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Not sure how it works, but if you have the non-docs treating, you may wish to run a variable where they make the situation worse.
Especially if our good intentioned non-docs are attempting major surgery. It would probably be preferable to just die in that situation than to be opened up by a bunch of amateurs and then die!
This would seem to imply that information could be sent at faster than light speeds which makes me suspicious. I'm not a physicist, but doesn't quantum entanglement just deal with the spin states of the sub-atomic particles? I'm not sure putting an external stimuli on one particle is necessarily going to cause the entangled particle to react in a way that can cause propulsion. I don't know, something just seems fishy about this. I'll remain open minded though.
The really good space elevators should be like conveyer belts, continuously going up and continuously going down. Of course this would probably mean considerably more weight. Maybe if each container was spaced a mille apart it wouldn’t be so bad.
It wouldn't work because the ribbon has to be tapered in order to hold itself up. There's no way to maintain the taper and have the ribbon moving in the way you describe at the same time. Anyhow, it would be a mechanical nightmare to have that thing in constant motion because the ribbon has to be moved out of the way of orbital traffic not to mention that having moving parts at the counterweight is going to cause a lot of headaches if they break down. If you want the climbers to come back down to Earth, just build a parallel se dedicated for downward traffic and an extra powerbeaming station to power the motors on the downward climbers.
I admire (though I disagree with) the optimism of the people here about our worthiness to inhabit other worlds, I do think that sometimes it is necessary for us to focus on having hope instead of dwelling on the overwhelming problems that face the world. I think one of the reasons I enjoyed coming to this forum is because it was a break from my usual cynical hangouts that focus on the horrid state of the world, and I've always followed space missions, particularly missions to the planets. Unfortunately though, I believe Shaun is correct, I'm afflicted with deeply misanthropic feelings, and unlike some psychos who seem to actually revel in these types of emotions, I find them depressing and scary. I fear that if those in the radical environmental and deep ecology movements don't fight for more solutions that respect the dignity of human life along with saving the natural world, they will face a major backlash (for instance, people probably won't like the fact that it was an "environmentalist" that proposed engineering an airborne version of the HIV virus.) Over the years I've seen these movements become more and more overrun by people who can't see beyond their hatred of the human race and don't realize or care that it's not the average person, but rather the huge powers that be, that are screwing everything up. I don't believe primitive societies really had these types of problems, but were more egalitarian and had more of a spiritual grounding based in nature that gave them a purpose in life. I believe the best solution for humanity is to slowly wean itself from technology (which is the ultimate cause of our social problems) and to go back to living a simple and eco-friendly lifestyle. Well, this is my last post here, I have nothing further to contribute.
*Hi guys: This is a really interesting thread in all respects. I like to consider the future of robots, and that "hive mind" potential is an intriguing concept. It all is. I think it's entirely possible they could "take over" at some point. We'd be wise to start programming in loyalty to the creator (humans) or something along that line...
Believe it or not, there are actually computer scientists out there who support building AI that will put the human race out of business. Marvin Minsky (one of the leading computer scientists) even went so far as to say that our AI creations will eventually "retire" the human race and that our extinction at their hands will be no big deal in the scheme of things. And yet people like Shaun accuse me of being some anti-human monster for opposing the reckless development of technology, as he so slightly hinted at in another thread.
Shaun, I don't get your reasoning, you seem to be saying that cnts will be ok because they can't be as bad as diesel fumes which you describe as horrendous and rightfully so. Like Byron hinted at, we need to stop brushing our problems under the carpet and confront them. I believe in the precautionary principle, we need to fully analyze technologies for their environmental and health affects before they are unleashed on the world. Corporations and even governments might not like it, but it's a sane policy, especially when dealing with nanotech. There is good news though about diesel fuel improvements, many countries now are requiring bio-diesel to be mixed in with regular diesel, which makes it more eco-friendly. France and the USA are requiring these fuels to be blended together and in the future we might be able to go to 100% pure bio-diesel if the manufacturing costs keep falling.
It would be pointless to populate and terraform Mars, only for the 15th generation and beyond to begin making the same stupid mistakes, becoming destructive and irresponsible, etc. Why create a planet only to trash it? That would be reprehensible (understatement).
