No carbon dioxide in the atmosphere does not mean no carbon dioxide in our blood. We'd need to wear carbon dioxide scrubbers so as to not emit any carbon dioxide to the atmosphere of course.
Why do you assume I'm speaking of the US? You can safely walk lots of places here, generally on pavement or paths separate from the road, and with street lights at night. Walking at night on an unlit road can be necessary but it is by far the exception where trading a bit of convenience for safety is surely worth it.
Car headlamp design cannot depend on cyclists being brightly lit. Around here perhaps 3/4 of bikes have some kind of light at night, the rest rely on their reflectors and/or luck. Of the ones with actual lighting, a good portion have those silly little button-lights which shine somewhat ok in one specific direction (for a few hours until the battery dies) and are almost invisible from other directions.
It isn't actually hard at all. It is low bandwidth and announces its presence loudly so you know when to listen. I would be surprised if there exists non-VoIP intercontinental links where not all faxes are recorded by at least one intelligence agency. Email is much harder, lots of people do opportunistic encryption between servers so passive listening doesn't work.
Or any situation where roads are not perfect, straight lines. Otherwise, even perfectly aligned but overly bright headlights have many opportunities to create a hazard by blinding oncoming traffic.
Modern headlights follow the turns. Really, we are talking about headlights of the future here. We can expect them to at least have the technology of today available.
Of course you prefer to be seen but not blinded. So do I. However, you need a good bit of light to see a pedestrian in dark clothes without reflectors at 80km/h before you hit them -- or a deer, for that matter. Since attempts at getting pedestrians (and deer) to wear reflectors have not been universally successful and similar attempts at getting drivers to go slower than 80km/h on country roads seem doomed to failure, the only option left is to have enough light on the cars.
Cyclists are all the way over on the other side of the road. It would take a severe misdesign to blind them. Pedestrians rarely wander on unlit streets, and where they do I bet they prefer being blinded and seen by the driver instead of being run over.
They aren't too bright, they're just pointed wrong. Just make automatic adjustment a requirement and the problem goes away. Or require that they automatically dim when following another car. Depending on how they do it, you could even make headlights which light up everything except the already-brightly-lit car in front.
Really, the only problem with the factory-installed lights of high-end cars right now is that in many cases the rear LEDs flicker. This means that when you look away from them for a moment they appear suddenly brightly lit, like the stop lamps. Hopefully the lasers won't have that problem, or at least flicker at 10kHz+.
You could easily have ended up with the undeployable mess that is self-signed IPSEC certificates. Sometimes it is best to be careful what you ask for, you might get it.
Energy density for lithium air is 18.8MJ/kg, if you have to carry the oxygen with you. Twice that at take off if you use atmospheric air. 9MJ/kg including oxygen has been achieved in the lab. Not 43MJ/kg, certainly, but you are lucky to get a third of that energy out with helicopter engines and the engines or turbines are quite heavy.
Yes, the particular electric helicopter from TFA is all fun and games and doesn't have a future. Nothing wrong with a bit of fun and games.
The laws of physics still have room for at least a 10-fold improvement in battery technology compared to current commercially available batteries. Of course this helicopter is a curiosity, it would be a curiosity even if it was powered by a conventional engine! It isn't exactly something you could use for commercial flights.
I would expect to see electric private planes to become popular within 10 years (popular within the small community which has private planes anyway) and perhaps another 10 years before it makes serious inroads among smaller helicopters.
Absolute time only exists when you are in the same frame of reference as the UTC clock. This may seem like a trivial distinction to you, but GPS would work very poorly if we did not compensate for the satellites not being on the "absolute" UTC.
If we colonize other planets on a large scale, that would imply other solar systems. It is completely uninteresting what hour it is in a different solar system when round-trip latency is 9 years.
Yes, am/pm would make a tiny bit of sense if pm meant "add 12 hours". Alas, pm means "add 12 hours except don't do anything if the hour-number is 12" and am means "subtract 12 hours if the hour-number is 12, otherwise don't do anything". Clever.
The protocol does not require the server to answer at all. The server can just send an error response if it gets too many ranges in a request. The protocol designers cannot know how many resources a given server has available. The most they could do was add a specific error response for "too many ranges, resubmit as individual requests".
I don't believe you. See Mandatory File Locking For The Linux Operating System. Even with that, all you have to do is clear the gid bit to kill the "mandatory" lock, and the so-called locks are subject to race conditions.
There are better standards than 10base-T for single pairs of phone wire. VDSL and HomePNA are obvious choices, with VDSL being the obvious choice for an installation like this. I have no idea where you would find 100base-T4 NICs and switches today.
It will take a lot of work to go from having to ask for the basics on Slashdot to implementing a reliable hotel wireless network.
What's your point? You're still comparing a useless product from 2008 with a very useful product from 2011. Strangely enough the useful product has trouble being cheaper than the useless product.
In 2008 you could even get special Chinese drives labeled 64GB with special controllers that only kept the last xx MB you wrote. Those were even cheaper.
Apples other CEO's were AFAIK paid in about the same way. That didn't work.
In a perfectly competitive market, companies which pay too much for their raw materials in the short term go out of business. Since most markets are not perfectly competitive, it is possible to accept a short-term loss for long-term gain. However, it would be difficult to prevent the competitors going for short-term gain from benefiting the long-term planning of the other companies.
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No carbon dioxide in the atmosphere does not mean no carbon dioxide in our blood. We'd need to wear carbon dioxide scrubbers so as to not emit any carbon dioxide to the atmosphere of course.
Why do you assume I'm speaking of the US? You can safely walk lots of places here, generally on pavement or paths separate from the road, and with street lights at night. Walking at night on an unlit road can be necessary but it is by far the exception where trading a bit of convenience for safety is surely worth it.
