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Top Physicist Advocates Scientific Self-Censorship

spamania writes "The San Francisco Chronicle is running this article about a new book by Britain's astronomer royal, Sir Martin Rees, that advocates restricting scientific research in certain fields in the interest of public safety. In "Our Final Hour", Rees lends a sober, respectable voice to the oft-irrational ranting about nanotech, biotech, and other fields."

39 of 355 comments (clear)

  1. Don't restrict, classify by headkase · · Score: 5, Interesting

    If research is truly dangerous then classify it. But not to research it only leaves you behind when other nations research it.

    --
    Shh.
    1. Re:Don't restrict, classify by khb · · Score: 5, Interesting

      I don't think the good professor is purely concerned with bad people doing evil with science. From reading the article, it would seem that he is concerned that good people doing good research might inadvertently kill us all. So classification wouldn't help.

      Restricting dangerous experiments to safe locations would. It seems to me that the professor is making a strong arguement for serious space colonization, for two reasons:

      1) Doing some classes of nasty experiments on, say, neptune would greatly reduce the consequences to out of control experiments (e.g. nanobots and grey goo)

      2) If the professor is right, that we only have a 50-50 chance of not destroying the earth in the "near" future, having a self sufficient backup colony or six would be prudent.

    2. Re:Don't restrict, classify by Daniel+Dvorkin · · Score: 4, Insightful

      Exactly. There is no security in obscurity or ignorance. The only way to know how dangerous something is -- and to learn how to deal with it if it is dangerous -- is to study it.

      As for the "some experiments could destroy the earth" bit (really just a variant on There Are Things Man Was Not Meant To Know) IMO Rees is doing the typical crochety-old-scientist act. An awful lot of scientists who do brilliant work when they're younger seem to adopt an attitude of "Well, the search for knowledge was all well and good in my day, but you kids these days ..." Regrettable, but I suppose it's part of human nature.

      I can't think of a single area of research in which the benefits of aggressive experimentation and open reporting don't outweight the risks. Not a single one. Biotech, nanotech, high-energy physics ... yes, the risks are real, but the potential rewards are so great that it would be criminal either for scientists to restrict themselves or laws and/or social pressure to lay restrictions on them.

      --
      The correlation between ignorance of statistics and using "correlation is not causation" as an argument is close to 1.
  2. Technology by jetkust · · Score: 4, Insightful

    technology has potential to annihilate

    ...as well as the potential to protect us from annihilation.

    1. Re:Technology by laukev7 · · Score: 3, Insightful

      Let's not forget natural catastrophes. For instance, if we were still in the medieval ages, and a meteor was heading towards the Earth, how could we prevent it from annihilating us (assuming we would even see it coming)? Science may be dangerous if we don't use it with care, but it can be a life saviour.

      Should we also stop research on cures for diseases just because we're afraid that the viruses spread over from medical labs?

    2. Re:Technology by Lord+Ender · · Score: 3, Insightful

      "It is circular to argue that a technology that can annihilate us can also be used to protect us from the annihilation that the technology causes."

      He didn't say to protect from annihilation caused by technology. It could protect us from a deadly natural disease, or a deadly meteor strike, or, in the long term, the deadly destruction of the Sun. If we stopped developing technology, as many technophopes would like, the human race is doomed. Our sun will eventually change so that human life can't live on earth. If we don't develope the tech to colonize other solar systems, we are all doomed.

      --
      A slashdotter who didn't build his own computer is like a Jedi who didn't build his own lightsaber.
  3. Pandora's Box. by Adolatra · · Score: 5, Insightful
    Does the word "Pandora's Box" ring a bell to any of these people? Once a science becomes feasible, it's going to be explored. Better it be done by respectable, civilized scientists than underground organizations of questionable ethical bent.

    I can see it now: "If nanotechnology is outlawed, only outlaws will have nanotechnology!"

    Facetious, but nevertheless relevant.