Knowing human nature though, I'd be surprised if they even make it to a 15th generation. It's an absolute miracle we haven't already blown ourselves off the globe. With the new advent of artificial virii and terminator crops, I'm sure our days will soon be up. All you need is some freak to create an airborn version of the AIDS virus and we're all but done for. Humans don't have the morality to handle high technology.
The Moon deserves special recognition as a heritage object that shouldn't be developed under any circumstances, especially the side that faces Earth. Countless people, cultures, religions, etc. incorporate the moon and no small gaggle of rich busy bodies has a right to destroy it for their own aggrandizement. Seriously, would you support some rich corporation going up there and defacing the moon? Would you want to see their "handywork" everytime you looked up at that once beatiful orb?
Well, nuclear fusion would certainly be better than fission, but still dangerous. ITER, one of the most expensive and irresponsible science projects ever done on an international scale, might develop the technology to make fusion feasible, but hauling along highly toxic substances like tritium isn't exactly appealing. As someone aptly put it, we need to put our technophilic cold war dreams behind us.
For more info on this nuclear monstrosity visit this page:
Byron I agree with everything you said. I'm a Green Party member myself and its ranks seem to be swelling. In a few years we might actually be a rival to contend with on the political stage.
And that is the fundamental difference in how we view the universe. I would embrace the opportunity to further the reach of civilization, even if it means hardship for me. I'd rather spend a year in a metal can travelling to a new world than spend a comfortable lifetime in a city. Those who believe that way explore, tame, and settle frontiers until they become too civilized and ordered, forcing us to move on.
What do you do though when there are no frontiers left to tame? If we're never able to leave the Solar System we could run out of new places to go rather quick and then we'll have the problem of trying to provide for potentially trillions of people rather than just a few billion. If Earth remains the only home of humanity, we can insure that resources will be preserved for all time.
Those who think as you do not only would never expand their range, but require us and the work we have done. To rail against the evils of something yet partake in the bounty it provides is hypocrisy. Unmanned craft may be best for exploring the solar system, but without actually going to these worlds there's no point.
For me, space exploration is more about science and discovery than anything, and I believe unmanned craft are a viable and exciting way to do that, not to mention the most economical.
Got good news for you Mad Grad. We don't have to sqaunder generations on thousand-year voyages. Antimatter propulsion can reach velocities approaching light speed or more, which means that say 500 years from now, any solar system within 20 light-years or so should be reachable with trip times of a few decades. I.e in considerably less than a human lifetime.
That passage above illustrates the most important reason not to stretch our human empire too far, the reliance on ultra energy-dense substances like anti-matter and other nuclear fuels is dangerous. When you consider that 2 grams of plutonium can kill millions of people, it seems rather irresponsible to launch 72 pounds of it on Cassini with a rocket that has a 10% error rate. Imagine how much that type of thing we'd be launching on a constant basis if we had to keep space bases fueled up. I just see no reason for sending people into space. It's not a place where we belong.
I hope your right about the health effects of nanotubes Rxke. I read that they don't dissolve in the lungs and could cause the type of scarring that asbestos does, but that was awhile ago so maybe new light has been shed on the problem. I wonder though, what if you were to inhale a bundles of cnt dust? The cnt molecules individually might not hurt you, but bundles of them building up in your lungs might. It's going to be a shame if we can't use the material because of health reasons.
Wim:
Wow hold it there please. Even in the year 2358 there will still be problems on earth (if it's still there). You don't mean that we shouldn't go before all those problems are solved, do you ?
I mean exactly that. Our civilization is a mess and shouldn't be allowed to spread off of Earth. I don't understand why people want to live on Mars anyway and not Earth. Mars is worse than a prison compared to Earth. Anyhow, the more people we have in the Solar System, the more competition there will be for resources. Two fully populated planets could create a lot of unseen problems. Why go there?
rxke:
About curing the ills on Earth: both are not mutually exclusive, for instance research into cheap, simple to construct greenhouses could be used here, same with recycling, materials, engineering, making exhausted land life-bearing again out of 'dead' soil (Sahel) etc.
I think it would actually help a lot of problems getting solved here on our battered, wounded beautiful blue Globe.
We don't actually need to go to Mars to develop that technology though. Instead of some big expensive 'Marshal Plan' for Mars, we should have one for renewable energy and eco-friendly technologies instead. We're on borrowed time with fossil fuels running out, and nuclear power IS NOT an option.
