Well we do know how much energy you need to bend space-time even if we can't actually bend space time. In the case of the Alcubierre drive, you need more energy than in the visible universe. Also you need "negative" matter, that currently does not exist. In fact anything that permits FTL always violates some conservation parameters widely believed to be true (bit like conservation of energy, and entropy of the universe is always increasing). So even if you could bend space time, you still may not have FTL.
Don't forget that any from of FTL also violates causality.
Of course this does not exclude FTL travel, but if I were a betting man.... I am not sure it is a good bet.
And yet, we don't need FTL to reach the stars. We just need to expand our thinking and timelines to match the vastness of space. Next quarter profits just won't get us there.
There are ways to get to the closer stars without generation ships, assuming you wait till your 30 to have kids;). Antimatter is well within the physically plausible. You would need a solar collector/antimatter generator the size of the moon close to the sun. But once done, you could get 50% or more the speed of light. Even Fusion can get 2-5%C. Then there is even beamed energy...
However i do agree, if just surviving is the goal, we are better of just doing stuff here. Even in my perhaps far off antimatter generator, you could build quite a substantial space station instead.
If/when we leave here, it won't be survival the drives us.
99.9% of these people will just keep smoking. Just like every "sky if falling AGW" wants everyone *else* to fix it, everyone *else* to pay for it, and everyone *else* to be inconvenienced by it.
I am all in favor of cautionary measures and there are many good reasons to lessen our dependency on oil and other fossil fuels. But the level of alarmisim and zero tolerance for scepticism has got to plain stupid levels. These are *models* that give predictions, they are not *facts*.
I have worked for a few. They all had one thing in common. They are small companies and they stayed small. By small I mean about 20 employees or less.
My theory is that once a company gets bigger, it all gets lost in overheads and PHB. Basically at some point management becomes bigger and more important than the developers and the engineers. Then the guys in charge end up being folks with MBA's and have no idea about the client or product of the company other than a 5 min slide show from the technical departments.
A good example of how this goes all wrong in the end. When a company is downsized, who is first to go?
IPv6 is however a very structured address space. You can't just pick a random number. IPv6 also supports much easier IPSec since there is no evil nat.
Privacy or true Anonymity is a much harder problem to solve no matter how you do IP numbers. Even things like Tor are only partially successful.
Spoofing in both systems is in fact rather hard if you want the reply packets (most spoofing is for syn attacks etc). Basically you must be a router somewhere important.
But that hole is for just one years worth and for just *one* power station. Not even a very big one at that. Also the He-3 is only in the top layer with a average depth of 3-4m IIRC.
The problem with intel cards is that the drivers are buggy as hell. Just try and develop for them. You quickly find out that its not DX anything compatible.
Do you really think it will not be possible to track and otherwise breach "privacy concerns" with 100% Free software (free as in freedom). The cell network itself can track you. Websites running Apache can track you, hell even the xray scanners at the airport could all be running 100% RS approved code. Free as in freedom software does not remove the issues of government surveillance.
1,100km over 100 years is hardly matching the statement
that compass doesn't work reliably any more. Areas of "magnetic anomoly" are large and growing.."
now does it. In fact even with the current level of "acceleration" it is still only.36 deg a year. Sure you can't go 10000km on a single bearing with that. But then regardless you never should.
A choke here and there does not even begin to solve the problem. Detailed full EM simulation (time and frequency ) is start. But only true testing with actual components really gets you there. Even solder blobs can turn a unsusceptible board into a susceptible one.
Commercial airline specs are so similar to mil spec that they are often interchangeable.
But, did you know that the 60Hz synchronization of electrical generation in the US is reliant on GPS clocks?
Sounds like BS to me. First it makes more sense to synchronize to the power lines them selfs, via a PLL or what not. Second we had power grids long before GPS. Third, its trivial to show that the 60Hz single from the socket is only very approximately 60Hz. It has high levels of drift, which means you *can't* synchronize to with a different timebase, you should sync to what you need syned... a PLL(Phase Locked Loop) on the 60Hz grid signal itself.