  4. Good guys or bad guys? by Mononoke · · Score: 4, Insightful
    Wouldn't we rather have potentially evil discoveries made by folks that are on 'our side', rather than have the bad guys discover them first?

    Not all scientists will self-censor, nor are all scientists working toward the greater good. Sometimes it's not their choice (see: Germany, 1940, and Iraq, 1988) to censor themselves.

    --
    NetInfo connection failed for server 127.0.0.1/local
  5. Rabbit and the hare by vwidiot · · Score: 5, Insightful

    Seems to me if you restrict research, not everybody will comply. This will lead to someone other than ourselves having a headstart on the research. The research will be done by SOMEONE so it might as well be us.

    1. Re:Rabbit and the hare by jemenake · · Score: 5, Insightful
      Seems to me if you restrict research, not everybody will comply. This will lead to someone other than ourselves having a headstart on the research. The research will be done by SOMEONE so it might as well be us
      I think it's also a problem of, as soon as one (or a few) individuals "break rank" and start making great discoveries in those fields, then everyone will cave in. Interestingly, I think that this is partly why there's as much looting going on in Iraq right now. If you were a citizen who didn't really want to see a building looted, but you saw a bunch of your neighbors looting the place anyway, you're probably pretty likely to go get some for yourself because the alternative would still leave the place looted but your neighbors would end up with more stuff and you with less. Same goes with potentially harmful research.

      The more I think about it, the more I think that the only solution is a political one. Let me explain...

      These days, our (or, at least, my) biggest WMD worry isn't about countries with nukes or countries with nerve agents... it's about individuals with them. There are too many people to keep track of, and the technology is becoming more and more accessible to individuals. The only way to keep them from actually using them in some act of terrorism is to keep them from wanting to.

      Terrorism is often an option of last resort. I'm sure that Palestinian suicide bombers would prefer it if they could just make a compelling verbal argument for their cause and actually be listened to. It sure would save all the hassle of getting fitted for a torso-bomb. The problem, of course, is that they don't feel like anyone's really listening to them when they try any of the less-drastic-than-suicide-bombing methods of communication.

      So, I think the only way to prevent acts of terrorism is to have everone in the world feel that, for the most part, they are being listened to... that their needs aren't being ignored. Now, I'm not saying that this is necessarily easy to do. I do feel, however, that individual acts of terrorism (whether it is some postal worker going berzerk with a firearm or some dude mailing anthrax to people in Washington D.C....) are going to steadily increase until people stop feeling like they're being treated like cattle....

      ... and that requires political solutions, not technological ones.
  6. Who restricts? by rbp · · Score: 4, Interesting

    IMO, the main problem with suggesting this sort of restriction is, who restricts? The same research might be considered dangerous to some people and necessary by others. The same apply to "moral", of course. In the end, it's all in the hands of humans. To decide which areas should be restricted, or to use science for evil, or to do evil while doing science etc.

  7. Not censorship by KDan · · Score: 5, Insightful

    The usual over-sensationalistic /. headline is, as usual, over-sensationalistic. This is not censorship, but self-control and self-direction. It's not about not publishing things which exist and have been researched (that would be censorship), but about deliberately avoiding avenues of research which are too dangerous given our current rather low level of social evolution.

    However, it's very hard to decide which avenues of research should be avoided. Biotechnology, Nanotechnology and all that promise great benefits, potentially helping us progress socially much faster (eliminating hunger and disease wouldn't do us much harm socially, would it?). The only ones that should clearly be avoided are clear-cut cases like nerve agents, genetic creation of deadly diseases, and all that. Otherwise, it makes little sense to restrain research in other directions...