I know I'm going off topic but after reading about how in the "wild west" days the frontier had a high ratio of men to women, will the same occur if mass space migration happens? Oppression of women is probably the reason that there were a lot less women in the west than men, but it should make a good sociology project to see what the ratio of women to men turns out to be during the early era of mass migrations into space.
No, the one i'm looking for is elusive, if i try to google it, i get gazillion matches... sigh...
The Space elevator is in my 'favourites' book, another amazing project... But it's not using nano-machines, 'only' nanotubes for it's cable.
I'll never find that article back, i'm afraid, found it 'by accident' while looking around tech pages, forgot to bookmark it.
I read about a nanotube composite that they made on sheets of plastic and then could peel the composite off the plastic after it had setup. Is that the article your referring to? I just wonder though if the bad health effects cnts can cause will hamper their acceptance. Asbestiosis (spelled wrong?) is not a pretty disease by any stretch of the imagination.
The United States should offer to launch it. Drilling is probably the only way we're going to find evidence of life on Mars since the surface is so hostile and prone to erosion. The article doesn't say though how deep the rover can drill. Hopefully it can go at least the 20 centimeters it said comparable technology is capable of.
Why terraform Mars? What possible benefit is there in sending people to settle Mars? If the idea is to escape Earth's ills, maybe it would be better to put our sleeves up and repair Earth rather than run away from the problems.
To get on-topic again: X-Prize contender Burt Rutan's Scaled Composites could get its hands on some interesting new composites in the near future, there are now composites being made (small scale production) that use nanotubes. They look very promising, people calling it a great breakthrough, comparable with the introduction of glass-fiber in composites. The stuff is lightweight, stress and pressure characteristics are spectacular, and it seems very tolerant to high temperatures, there's even talk to use it in rocket engines... (I'll try to find the link)
Imagine Burt getting his hands on this stuff...
CNT could make great wind turbine blades, over a 100 times stronger than steel and only 1/6 the weight. We could build some multi-megawatt monsters.
In case you don't get the Mars Society update emails, I just found the following in my mailbox:
Message: 1
Date: Thu, 13 Nov 2003 23:05:49 -0000
From: "zubrin1" <zubrin@aol.com>
Subject: MGS Produces "Smoking Gun" Evidence for Persistent Liquid
Water on MarsMGS Produces "Smoking Gun" Evidence for Persistent Liquid Water on
Mars
Nov. 14, 2003
For further information about the Mars Society, visit our website at
www.marssociety.org.In a dramatic discovery of extraordinary scientific importance, the
Mars Global Surveyor (MGS) imaging team at Malin Space Science
Systems has produced what have been termed "smoking gun" photographs
proving beyond question the "persistent" existence of large
quantities of liquid water on the surface of Mars during the planet's
youth.The discovery is of critical importance because it means that early
Mars could have supported a biosphere. The scientific importance of
investigating what happened to it cannot be overstated.The Malin Space Science press release states:
"This week, the journal Science has published online (in Science
Express) the most recent MOC discovery: an ancient, eroded, and
exhumed sedimentary distributary fan located in a crater at 24.3?S,
33.5?W. A distributary fan is a generic term used by geologists to
describe a family of deposits that includes river deltas and alluvial
fans. Sometime in the distant past, when it was still possible for
liquid water to flow across the Martian surface, sediments
transported through valleys by water formed a fan-shaped deposit in a
64-kilometer (40 miles) -diameter crater northeast of Holden Crater.What is important about this discovery? First, it provides clear,
unequivocal evidence that some valleys on Mars experienced the same
type of on-going, or, persistent, flow over long periods of time as
rivers do on Earth. Second, because the fan is today a deposit of
sedimentary rock, it demonstrates that some sedimentary rocks on Mars
were, as has been suspected but never clearly demonstrated, deposited
in a liquid (probably water) environment. Third, the general shape,
pattern of its channels, and low topographic slopes provide
circumstantial evidence that the feature was actually a delta--that
is, a deposit made when a river or stream enters a body of water. In
other words, the landform discovered by MOC may be the strongest
indicator yet that some craters and other depressions on Mars once
held lakes. Although hundreds of other locations on Mars where
valleys enter craters and basins have been imaged by MOC, this is the
first to show landforms like those presented here."The complete MSSS release, together with photos proving the discovery
can be found on the internet athttp://www.msss.com/mars_images/moc/2003/11/13/
The Malin MGS discovery marks Mars as the Rosetta Stone for letting
us know the truth about the prevalence and potential diversity of
life in the universe. At a time when NASA is trying to figure out
what should be the goal of its human exploration program, the finding
is decisive.Mars: If we don't go, we won't know.