This is not really correct. CDMA for example is not really affected. GSM doesn't need it that accurate and for the most part does not use GPS time signals, not to mention that they do have good local clocks and PPL. There are some methods that use it, but IIRC they don't really *need* it.
The very definition of common mode failure. However a flare of that magnitude is exceptionally rare. These are hardened sats. For the most part a flare will reduce there operational lifetime rather than destroy them outright. A few days of missing GPS will not be the end of the world.
You have a citation for that? Because from my Geo physics courses, the reversal is quick on geological timescales... ie 1000-10000 of years. Its not expect to "flip" in anything under the order of 10000 years.
Don't forget the pulse is just 100ns. So at 1MW that is only 0.1J of energy. These types of lasers typically pulse no more than 1000 times a second and often only about 10 pps. This gives a average power rating of just 1-100W.
1MW for 100ns is just 0.1J. A teaspoon of gasoline has more than 100kJ of energy. I don't expect a laser pulse that feeble to do much no matter how you slice it. Note that at my old work we had a 1TW laser. Pulse power wasn't much higher than this one. Its not clear to me that this would do anything more than mark a razor blade.
In my hostel, some of the more tech guys worked out the magstripe based credit system for the vending machines. We have beer in our vending machines. They paid nothing. Did the same thing with ski fields season passes.
So yes, some think that "can't afford, but want anyway.." is a perfectly good reason. You are welcome to disagree of course, and the law simply doesn't care why.
My problem is that quite a lot of DVDs etc don't work on my players or PCs anymore. And when i try to get my money back, they say its not their problem. Finally a lot simply don't come out (TV series) soon enough to be useful.
Roads and planes are subsidized at 0.5-1.1 cents per passenger mile, while rail in the USA is subsidized at +20 cents per passenger mile. Since road and rail will use similar amounts of electricity, roads make sense.
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Well we do know how much energy you need to bend space-time even if we can't actually bend space time. In the case of the Alcubierre drive, you need more energy than in the visible universe. Also you need "negative" matter, that currently does not exist. In fact anything that permits FTL always violates some conservation parameters widely believed to be true (bit like conservation of energy, and entropy of the universe is always increasing). So even if you could bend space time, you still may not have FTL.
Don't forget that any from of FTL also violates causality.
Of course this does not exclude FTL travel, but if I were a betting man.... I am not sure it is a good bet.
And yet, we don't need FTL to reach the stars. We just need to expand our thinking and timelines to match the vastness of space. Next quarter profits just won't get us there.
There are ways to get to the closer stars without generation ships, assuming you wait till your 30 to have kids ;). Antimatter is well within the physically plausible. You would need a solar collector/antimatter generator the size of the moon close to the sun. But once done, you could get 50% or more the speed of light. Even Fusion can get 2-5%C. Then there is even beamed energy...
However i do agree, if just surviving is the goal, we are better of just doing stuff here. Even in my perhaps far off antimatter generator, you could build quite a substantial space station instead.
If/when we leave here, it won't be survival the drives us.
I don't think you are suppose to use real data for these estimates. And don't get me started on using exsiting data as a Bayesian prior.
99.9% of these people will just keep smoking. Just like every "sky if falling AGW" wants everyone *else* to fix it, everyone *else* to pay for it, and everyone *else* to be inconvenienced by it.
I am all in favor of cautionary measures and there are many good reasons to lessen our dependency on oil and other fossil fuels. But the level of alarmisim and zero tolerance for scepticism has got to plain stupid levels. These are *models* that give predictions, they are not *facts*.
I have worked for a few. They all had one thing in common. They are small companies and they stayed small. By small I mean about 20 employees or less.
My theory is that once a company gets bigger, it all gets lost in overheads and PHB. Basically at some point management becomes bigger and more important than the developers and the engineers. Then the guys in charge end up being folks with MBA's and have no idea about the client or product of the company other than a 5 min slide show from the technical departments.
A good example of how this goes all wrong in the end. When a company is downsized, who is first to go?