    Daniel

    --
    Carpe Diem
    1. Re:Not censorship by Kjella · · Score: 4, Interesting

      However, it's very hard to decide which avenues of research should be avoided. Biotechnology, Nanotechnology and all that promise great benefits, potentially helping us progress socially much faster (eliminating hunger and disease wouldn't do us much harm socially, would it?). The only ones that should clearly be avoided are clear-cut cases like nerve agents, genetic creation of deadly diseases, and all that. Otherwise, it makes little sense to restrain research in other directions...

      Biotech = bioweapons
      Nanotech = nanoweapons
      Nerve Agents = tranquilizers, stasis chambers
      Creation of deadly disease = preemptively improving the immune system

      What you consider good can be used for bad, and opposite. If I truly understand how the immune system works and want to extend and improve it to benefit mankind, I also have the knowledge of how to kill, by avoiding all its detection mechanisms, attack mechanisms, defense mechanisms, exploiting its flaws and weaknesses. All I'd have to know to go from vaccine to plague is how to make a replication method (e.g. by air/touch), which is trivial by comparison.

      Kjella

      --
      Live today, because you never know what tomorrow brings
    2. Re:Not censorship by ggwood · · Score: 4, Interesting

      I'm not sure you can "over-sensationalize" the prospect of the whole Earth being turned into a 100 meter sphere of inert goo.

      I agree biotechnology and nanotechnology are certainly going to proceede and we should fund them. It is just certain high energy physics experiments should probably be thought about very carefully.

      And that is the area in which Rees is most knowledgable: astro and particle physics (they interelate alot - note he is an astrophysicst and this kind of inquiry would not effect his field directly). I doubt he is as much of an expert on nanotech, but he included it somewhere in the end of his book as another place for inquiry.

      Yes, the odds of disaster are really slim. Rees is asking, how far from zero should the odds be before we stop research? One in a million? One in a billion? What if there are (say) a million different permutations of the experiment, any of which could trigger the event?

      It is pretty obvious to me that we should be thinking about these things and asking things like, don't these particles collide all the time in nature? (Say, in the Sun or near Black Holes, etc) and if the answer is yes, then is there a signal we could look for?

      I'm sure people already are doing some back of the envelope calculations, but trying to get funding for this kind of work, as the above post so clearly indicates, is going to be a tough sell to parts of the public. Even the \. crowd who in general would be rather supportive of scientific funding.

      --
      a war on terrorism? How can we end a war on a method?
  8. Contrast with an earlier /. story... by TheFrood · · Score: 5, Insightful

    This makes an interesting counterpoint to an article from last week about an editorial by Sheldon Pacotti, one of the designers of Deus Ex. Rees seems to think self-censorship is the best defense, while Pacotti thinks it's best to spread the knowledge far and wide, so that everybody has the information necessary to devise defenses against technological threats.

    TheFrood

    --
    If you say "I'll probably get modded down for this..." then I will mod you down.
  9. if this sort of 'logic' had prevailed... by WegianWarrior · · Score: 4, Insightful

    ...we would still be living in caves. Seriously, because some things may lead to something which could be warped to 'bad' uses, we should halt the progress of science?

    Knowledge on it's own can not be defined as 'good' or 'bad' - it just is. It is what we use the knowledge for that can be judged on a moral level. And what some people consider to be a 'good' use, other people may see as 'bad' or even 'evil' use of the knowledge.

    --
    Everything in the world is controlled by a small, evil group to which, unfortunately, no one you know belongs.
    1. Re:if this sort of 'logic' had prevailed... by praedor · · Score: 3, Insightful

      The grey goo nonsense is overblown and a nonissue. If this sort of calamity were possible, then it would have already happened in nature because some form of bacteria would have done it by now. THEY are capable of breaking down rock and other materials into building blocks to replicate themselves. THEY are autonomous and have their own energy supply.


      Do a bit more research and you will find that there are solid arguments deconstructing the grey goo goobledigook and makes it go away.


      Nuke research can lead to bombs that can kill most humans and other life on the planet, in theory (though not in practice). But it also leads to medical research that we all depend on. It leads to a nice way to generate power. It leads to deep space probes. It leads to the solving of crystal structures in structural biology. It leads to improvements in materials research.