Car headlamp design cannot depend on cyclists being brightly lit. Around here perhaps 3/4 of bikes have some kind of light at night, the rest rely on their reflectors and/or luck. Of the ones with actual lighting, a good portion have those silly little button-lights which shine somewhat ok in one specific direction (for a few hours until the battery dies) and are almost invisible from other directions.
Well, it's harder to tap alright.
It isn't actually hard at all. It is low bandwidth and announces its presence loudly so you know when to listen. I would be surprised if there exists non-VoIP intercontinental links where not all faxes are recorded by at least one intelligence agency. Email is much harder, lots of people do opportunistic encryption between servers so passive listening doesn't work.
Or any situation where roads are not perfect, straight lines. Otherwise, even perfectly aligned but overly bright headlights have many opportunities to create a hazard by blinding oncoming traffic.
Modern headlights follow the turns. Really, we are talking about headlights of the future here. We can expect them to at least have the technology of today available.
No, they are supposed to stop on the right side, wait for a break in traffic, and cross the road in a straight line.
Of course you prefer to be seen but not blinded. So do I. However, you need a good bit of light to see a pedestrian in dark clothes without reflectors at 80km/h before you hit them -- or a deer, for that matter. Since attempts at getting pedestrians (and deer) to wear reflectors have not been universally successful and similar attempts at getting drivers to go slower than 80km/h on country roads seem doomed to failure, the only option left is to have enough light on the cars.
Cyclists are anywhere a car might be in the same situation, including right next to the centerline if they're about to turn left.
At night on an unlit stretch of road? Brave cyclist.
Cyclists are all the way over on the other side of the road. It would take a severe misdesign to blind them. Pedestrians rarely wander on unlit streets, and where they do I bet they prefer being blinded and seen by the driver instead of being run over.
They aren't too bright, they're just pointed wrong. Just make automatic adjustment a requirement and the problem goes away. Or require that they automatically dim when following another car. Depending on how they do it, you could even make headlights which light up everything except the already-brightly-lit car in front.
Really, the only problem with the factory-installed lights of high-end cars right now is that in many cases the rear LEDs flicker. This means that when you look away from them for a moment they appear suddenly brightly lit, like the stop lamps. Hopefully the lasers won't have that problem, or at least flicker at 10kHz+.
Several countries require cars to have some kind of light on during the day as well.
You could easily have ended up with the undeployable mess that is self-signed IPSEC certificates. Sometimes it is best to be careful what you ask for, you might get it.
Energy density for lithium air is 18.8MJ/kg, if you have to carry the oxygen with you. Twice that at take off if you use atmospheric air. 9MJ/kg including oxygen has been achieved in the lab. Not 43MJ/kg, certainly, but you are lucky to get a third of that energy out with helicopter engines and the engines or turbines are quite heavy.
Yes, the particular electric helicopter from TFA is all fun and games and doesn't have a future. Nothing wrong with a bit of fun and games.
The laws of physics still have room for at least a 10-fold improvement in battery technology compared to current commercially available batteries. Of course this helicopter is a curiosity, it would be a curiosity even if it was powered by a conventional engine! It isn't exactly something you could use for commercial flights.
I would expect to see electric private planes to become popular within 10 years (popular within the small community which has private planes anyway) and perhaps another 10 years before it makes serious inroads among smaller helicopters.
Quite portable as long as you're little endian and PCI. Good luck if you aren't.
Absolute time only exists when you are in the same frame of reference as the UTC clock. This may seem like a trivial distinction to you, but GPS would work very poorly if we did not compensate for the satellites not being on the "absolute" UTC.
If we colonize other planets on a large scale, that would imply other solar systems. It is completely uninteresting what hour it is in a different solar system when round-trip latency is 9 years.
Yes, am/pm would make a tiny bit of sense if pm meant "add 12 hours". Alas, pm means "add 12 hours except don't do anything if the hour-number is 12" and am means "subtract 12 hours if the hour-number is 12, otherwise don't do anything". Clever.
The protocol does not require the server to answer at all. The server can just send an error response if it gets too many ranges in a request. The protocol designers cannot know how many resources a given server has available. The most they could do was add a specific error response for "too many ranges, resubmit as individual requests".
I don't believe you. See Mandatory File Locking For The Linux Operating System. Even with that, all you have to do is clear the gid bit to kill the "mandatory" lock, and the so-called locks are subject to race conditions.
Linux has only rudimentary mandatory lock support. Approximately no one uses it, and you need to add a mount option to the file system to enable it.
There are better standards than 10base-T for single pairs of phone wire. VDSL and HomePNA are obvious choices, with VDSL being the obvious choice for an installation like this. I have no idea where you would find 100base-T4 NICs and switches today.
It will take a lot of work to go from having to ask for the basics on Slashdot to implementing a reliable hotel wireless network.
What's your point? You're still comparing a useless product from 2008 with a very useful product from 2011. Strangely enough the useful product has trouble being cheaper than the useless product.
In 2008 you could even get special Chinese drives labeled 64GB with special controllers that only kept the last xx MB you wrote. Those were even cheaper.
The SSD's that were $1/GB in 2008 were total crap though. Often slower than regular hard drives, even for random access.
Intel's X25-M arrived late 2008 at around $600 pr 80GB.
Apples other CEO's were AFAIK paid in about the same way. That didn't work.
In a perfectly competitive market, companies which pay too much for their raw materials in the short term go out of business. Since most markets are not perfectly competitive, it is possible to accept a short-term loss for long-term gain. However, it would be difficult to prevent the competitors going for short-term gain from benefiting the long-term planning of the other companies.