<?xml version='1.0' encoding='UTF-8'?><?xml-stylesheet href="http://www.blogger.com/styles/atom.css" type="text/css"?><feed xmlns='http://www.w3.org/2005/Atom' xmlns:openSearch='http://a9.com/-/spec/opensearchrss/1.0/'><id>tag:blogger.com,1999:blog-6753820.post8837363154041832446..comments</id><updated>2010-07-06T15:08:29.918-04:00</updated><title type='text'>Comments on Sentient Developments: The Drake Equation is obsolete</title><link rel='http://schemas.google.com/g/2005#feed' type='application/atom+xml' href='http://www.sentientdevelopments.com/feeds/8837363154041832446/comments/default'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default'/><link rel='alternate' type='text/html' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html'/><author><name>George</name><uri>http://www.blogger.com/profile/13003484633933455827</uri><email>george@sentientdevelopments.com</email></author><generator version='7.00' uri='http://www.blogger.com'>Blogger</generator><openSearch:totalResults>18</openSearch:totalResults><openSearch:startIndex>1</openSearch:startIndex><openSearch:itemsPerPage>25</openSearch:itemsPerPage><entry><id>tag:blogger.com,1999:blog-6753820.post-3006699220616369875</id><published>2010-07-06T14:03:32.214-04:00</published><updated>2010-07-06T14:03:32.214-04:00</updated><title type='text'>I think the most likely cause of post-singularity ...</title><content type='html'>I think the most likely cause of post-singularity civilizations not being explorers is not self-destruction, but some form of omphaloskepsis or simply disinterest.  Its likely that once a society understands all of physics and cosmology and biology that it finds such things unimportant for study.  Just as most biologists are not interested in doing life-histories of every species on the planet (understanding the overarching principles being enough), a post-singularity civilization might not be interested in studying other intelligences.  Singularitism suggests the elimination of culture, where societal motivations become so obvious to the overmind that free-will is irrelevant, courses of action and rules of behavior behave as mathematical constants rather than preferences.  As such, such a society would have no interest in foreign relations.</content><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/3006699220616369875'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/3006699220616369875'/><link rel='alternate' type='text/html' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html?showComment=1278439412214#c3006699220616369875' title=''/><author><name>Clayton</name><uri>http://www.blogger.com/profile/11046760989168154858</uri><email>noreply@blogger.com</email></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html' ref='tag:blogger.com,1999:blog-6753820.post-8837363154041832446' source='http://www.blogger.com/feeds/6753820/posts/default/8837363154041832446' type='text/html'/></entry><entry><id>tag:blogger.com,1999:blog-6753820.post-4573195679331061571</id><published>2009-06-16T14:45:50.654-04:00</published><updated>2009-06-16T14:45:50.654-04:00</updated><title type='text'>Derek, excellent write-up from a human 1.0 to a hu...</title><content type='html'>Derek, excellent write-up from a human 1.0 to a human 1.0 audience, it&amp;#39;s logical, and acceptable.  But I only wonder what a truly advanced civ might do, this is the part I&amp;#39;m having trouble with (ie. intrigued), I don&amp;#39;t think we are in a position to deduce or induce the realm of possibilities.&lt;br /&gt;Leonel</content><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/4573195679331061571'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/4573195679331061571'/><link rel='alternate' type='text/html' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html?showComment=1245177950654#c4573195679331061571' title=''/><author><name>leonel</name><uri>http://www.blogger.com/profile/17860267367094118140</uri><email>noreply@blogger.com</email></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html' ref='tag:blogger.com,1999:blog-6753820.post-8837363154041832446' source='http://www.blogger.com/feeds/6753820/posts/default/8837363154041832446' type='text/html'/></entry><entry><id>tag:blogger.com,1999:blog-6753820.post-4128236480050416822</id><published>2009-03-31T14:29:00.000-04:00</published><updated>2009-03-31T14:29:00.000-04:00</updated><title type='text'>Hi, All,The main problem with taking an infinite n...</title><content type='html'>Hi, All,&lt;BR/&gt;The main problem with taking an infinite number, (the number of stars in the universe) and taking smaller and smaller partsd of it, is that any nuber derived is also infinite.