      All that good stuff isn't enough, however, to make up for the fact that you can make a juicy bomb too so we should never have gone down that path - and we wouldn't have all I mention above, nor would we have anything close to the understanding of the atomic world that we currently have.


      --
      In Bushworld, they struggle to keep church and state separate in Iraq as they increasingly merge the two in America.
  10. Science is supposed to be the search for truth by tempestdata · · Score: 3, Interesting

    People like Einstein dedicated their entire lives to find truth. Find, "The answer". So what's the matter? Can't handle the truth?

    There shouldn't be any kind of censorship in this quest for knowledge, and this need to understand. I know I'm sounding like I've mixed philosophy with science, but lets not forget that science is an offshoot of philosophy.

    So, just becasue some knowledge may potentially be dangerous, doesn't mean its knowledge we shouldn't pursue. That's like saying "you shouldn't learn how to use a gun, just because you might use a gun to kill someone!"

    --
    - Tempestdata
    1. Re:Science is supposed to be the search for truth by deke_2503 · · Score: 3, Insightful
      Sure, killing someone with a gun is bad. But is it as bad as ANNIHILATING THE ENTIRE PLANET just so that you can figure out this whole black hole concept that's eluding physicists? Have some foresight.

      Sure, I can handle the truth, but I don't have much use for it after I have been reduced to subatomic particles in the quest to find it.

  11. Maybe I see globalism in everything, but... by mcworksbio · · Score: 3, Insightful

    "No decision to go ahead with an experiment... should be made unless the general public is satisfied..." An interesting question is not simply the scientific realities of dooms-day science but the implied obligation of all people to the worldwide community. It seems as the years pass we get closer to having a serious discussion, as citizens of our individual nations, as to whether our responsibilities lie with our own flag or a "global" identity.

  12. How about.. by composer777 · · Score: 5, Interesting

    addressing the grievances that might cause a certain group to use technology to do harm? Or am I supposed to believe that we are the only rational ones and the rest of the world is full of savages that need to be tamed? Our viewpoint of other countries sounds alot like present day colonialism if you ask me.

    Here's some food for thought. If we don't address these grievances, then how can Rees so arrogantly believe that his book is going to make a bit of difference? Does he think that they are incapable of research? Does he think that they are going to say," Gee, Rees wrote a book, maybe we shouldn't use this technology or do our own research." It might slow terrorism down, but it's a stupid price to pay. It will only delay the inevitable UNLESS we address the problems rather than dropping bombs. The only thing that his proposal might do is further along the police state mentality that seems to be moving along quite well here in the US. He certainly won't stop terrorism.

  13. If Science is Outlawed by spun · · Score: 5, Insightful

    Only outlaws will have science. By restricting access to certain types of research, we limit knowledge in those fields, making it more likely that we will not be able to discover antidotes to technological mishaps. Will it reduce the chance of those mishaps? I doubt it. If the process of scientific discovery was exact and well known, perhaps, but simply limiting information won't stop progress. Who knows where crucial breakthroughs in, say, nanotechnology will come from? If we limit access to scientific knowledge off all fields that might lead to the development of "grey goo" we will stagnate, and won't garauntee that "grey goo" won't get made. All we will garauntee is that we won't know how to fight it if it does get made.

    Maybe if we did away with the massive iniequalities that fuel destructive behavior we won't need to limit access to knowledge, because no one will have any reason to destroy. There may still be accidents, but limiting access to information because of possible accidents is like the proverbial ostrich sticking its head in the sand to escape detection. Just because the ostrich doesn't see the lion sneaking up on him doesn't mean he isn't about to become lunch.

    --
    - None can love freedom heartily, but good men; the rest love not freedom, but license. -- John Milton
  14. Oh no, more Grey Goo worries! by Saige · · Score: 5, Insightful

    I am really getting frustrated by the amount of traction the whole "grey goo" meme is getting.

