Junghalli wrote:Laser lightsail propulsion requires something like 6-7 gigawatts per newton. So a 1 million ton ship accelerating at 1 gravity would use somewhat less than 7 X 10^19 joules. That is a little less than .00002% of the sun's energy.
A fairly robust colonization program certainly seems feasible even if it is a very low priority for the civilization as a whole.
Absolutely, so long as the guys controlling the launch lasers are trusted by the rest of civilization. Though I really don't think you'd see "colonies per second" levels; allowing for the limited efficiency of the Dyson swarm and the proportion of the system energy budget being spent on other purposes, I don't think you'd get more than something on the order of 10000 ships going at a time. And they take an average of well over 10 years to get where they're going... that doesn't multiply up to anything much faster than "colonies per day," at best.
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Xeriar wrote:Simon_Jester wrote:
Xeriar wrote:EY has some sort of 'legalize rape' fetish, I'm not sure what it is or if he even has any real comprehension of the phenomenon.
Did he ever promote this idea anywhere else, or did it just occur in this one place?
If it just occured in one place, then the most likely explanation is that he was trying to prove that his future society is WEIRD, in which case he succeeded beyond his wildest dreams. If he's brought it up before or since, your explanation is as good as anything else I can think of.
He also brings it up as a potential for how far society might 'degenerate', I think in his 'Continuous Extrapolated Vision' article (if I spelled that right). I don't think he understands what is going on with our 'degeneration' - the rise of individual will and respect for that will, so long as it does not interfere with another.
Wait... does he mention it
as a good idea, or does he mention it as something that might conceivably happen in some hypothetical weird society? It matters. For example, Heinlein introduced certain sexual weirdnesses repeatedly in his work, in terms that make it pretty clear he approves. Does Yudkowsky believe that "legalized nonconsensual sex" is a good idea (which I doubt), or is it just something he's thought of? Remember, the guy has a very powerful idea generator in his brain; the fact that he thinks of a sexual weirdness does not mean he has a fetish for it or that he approves of it.
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It's really hard to predict how it can turn out, being the future and all.
The issue is not so much that it might be a unified or diversified political bloc - keep in mind, whoever builds this sort of thing is going to be beyond any sort of need for resources. There is a not-insignificant chance that it actually gets set up as a system authority sort of scenario - the controller would not be human, but something a number of humans understood and agreed to. This has several advantages - you need technically and mathematically keen people to design this sort of thing, you do not want to fuck up, and in game theory terms, the benefit for cooperation is effectively guaranteed +infinity, while non-cooperation has a large -infinity chance. The problem has "cooperate, dumbass" written on its face.
Any rational agent is going to want to cooperate and find an ideal solution. The threat is some yahoo group actually managing to get a four-year head start. It falls under the level of 'existential risk', much the way Seed AI proponents discuss.
As long as people are aware of just how much power even a partial Dyson statite swarm offers, there will be plenty of 'old style' power blocs willing to vaporize anyone they don't trust with that power level
before the new groups can build up enough of a swarm to be invincible and all-powerful, so I think the existential risk is relatively low-probability here.
The first group to build such a swarm is, by necessity, going to be a group that its peer-groups were willing to trust with that kind of power, because a Dyson statite swarm cannot be constructed in secret or out of range of enemy attack.
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The concept of taxes in a society where individuals can be direct generators of more wealth than Earth has ever had is a bit amusing.
It would work more like "This many people want to give Venus a moon and terraform it. This many people want to expand our energy harvesting. This many people want to colonize stars 453-657. This many people want to terraform Mars. This many people want to terraform the Galilean satellites. This many people want to harvest deuterium from Uranus and Neptune. ..."
After you tally up the exaprojects, you distribute energy accordingly, possibly weighted e.g. their will be plenty of interest for terraforming Mars and that will only happen so fast.
In this case, when I said "taxes" I meant "resources (esp. energy) diverted from a project I'm interested in to a project I'm not interested in." When you get down to it, that's what ALL taxes are; an organized body allocates some of 'your' resources to something else that you wouldn't normally use them for.