IPv6 is however a very structured address space. You can't just pick a random number. IPv6 also supports much easier IPSec since there is no evil nat.
Privacy or true Anonymity is a much harder problem to solve no matter how you do IP numbers. Even things like Tor are only partially successful.
Spoofing in both systems is in fact rather hard if you want the reply packets (most spoofing is for syn attacks etc). Basically you must be a router somewhere important.
Even the p B11 reaction has some side reactions that produces small amounts of neutrons.
But that hole is for just one years worth and for just *one* power station. Not even a very big one at that. Also the He-3 is only in the top layer with a average depth of 3-4m IIRC.
The problem with intel cards is that the drivers are buggy as hell. Just try and develop for them. You quickly find out that its not DX anything compatible.
RED is a good movie... or do you think people only go to the movies for twilight sequels?
You forgot mind control chips....
Do you really think it will not be possible to track and otherwise breach "privacy concerns" with 100% Free software (free as in freedom). The cell network itself can track you. Websites running Apache can track you, hell even the xray scanners at the airport could all be running 100% RS approved code. Free as in freedom software does not remove the issues of government surveillance.
How about "coding live" concerts?
that compass doesn't work reliably any more. Areas of "magnetic anomoly" are large and growing.."
now does it. In fact even with the current level of "acceleration" it is still only .36 deg a year. Sure you can't go 10000km on a single bearing with that. But then regardless you never should.
And what does a nonlinear element do to such a signal?
A choke here and there does not even begin to solve the problem. Detailed full EM simulation (time and frequency ) is start. But only true testing with actual components really gets you there. Even solder blobs can turn a unsusceptible board into a susceptible one.
Commercial airline specs are so similar to mil spec that they are often interchangeable.
But, did you know that the 60Hz synchronization of electrical generation in the US is reliant on GPS clocks?
Sounds like BS to me. First it makes more sense to synchronize to the power lines them selfs, via a PLL or what not. Second we had power grids long before GPS. Third, its trivial to show that the 60Hz single from the socket is only very approximately 60Hz. It has high levels of drift, which means you *can't* synchronize to with a different timebase, you should sync to what you need syned... a PLL(Phase Locked Loop) on the 60Hz grid signal itself.
This is not really correct. CDMA for example is not really affected. GSM doesn't need it that accurate and for the most part does not use GPS time signals, not to mention that they do have good local clocks and PPL. There are some methods that use it, but IIRC they don't really *need* it.
The very definition of common mode failure. However a flare of that magnitude is exceptionally rare. These are hardened sats. For the most part a flare will reduce there operational lifetime rather than destroy them outright. A few days of missing GPS will not be the end of the world.
You have a citation for that? Because from my Geo physics courses, the reversal is quick on geological timescales... ie 1000-10000 of years. Its not expect to "flip" in anything under the order of 10000 years.
Don't forget the pulse is just 100ns. So at 1MW that is only 0.1J of energy. These types of lasers typically pulse no more than 1000 times a second and often only about 10 pps. This gives a average power rating of just 1-100W.
1MW for 100ns is just 0.1J. A teaspoon of gasoline has more than 100kJ of energy. I don't expect a laser pulse that feeble to do much no matter how you slice it. Note that at my old work we had a 1TW laser. Pulse power wasn't much higher than this one. Its not clear to me that this would do anything more than mark a razor blade.
In my hostel, some of the more tech guys worked out the magstripe based credit system for the vending machines. We have beer in our vending machines. They paid nothing. Did the same thing with ski fields season passes.
So yes, some think that "can't afford, but want anyway.." is a perfectly good reason. You are welcome to disagree of course, and the law simply doesn't care why.
My problem is that quite a lot of DVDs etc don't work on my players or PCs anymore. And when i try to get my money back, they say its not their problem. Finally a lot simply don't come out (TV series) soon enough to be useful.
Roads and planes are subsidized at 0.5-1.1 cents per passenger mile, while rail in the USA is subsidized at +20 cents per passenger mile. Since road and rail will use similar amounts of electricity, roads make sense.
Can you cite a source for that?