    Sure, it's possible that when nanotechnology gets going, that somehow a nanomachine that can convert just about any material to energy and raw materials to copy itself could be accidentally created. It could then convert the entire Earth and everything on it to copies of itself. It's POSSIBLE.

    But then again, it's also possible that some species of bacteria could mutate and start doing the same things. And it's probably not any less likely than a nanomachine doing it.

    A machine that could convert just about anything on the planet into useful materials, and duplicate itself endlessly, would probably be difficult to make INTENTIONALLY, let alone accidentally. It would also be extremely easy to insert safeguards to prevent anything like that from happening. Either require the presence of a particular molecule for the machines to duplicate themselves. Add replication limits to the nanomachines. Never include self-replication in the same nanomachine as one that can break down most/all things into raw materials.

    Unless nanoengineers are incredibly sloppy, maliciously so, then it's not going to happen by accident.

    INTENTIONAL creation of such machines is an issue of higher importance. And the type of people who would make such nanomachines are not the type who are going to listen to people saying "we can't research/develop this technology, it might be dangerous". Would a law against using aircraft for suicidal terrorism have stopped Al Queda from taking down the WTC? Nope.

    The best chance at preventing/defending against such actions is to develop the technology and focus some research on using it to prevent such uses. Not saying "stop all research!"

    Now, I would be enormously in favor of a global treaty banning research into nanotechnological weapons. The thought of militaries working with such technologies does scare me.

    --
    "You know your god is man-made when he hates all the same people you do."
  15. Not the answer. by SatanicPuppy · · Score: 3, Insightful

    So, what he's saying is, "We could find lots of horrible and dangerous things if we keep researching in this direction, so we shouldn't do it."

    What that actually means is, "Since we actually have the kind of restriant not to use this stuff, let's let someone with less restraint come up with it first."

    When Einstein gave the US his aid in building an atomic weapon he did it on the principle that someone would discover it, and that it was MUCH better that it be us, than the Nazis. It's much better that we know, and can prepare, than it is for us to be caught flat footed by something so awful we didn't even let ourselves think about it.

    --
    ad logicam Claiming a proposition is false because it was presented as the conclusion of a fallacious argument.
    1. Re:Not the answer. by Xerithane · · Score: 4, Interesting

      When Einstein gave the US his aid in building an atomic weapon he did it on the principle that someone would discover it, and that it was MUCH better that it be us, than the Nazis. It's much better that we know, and can prepare, than it is for us to be caught flat footed by something so awful we didn't even let ourselves think about it.

      It's wrong that Einstein worked on the bomb. His only involvment (as pointed out already) was writing a letter, that got dismissed, to Roosevelt. Einstein at the time was not liked, because of his roots. He was virtually exiled to the United States, because England didn't want him.

      Also, that the reason why the Germans didn't have a nuclear bomb is because the allied forces destroyed (after a first failed mission) the heavy water factory in Switzerland (I think it was in Switzerland, not 100% sure) that was fundamental to the bomb design. Hindenberg was also much further along than the Allies, by years. The reason why Hindenberg was so slow in his development is because he was a practical physicist, and not theoretical, and thereby couldn't construct the most efficient shape for a sustained reaction.

      Hindenbergs devices failed to reach critical mass, but they were very close, and had the Allied forces not resorted to sabotage, would have achieved it long before the Allies did.

      The reason why Einstein wrote that letter is because he knew, logically, the Germans were developing the technology.

      I think that the moral of the story is develop the technology first, as soon as you can, then create policy after realizing nobody should have that power. You can never know who is developing what, so it's better to develop everything.

      The Arms Race is constantly ongoing, so is the Space Race, and all that jazz.

      As I mentioned earlier in the thread, this boils down to, "Just because you can, doesn't mean you should." In regards to science, you always should, so you can protect yourself if someone else does.