The real question comes at the transition from "power is controlled by large organizations and sold to individuals, who use it only for 'personal' goals" to "power is controlled by individuals who use it both for 'personal' and 'large-scale' goals." I'm not sure people will keep building more statites to power civilization through that inflection point, not least because of the potential threat involved in giving random strangers access to terawatt-range power supplies.
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Remember that we're talking about planet-devastating energy levels here. Launch lasers for interstellar colony ships are more dangerous than nuclear weapons by orders of magnitude, and you damn sure don't see those being available to even large civilian organizations. Not even if those organizations protest that what they want the nukes for is 'really important'. So the level of social will required to sign over thousands of laser launch batteries is... nontrivial, just like the level required to sign over an arsenal of hydrogen bombs for an Orion drive.
The meek shall inherit the Earth, the rest of us will take the stars. What are the rednecks and treehuggers that can actually comprehend the event going to do? March on Washington?
Ah, yes, the apotheosis of the chauvinistic nerds... I don't buy it.
Remember, above all else, that
governments are not stupid. At any given time they hold almost all the cards; if they didn't then someone else would replace them
as the government. If you and your million fellow-minded colonization enthusiasts try to pull together a collection to build a Dyson swarm and a battery of lasers to fly out of the solar system, they're going to be asking you some pointed questions before you even get off the ground. They already have significant power resources of their own; they might be insignificant compared to what you could hypothetically have but they're damned sure significant compared to what you DO have. And they're not going to let you grab the keys to anything powerful enough to destroy them until they know very, very well they can trust you.
You might be able to trick the rednecks and acquire phenomenal cosmic power before they realize what's happening. But fooling Pentagon military analysts is not so easy. They may not be interested in interstellar flight, but that doesn't mean they can't do the math.
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So a nonhuman species for whom self-determination is already a creepy alien concept and is told that we take it dead seriously, so seriously that it's as important to us as doing utilitarian good, is going to be skeptical. They're going to point to all the people in our own history who infringed on others' self-determination for the sake of a proclaimed utilitarian good, and ask why they were not stopped, the way that someone who had pronounced their intention to eat thousands of babies would have been. If we take this so seriously when we're suddenly talking to aliens planning to reshape our species... why don't we take it so seriously when talking among ourselves?
In EY's world, probably not. In a future in which you or I are actually talking with said aliens, there would be a clear point at which we grew past that.
I am not so optimistic; I do not expect people to outgrow the impulse to find ways to make others do what they want.
Power corrupts even the rationalist technophiles when they actually start to get it.
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Junghalli wrote:Xeriar wrote:The meek shall inherit the Earth, the rest of us will take the stars. What are the rednecks and treehuggers that can actually comprehend the event going to do? March on Washington?
I don't think it's so much rednecks and treehuggers he was talking about there as governments that would have an interest in stability and security, which are ill-served by a situation where every Tom, Dick, and Harry has access to potential WMDs. Governments have every incentive to try to keep potential WMDs out of the hands of random non-state actors. This is true for nuclear material in today's world, and it's most likely going to be true for potentially planet-destroying phased array lasers in the world of 2200. I believe it's part of his argument about why random people wouldn't be trusted with the kind of energy needed to launch high fraction of c starships.
Well, they
won't. The laser batteries are going to be the exclusive monopoly of people who had enough clout to build them without anyone else trying to stop them. People who don't have enough of other kinds of power to stop existing governments from interfering don't get them, any more than they get their own nuclear bombs today.
If so it's wrong, however, because a starship riding a laser pusher doesn't control that energy any more than a subway train operator controls the power plant that keeps the subway trains running. The system is a lot like an electric railroad in that the vehicle doesn't supply the energy and has very limited freedom of movement, so it's got very little terrorist potential. Bussard ramjets would be the ones to worry about in that respect (if we could overcome the formidable technological challenges of building them).
Thing is, the way Xeriar phrased it, it's strongly implied that one of these launch laser arrays gets built by a consortium of like-minded individuals, one that Xeriar identifies with, and
not by a government. That's what I don't believe; I don't find it credible that existing power blocs will let some bunch of random people acquire control over the launch lasers. If they all hop on the ship and get fired into space by someone else's laser, that's fine as long as the someone else is trustworthy.
My argument is not that launch lasers will not be built; it's that they won't be built purely because Citizens # 5.9432 billion through 5.9433 billion want them built.