at all but I am pretty sure it would be similar on the same hardware.
Apple may see an advantage in being able to build small bits of custom hardware. The supposed DRM chip on the new shuffle is an example which comes to mind. It also occured to me that they want to employ chip designers to improve their interface with existing suppliers. It might help them write better specifications and to understand hardware requirements.
People don't typically have files full of true random numbers floating around anyway. I could generate a nice near random screen background. When the cops say that must be encryption because its not random I just say its an image and it wasn't meant to be random in the first place.
Yes I can see that your argument might work as a gravitational slingshot. The way I visualise it is that the time you spend on certain trajectories in a gravitational field can determine the amount of energy you transfer through the field. A helicopter hovering above the ground will use an infinite amount of energy in an infinite time. A satellite can orbit the Earth for an infinite time for zero energy cost. If I fall towards jupiter and fire an engine at accelerate at closest approach I will spend less time in Jupiters gravitational field on the way out. Jupiter will have tugged me more one way than the other during the encounter so kinetic energy and momentum have been transferred through the gravitational field.
Now looking at your scenario of passing through a galaxy, I could think of it as passing 10 stars. Once I pass the first star its gravitational field will start to reduce my acceleration. Once in the middle my velocity will be lower than it would have been if I had been passing a point source. This gives more time for me to interact with the remaining five stars on the way out, so more of my momentum will be transferred to them than was transferred to me on the way in.
So yes, I see your point.
Anybody want to bid?
For gods sake don't let them go. You could feed Osama Bin Laden into them a bit at a time and power a small city.
Why would the stars and black hole change their trajectory significantly?
Gravity?
Gravity can change the direction of travel of a black hole or star. It can't significantly change momentum unless the object passes very close to a large mass. Our space probes do that at Jupiter, etc, but that requires guidance or an extreme amount of luck. To be captured by gravitational slingshot a black hole would have to pass very close to our own central black hole. Thats not very likely.
since the gravitation force is ~M_blackhole*M_milkyway and F_bh=m_bh*a i dont think the trajectorie is dependent on the mass of the particle in the first order as long as m_bhm_milkyway
No but the velocity change caused by drag depends on the density of the object. Stars and black holes won't experience significant drag. Gas cloud molecules will. When they hit another cloud gas will be compressed in a shock wave and new stars will form.
The Milky Way swallows a galaxy, and the swallowed galaxy's stars get added to the milky way, orbiting the galactic centre in the usual way. Presumably the same happens to the black hole - there's no reason why it should be sucked into the middle. Black holes will happily orbit around each other, as long as they're outside each other's event horizons.
Why would the stars and black hole change their trajectory significantly? They are passing through a near perfect vacuum. I could believe that a galaxy from the halo of our galaxy could pass through our galactic disc and lose all its gas clouds, but the black hole would keep right on going.
What makes you think the black hole would have a trajectory any different from any of the stars from the captured galaxy? Because it's marginally heavier than the other stars?
I think the black hole and stars from the captured galaxy will not change their trajectory when they enter our galaxy. Gas clouds will change their trajectory because they are big and diffuse. The galaxy will appear to be captured because the bright stars inside it will burn out and no more will be born with the original trajectory because the gas clouds have gone.
Scenario. The Milky Way swallows a galaxy, and by extension, all the stars around the central black hole. Yet, the same gravity that causes the stars to amalgamate completely misses the biggest mass in that swallowed galaxy? Why would that make sense?
The only bit which I think is strange is that the black hole from the swallowed galaxy hangs around in our galaxy. It should have enough velocity to pass right through our galaxy and never come back. Most likely the captured stars would die of old age before they passed though our galaxy. Only red dwarfs would keep going because of their long life. Gas clouds in the captured galaxy would interact with our gas clouds. I think that is the only component which would really get captured.
I wonder if black holes could account for either of these things? Gamma rays would be released if a large mass hits a black hole. A cosmic ray could be accelerated if it passes too close to a black hole.
No I am talking about netbsd in the context of debian. You can upgrade a debian system entirely with dpkg. You can not upgrade a netbsd system entirely with pkg tools. I am suggesting that netbsd make it possible to do that. All the tools exist, its just a matter of how they are used.
No its seven million lines in the patch. Many of them will be changed or removed line of code.
It would be nice if I could upgrade the core system with pkg tools, as opposed to reinstalling or compiling from source.
In the Apollo and Mercury programs the Launch Escape System had to be able to lift the capsule high enough to deploy parachutes to make a soft landing. Take out the parachutes and the LES doesn't need to be so beefy. In fact it can use the same thrusters which are used for landing. This is a pretty good idea.
You ring lots of people on the pretence that you want their opinion. Then you ask leading questions like Would you vote for candidate X even though he has voted for higher taxes in your city, or some such. The idea is to promote an idea about candidate X, not to find out where the votes are going.
It is a very popular political tool.
Look at it a different way: why shouldn't people be allowed to build their own network if they want to? If they donate their time are they stealing from a big, for profit firm?
The article implies that the city made a profit on their network, so subsidies didn't come into it.
I'm also intrigued by the fact that these specimens were found in Colorado/New Mexico, which is pretty darn close to the best impact site candidate. I'd expect any animals that survived to be much further away.
I suppose its possible that they migrated there from further away. I wonder if the impact created opportunities for animals further away to move towards the impact site, similar to the way floods can improve the fertility of soil.
I am curious to find out which country you live in. It must be somewhere close to here (aus) because you mentioned Westpac et al.
I would like to buy a device (say an ethernet card) and install the driver which comes with it. I don't trust the driver so I only want to give it access to the physical device and the data which goes through it. In linux I have to give that driver the same privileges as the kernel. That is dangerous and dumb.
Are you old enough to remember when Radio Shack actually sold electronic components?!?!
Its called Tandy here in Australia. I used to buy some stuff there like crystals for my CB radio and batteries. Mostly because they had stores in convenient locations. There were better shops for electronics but you had to travel further.
Elments which are unique to a realm need to stay there IMO. The only things which can be portable are things which are common to all environments. That may just come down to some information about identity and presentation.
All you really need for that is a standard API for portable avatars, with a way to hand off between environments.
Hahaha. I'm completely new to this debate (yeah, I know - what a n00b !). Has Tanenbaum ever withdrawn his arguments in the light of experience ? Has he ever thrown up his hands and said "You know, I was just plain wrong. Mea culpa." ?
Anyone who remembers the climate in microcomputers at that time can kind of appreciate where he was coming from but the landscape has changed so much (if you'll allow me a little metaphor-mixing) since then that most of his points have either been soundly refuted or shown to be overly cautious/conservative.
Since the landscape has changed AST can hardly be said to have been wrong at the time. But anyway the landscape is changing towards lightweight embedded systems. Linux is a better fit in that environment than Vista, but a smaller, more modular kernel would be an even better fit.