      --
      Dacels Jewelers can't be trusted.
  16. or vice-versa by DenOfEarth · · Score: 4, Interesting
    I find it hard to believe that it will ever be possible to totally stop the entire human race from pursuing research into certain fields. If there's something to be learned, we'll learn it; if there's something to figure out, we'll figure it out, or die trying (probably not the best cliche to use, but oh well). I just have two points, a practical one, and a nihilist one.

    my problem with the point of view being taken by this prominent scientist is that he views all scientific propositions as risky, and there should be some generally agreed upon allowable risk threshold that any experiment should be considered against before it is carried out. The unfortunate thing about this point of view is that it doesn't take into account the potential benefits that could come out of it. Nano-bots destroying cencerous cells would truely make the fact that we live longer and longer much more worthwhile, if those extra years are cancer free, in my opinion. It is probably more worthwhile than creating blckholes on earth, even though the risks might be somewhere in the same range of dangerousness.

    my second point, the nihilist one, is in regards to the 'gray goo' that nanotech could turn the planet into. could I stipulate that some sort of evolution could continue, but instead of carbon based cellular processes being the basis, the nanobots would be instead. just a thought.

  17. Astronomer. Figures by wowbagger · · Score: 4, Insightful

    I find it interesting that this man is an astronomer. I guess he figures that his particular branch of science will never be considered "dangerous" and need to be "limited", unlike those other blighters in physics.

    1. Re:Astronomer. Figures by JetJaguar · · Score: 4, Insightful
      That's not even remotely true. Astronomy would be greatly curtailed by this as well. A large portion of current astronomy relies very heavily on results from high energy physics, particularly cosmology.

      Stopping research in high energy physics would cripple research projects dealing with supernovae, cosmology, supermassive black holes, even cosmic ray research (and its affect on star formation) would likely be affected. And that's before we even start getting into the newer fields, like astrobiology.

      --

      Shop Smart, Shop S-mart!

  18. Remember this famous quote by Anonymous Coward · · Score: 3, Funny

    Words to consider before this head-long rush into self-censorship:

    In Germany I first came for the Communists, and I didn't speak up because I wasn't a Communist.
    Then I came for the Jews, and I didn't speak up because I wasn't a Jew.
    Then I came for the trade unionists, and I didn't speak up because I wasn't a trade unionist.
    Then I came for the Catholics, and I didn't speak up because I was a Protestant.
    Then I came for me - and by that time I was the only one left in the room.

  19. There's nothing quite like RTFA... by WIAKywbfatw · · Score: 4, Informative

    If research is truly dangerous then classify it. But not to research it only leaves you behind when other nations research it.

    Hey, if you read the article then you would have understood Sir Martin Rees's reasons for recommending self-censorship. Here's a sample paragraph:

    "Some experiments could conceivably threaten the entire Earth," he writes. "How close to zero should the claimed risk be before such experiments are sanctioned?"

    He isn't talking about research that has potentially dangerous applications if it falls into the "wrong" hands, he's talking about potentially dangerous experiments. The kind of experiments where something going wrong could, say, create a minature black hole and thus destroy the planet.

    When you're talking about an experiment going that wrong then you don't really give a damn who's performing it, "them" or "us".

    --

    "Accept that some days you are the pigeon, and some days you are the statue." - David Brent, Wernham Hogg
    1. Re:There's nothing quite like RTFA... by Tackhead · · Score: 4, Insightful
      > Hey, if you read the article then you would have understood Sir Martin Rees's reasons for recommending self-censorship. Here's a sample paragraph:
      >
      > "Some experiments could conceivably threaten the entire Earth," he writes. "How close to zero should the claimed risk be before such experiments are sanctioned?"
      >
      > He isn't talking about research that has potentially dangerous applications if it falls into the "wrong" hands, he's talking about potentially dangerous experiments. The kind of experiments where something going wrong could, say, create a minature black hole and thus destroy the planet.
      >
      > When you're talking about an experiment going that wrong then you don't really give a damn who's performing it, "them" or "us".