For further information about the Mars Society, visit our website at
www.marssociety.com.
The prospect of a whole planet ripe for colonization without all that whining about killing the savages that live there! Oh, how generous the gods can be! And considerate too.
Well, I don't think many of us were focused on the moral question of going to Mars, but rather what we believed what what the historical likelihood would be. If there were 'savages' on Mars you can bet your a$$ I would be against colonizing it. And even though there are likely no 'savages' on Mars or anywhere else in the Solar System, I don't see what the big deal is about colonizing space anyway. Imagine how miserable it would be to be cooped up in a metal can most of your life. Not something I'd do, thankyou very much. Unmanned craft are the obvious best way to explore the solar system.
I believe that most of our actions are motivated out of selfish concerns even though that word 'selfish' is so loaded we can't help but associate it with excessive greed and taking at the dentriment of others. I believe 'selfishness' can be asset to society if people believe that the best way to help themselves survive is to help others. I believe selfishness takes on an evil dimension when it's used as a competitive measure to deprive others and justify excessive materialism. Unfortunately the lopsided focus on individualism and money in our society produces the latter type of selfishness.
Between doing four things at once, I must've overlooked your link, would've saved me a lot of time. I realize food isn't possible with that design, what I meant is that with refined future technology it could be possible. The machine in the article is only a crude form of molecular assembly. I was looking way ahead.
Thanks for the link, Free Spirit, i installed it right away on my old Palm, at last something interesting to read on my daily train rides
Glad I could be of help.
BTW, this might also be of interest to people: Design study of a primitive Nanofactory
85 pages study, peer-reviewed, pretty awesome results: factory could be possible in 10 years time, no real obstacles theoretically... once first 'assemble' is built, it could spawn a macro-sized nanofactory in a matter of weeks. Possible applications are quite mind-blowing. (read the end of the article if you can't be bothered reading the whole stuff...)
The paper raised a lot of eyebrows in the nanotech community, it's bein' taken quite serious.
I had briefly heard of this before but I googled it and came up with thearticle. I didn't really expect to live long enough to see MNT, but I've just changed my mind. Imagine how many problems a nanoassembler/disassembler could solve. Many of our environmental and waste problems would be considerably eased although there's the very real danger of some lunatic(s) using it for great evil. If we could create food this way, we could restore a lot of land back to nature as growing food on a mass scale may no longer be needed which means solving a lot of water issues. But then again, no telling which despot will use the technology to kill us all.
Great message Shaun, I often wonder what's going on down under. North Korea cries foul every time Australia catches one of Kim Jong Il's drug smugglers (er I mean harasses its legitimate trading ships sneaking in during the night) trying to land cargo on it's beaches. Totalitarian and corrupt morons like the 'Dear Leader' Kim Jong Il give socialism a bad name. Half his nation is starving and all he cares about is maintaining his war machines and nukes. I think its crazy that a number of South Koreans adore Kim, I can understand their sentiments against capitalism and America's occupation, but defeating it by joining up with Kim is like jumping out of the frying pan and into the fire. But considering how Bush has been threatening the little despot up in the North, I can understand Kim's motivations to stay militarily ready.
If you want to see how heavy handed, totalitarian rhetoric works, visit the North Korean Central News Network
It's very unfortunate that many people fall into the trap of equating communism with the despotic rule of a lawless dictator. That's not true communism!
I'm tempted to say that the best way to prevent crime on Mars is to not go there in the first place. But If you're already there and have a violent criminal that's hell bent on destruction, you might have no choice but to let the lunatic out for some of that fresh, Martian air. Better that than to let them totally destroy everything and everyone. For less violent crimes like petty theft, just make the bastard that stole give back what he took and tell him if he does it again he might be treated to some fresh air.