&lt;BR/&gt;So the problem with Drakes is not how few extraterrestrial civilisations are there? but as there are an infinite number of them, how do we avoid falling over them all the time?</content><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/4128236480050416822'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/4128236480050416822'/><link rel='alternate' type='text/html' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html?showComment=1238524140000#c4128236480050416822' title=''/><author><name>chessspy</name><uri>http://www.blogger.com/profile/02724399751948666124</uri><email>noreply@blogger.com</email></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html' ref='tag:blogger.com,1999:blog-6753820.post-8837363154041832446' source='http://www.blogger.com/feeds/6753820/posts/default/8837363154041832446' type='text/html'/></entry><entry><id>tag:blogger.com,1999:blog-6753820.post-5773498279332257209</id><published>2008-09-27T18:43:00.000-04:00</published><updated>2008-09-27T18:43:00.000-04:00</updated><title type='text'>I believe that there is life elsewhere in the univ...</title><content type='html'>I believe that there is life elsewhere in the universe; if those organisms are intelligent, I don't know. I think the Drake Equation is flawed because it does not include all factors that affect the formation civilizations. In fact, we don't really know everything that could have an effect on the evolution of societies, or life itself, for that matter. For example, what about natural disasters? Or wars between alien species?</content><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/5773498279332257209'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/5773498279332257209'/><link rel='alternate' type='text/html' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html?showComment=1222555380000#c5773498279332257209' title=''/><author><name>Anonymous</name><email>noreply@blogger.com</email></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html' ref='tag:blogger.com,1999:blog-6753820.post-8837363154041832446' source='http://www.blogger.com/feeds/6753820/posts/default/8837363154041832446' type='text/html'/></entry><entry><id>tag:blogger.com,1999:blog-6753820.post-4688506379556091056</id><published>2008-07-18T03:18:00.000-04:00</published><updated>2008-07-18T03:18:00.000-04:00</updated><title type='text'>the drake equation was never intended to be mathem...</title><content type='html'>&lt;I&gt;the drake equation was never intended to be mathematically accurate. Concieved during a time when the idea of believing in the possibility intelligent life elsewhere in the universe wasn't taken seriously, the drake equation served as a useful device for arguing that given the size and scale of the universe, the idea that life is unique to earth is unlikely.&lt;/I&gt;&lt;BR/&gt;&lt;BR/&gt;I'd have to agree.  Some people are taking DE too religiously.  It was never meant to be pi people.&lt;BR/&gt;&lt;BR/&gt;&lt;BR/&gt;&lt;I&gt;According to Judge, the coefficient L in Drake's equation is only about 1,100 years for Earth. A note added in proof to Cirkovic in Astrobiology 4, 225 (2004).&lt;/I&gt;&lt;BR/&gt;&lt;BR/&gt;Can somebody please elaborate on that last line?</content><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/4688506379556091056'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/4688506379556091056'/><link rel='alternate' type='text/html' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html?showComment=1216365480000#c4688506379556091056' title=''/><author><name>Carl's Haunted Turtleneck</name><email>noreply@blogger.com</email></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html' ref='tag:blogger.com,1999:blog-6753820.post-8837363154041832446' source='http://www.blogger.com/feeds/6753820/posts/default/8837363154041832446' type='text/html'/></entry><entry><id>tag:blogger.com,1999:blog-6753820.post-1313256688829167933</id><published>2007-11-26T11:22:00.000-05:00</published><updated>2007-11-26T11:22:00.000-05:00</updated><title type='text'>Mike Judge's film "Idiocracy" is usually on late n...</title><content type='html'>Mike Judge's film "Idiocracy" is usually on late night because the adult language is dense. Nonetheless, it is worth seeing because the film uses humor to make a valid but politically-incorrect point about the rapid conversion of intelligence to a maladaptive trait. According to Judge, the coefficient L in Drake's equation is only about 1,100 years for Earth. A note added in proof to Cirkovic in Astrobiology 4, 225 (2004).