      Hey, if you look at cave paintings then you would grok Shaman Roa's big think for banish Caveman Og:

      "Og's big fire think scary. Fire could burninate entire grassland where tribe hunt all meat things", Roa speak. "Fire come from Gods, not tribe! Roa know Gods, Roa eat happy mushrooms, talk to Gods every day! Og not talk to Gods, he too busy with fire think. Roa not want Og make Gods angry with two stick rubbing thing! Tell Og put sticks down!"

      Og's fire think not scary-but-good because fire keep tigers away at night. What if Gods angry, make Og drop fire? Og burninate all grass! No grass, no antelope, no fruit! Whole world burninate! Like three rainy season ago when Gods sent fire from sky, burninated grassland! Half of tribe starve!

      Og's fire think bad. Roa know! If Og not care what Roa think, Shaman Roa say send Og away forever!

  20. Re:Latest US Government cover-ups and lies by -jaded- · · Score: 5, Insightful

    Isn't it funny how the US military conveniently forgets Vietnam whenever it wants to? Agent Orange any one?


    If memory serves, Agent Orange was a defoliant and not a chemical weapon. It's kind of like complaining about the Orkin man using chemical weapons: technically true but not really what is meant by a chemical weapon. Sure there were probably people in the jungles that were defoliated but its not anything like dropping a nice efficient nerve agent.

    I'm really curious about how long it's going to take people to accuse the US military of chemical warfare because so many people are dying of lead poisoning.

    --
    -jaded- walking the earth as a living corpse is in somewhat questionable taste
  21. Re:Hindenberg by zCyl · · Score: 3, Funny

    It has also been suggested that Hindenberg was himself 'sabotaging' his own efforts.

    Other historians have also suggested that his name may have been "Heisenberg".

  22. time to debunk the black hole myth again by kilonad · · Score: 3, Interesting

    "It could form a black hole -- an object with such immense gravitational pull that nothing could escape, not even light -- which would suck in everything around it."

    I realize this isn't from you, it's from the article, but the rest of slashdot needs to realize this.

    Suppose for a moment that you could replace the sun with a black hole of identical mass. Guess what would happen? Nope, we wouldn't get sucked in. It'd get dark, we'd probably be bathed in some pretty nasty radiation, but we'd still have exactly the same orbit.

    Now suppose for a moment that we can warp the laws of physics enough to create an extremely small black hole, on the order of a few grams maybe (more like nano or picograms or smaller if it's in a particle accelerator). It would be a nasty little thing that wouldn't exist very long because there's no way to pump enough energy or matter into it fast enough to sustain it.

    Basically, it only has "such immense gravitational pull" within its event horizon, and you need at least a couple solar masses to make a black hole. Last time I checked we didn't have that kind of mass just laying around. As for the strangelet, perhaps I don't have the understanding necessary to see how it could "infect" surrounding matter and compress the whole planet into something smaller than a football stadium. I mean it's not like it's SARS or anything. It's like he's saying "let's take the craziest, kookiest possibilities quantum physics has come up with, and assume they all happen in the worst possible way, etc."

    Sixty years ago they were afraid that testing an atomic bomb might rip the entire planet apart, but went ahead with it anyway. They were some pretty smart people. Let's follow their lead.

  23. Gamma Ray Bursts? by ggwood · · Score: 4, Funny

    Perhaps that is the origin of gamma ray bursts: civilizations turning their planets into 100 meter diameter spheres with really powerful particle accelerators.

    Sure it's massively unlikely, but it would explain why we SETI hasn't heard anything yet.

    Imagine if the first signal we decode is: "don't build a particle accelerator larger than 5 kilometers in diameter or you will destroy your whole world."

    --
    a war on terrorism? How can we end a war on a method?
  24. Times when this might be relevant by jesterzog · · Score: 3, Insightful

    So far there seem to have been a lot of replies complaining that it's silly to abandon research of dangerous topics, because if it's ignored then someone much worse will discover it first. I agree with this almost completely, but I think there are also times when it makes sense once a threshold has been reached where making things worse gains no strategic advantage.

    The one I was thinking of was thermonuclear war. Before he died in 1996, Carl Sagan argued in The Demon Haunted World (and probably other places) that the development of the Hydrogen Bomb by the US was strategically pointless, because it didn't accomplish or deter anything that couldn't already be accomplished or deterred by existing nuclear weapons. On the other hand instead of simply destroying an enemy, a thermonuclear war would induce a nuclear winter and wipe out most of the world. Furthermore, there wasn't any intelligence that the USSR was developing it, nor that they would have if the USA hadn't started.

    Apart from that I'm not familiar with the whole situation, so I won't go into it further. But I don't think the argument that it's necessary to research ultra-dangerous topics before an enemy does holds up all the time -- especially when the only advance from existing technology is that it leads to a lose-lose scenario instead of a win-lose scenario.

  25. Re:Latest US Government cover-ups and lies by mdxi · · Score: 4, Interesting

    Yes, Agent Orange was an herbicide. But did you know that it wasn't the only one used? Many herbicides were used in the Vietnam conflict, their names coming from colored stripes on their containers. In addition to Orange, there were Agents Blue, Pink, Purple, and White. Once upon a time I had a chart of the effects of these chemicals, because they all had different actions. Agent Orange was a fairly standard defoliant: it made plants lose their leaves and die. The only other one I can remember is White, which made plants go into "growth overdrive" and explode themselves, bringing about disease, rot, and death.

    We had a lot of "innovative" weaponry in that era, like the Agents and a personal favorite of mine, antipersonnel mines loaded with slow-burning phosphorus/magnesium pellets instead of steel shrapnel. There were reports of the wounds of victims, who could take days to die, glowing sickly in the night.

    Lovely stuff.

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  26. did you read the article?? by lonevoice · · Score: 3, Insightful

    not to draw flame on myself, but....
    for once, there's virtually no rational comment to the article (at least out of the top-modded ones).

    The point of Rees's statement is not that we must beware of developing a horribly powerful weapon. The point is that in the course of regular experimentation a horrible tragedy can occur. It is not that US must develop the BHM (black hole missile (tm)) before Syria, cause then they'll destroy the world, cause after all, they're bad guys that have black hate in their veins. The danger is that the black hole can happen *accidentally*. Thus, the argument "better us than them" is pointless. It is in no way mitigated by the fact that us refraining from destroying the world doesn't prevent others from doing it.

    How real are the dangers of accidentally destroying the universe? If a top british physicist says they're real, i believe him. Virile nanobots? probably not, but its just an example, really.

    Can self-sensure achieve desired goal? to some extent, you bet. No "underground organization" is going to build a particle accelerator for high energy physics. This stuff doesn't appear out of thin air, it takes BIG BUCKS. True, some doomsday methods are within easier reach (bio weapons in particular) But at least some of the more dangerous experiments can be avoided.

    I repeat, "let's make a black hole before they do!" does not make sense/is not applicable.
    Rationality shouldn't be abandoned, even in science. The hope may be faint (i think his 50-50 prognosis is optimistic) but its no reason not to try or to disparage the messenger.

  27. Re:Latest US Government cover-ups and lies by budgenator · · Score: 3, Informative

    actualy the term depleted in this case means that the fissile U235 and Pu239 has been extracted, leaving only the non-fissile U233. In lay terms you can't use it for nuclear fuel, that's all. Any toxicity inherent in uranium is still present. We use it in anti-tank cannons because the stuff is much better at punching through thin armor than the much lighter lead w/ tungston core AP rounds do.

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