</content><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/1313256688829167933'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/1313256688829167933'/><link rel='alternate' type='text/html' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html?showComment=1196094120000#c1313256688829167933' title=''/><author><name>Allen</name><uri>www.cytodyn.com</uri><email>noreply@blogger.com</email></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html' ref='tag:blogger.com,1999:blog-6753820.post-8837363154041832446' source='http://www.blogger.com/feeds/6753820/posts/default/8837363154041832446' type='text/html'/></entry><entry><id>tag:blogger.com,1999:blog-6753820.post-5928321126835035524</id><published>2007-06-29T19:54:00.000-04:00</published><updated>2007-06-29T19:54:00.000-04:00</updated><title type='text'>Two observations:There's no reason to assume that ...</title><content type='html'>Two observations:&lt;BR/&gt;&lt;BR/&gt;There's no reason to assume that a post-Singularity civilisation should not also incluse a number of 'enthusiasts' willing to expend resources on self-replicating subsets of their civilisation.&lt;BR/&gt;&lt;BR/&gt;And, on the biological front, the current 'Goldilocks' paradigm is simply wrong - even Earth isn't really within Sol's Habitable Zone.</content><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/5928321126835035524'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/5928321126835035524'/><link rel='alternate' type='text/html' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html?showComment=1183161240000#c5928321126835035524' title=''/><author><name>Bob Shaw</name><email>noreply@blogger.com</email></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html' ref='tag:blogger.com,1999:blog-6753820.post-8837363154041832446' source='http://www.blogger.com/feeds/6753820/posts/default/8837363154041832446' type='text/html'/></entry><entry><id>tag:blogger.com,1999:blog-6753820.post-6202847171631650770</id><published>2007-06-05T11:12:00.000-04:00</published><updated>2007-06-05T11:12:00.000-04:00</updated><title type='text'>http://www.space.com/adastra/070531_adastra_et_art...</title><content type='html'>http://www.space.com/adastra/070531_adastra_et_art.html&lt;BR/&gt;&lt;BR/&gt;Art for E.T.'S Sake &lt;BR/&gt;&lt;BR/&gt;By Stuart Atkinson&lt;BR/&gt;&lt;BR/&gt;National Space Society&lt;BR/&gt;&lt;BR/&gt;posted: 31 May 2007&lt;BR/&gt;06:18 am ET&lt;BR/&gt; &lt;BR/&gt;For a long time there was an assumption in SETI circles that when Contact came it would be through the detection of an unambiguous radio signal, a clarion call from the depths of space that would be unmistakably alien. SETI scientists and enthusiasts alike maintained that an ET signal will be both simple and easy to identify as being extraterrestrial in nature. Now we realize it might not be that straightforward. ETs might be attempting communication via lasers, or holograms, or some other way we can't even imagine. We're looking for a needle in a haystack whilst wearing a blindfold and boxing gloves. &lt;BR/&gt;&lt;BR/&gt;&lt;BR/&gt;While the best case scenario would be for our first ET signal to be a Sputnik-like beeping from the depths of space, telling us how far we have to turn the galactic radio dial before we hear the clear tones of "Voice Of the Milky Way", it's more likely that the transmission will contain a LOT of information which will be hard to decode, especially if that information wasn't created and transmitted with the purpose of making contact, but 'leaked'. Earth leaks signals out into space all the time, and the radio ripples spreading away from us carry not only entertainment programs but documentary-style factual programs too. Wildlife documentaries, natural history features, gardening shows, cookery shows, sports events, all of them carrying a wealth of accurate information for any ETIs who stumble upon them. &lt;BR/&gt;&lt;BR/&gt;&lt;BR/&gt;Might alien civilizations be "leaking" too? If they are, then we should cross our fingers that there are ET equivalents of "National Geographic" specials heading towards us, packed with useful information, instead of their versions of "Big Brother". What a disaster that would be...&lt;BR/&gt;&lt;BR/&gt;&lt;BR/&gt;But what about programs concerning art? Art contains lots of confusing and conflicting signals. Art is subjective and very personal. And although many forms of art are self explanatory, realistic and easily interpreted, so-called modern art, with its geometrical patterns, chaotic curves, random patterns and psychedelic swirls and whorls of color, take some figuring out. &lt;BR/&gt;&lt;BR/&gt;&lt;BR/&gt;The odds against us stumbling across an ET episode of "Art Today" are ridiculously high, but not impossible. Perhaps a civilization might, after millennia spent refining its sciences, value art more highly, so highly they felt a desire to share their artistic achievements with the rest of the Galaxy, (and preserve them in the process too, of course). Such a civilization might broadcast the contents of their galleries, scattering them among the stars like confetti, distributing them like a cosmic form of "shareware"... &lt;BR/&gt;&lt;BR/&gt;&lt;BR/&gt;But one civilization's art could be mistaken by another for scientific images, graphical representations of scientific concepts, or illustrations from some advanced physics textbook, and vice versa. Would we recognize - and/or aesthetically appreciate - any incoming examples, whole or fragmented, of ET art? And it works both ways: what would an ETI make of Picasso's works, when only a very few of us here on Earth have a clue what they're meant to represent? And are we really sure that ETs will correctly interpret those pulsar maps on the sides of our Voyagers and Pioneers, or will they just think "Hmmm, interesting composition, but too abstract for me.."? &lt;BR/&gt;&lt;BR/&gt;&lt;BR/&gt;The nature of ET art will be dictated by their range of senses, their environment, their evolutionary path, psychology and physiology. Of course, they could create familiar-looking compositions and provide us with stunning landscapes and portraits of the living things they share their corner of the Galaxy with, but it's more likely that the art created by ETs might be so different to our own that it would be unrecognizable as art. What sort of art might a mechanical ET produce? Would they rejoice in perfect design, see beauty in purely functional forms and shapes, have only disdain for soft lines and subtle, soft colors? &lt;BR/&gt;&lt;BR/&gt;&lt;BR/&gt;Perhaps some ETs will be so advanced they might create art on a literally astronomical scale, manipulating astronomical objects or entire regions of space... &lt;BR/&gt;&lt;BR/&gt;&lt;BR/&gt;It seems to me that ETs centuries or even millennia ahead of us would have so much power and so much energy at their disposal that the lines between art and engineering would eventually become blurred. As their artists strove to produce bigger and better works, they would need increasingly larger "canvases" for their works. Think of the evolution of our own   art. Once we painted on cave walls, then discovered canvases, and how to sculpt stone. We then moved on to illuminating the sides of buildings with lasers and carving faces in mountainsides. Where next? Laser sculptures in the sky? Sculptures in Earth orbit? Images projected onto the Moon? &lt;BR/&gt;&lt;BR/&gt;&lt;BR/&gt;Now put yourself in the shoes of an artist a thousand, ten thousand years ahead. What canvas is big enough for your ambitions and imagination...? How about deliberately crashing asteroids or comets into gas giants to create exotic and wonderful patterns in their clouds, to be enjoyed by millions watching the show from across your solar system..? &lt;BR/&gt;&lt;BR/&gt;&lt;BR/&gt;Perhaps alien artists are painting with the very light of the stars themselves. Look at those breathtaking pictures of planetary nebulae taken by the Hubble Space Telescope, with all their multi-colored, intricately-structured shells, veils and curtains of starfire swirling around them. By interfering with the stars lurking inside such a nebula, maybe by dumping material on their surfaces, alien artists might be able to change the density and "gusts" of the solar wind shaping it, and in so doing manipulate the shape of the nebula into patterns and forms of their choosing. Would advanced civilizations be able to create epic-scale light-and-gas sculptures in this way? &lt;BR/&gt;&lt;BR/&gt;&lt;BR/&gt;Think about it. How many times have you looked at a Hubble image and thought "That's a work of art..."? &lt;BR/&gt;&lt;BR/&gt;&lt;BR/&gt;Maybe you were right.</content><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/6202847171631650770'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/6202847171631650770'/><link rel='alternate' type='text/html' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html?showComment=1181056320000#c6202847171631650770' title=''/><author><name>Anonymous</name><email>noreply@blogger.com</email></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html' ref='tag:blogger.com,1999:blog-6753820.post-8837363154041832446' source='http://www.blogger.com/feeds/6753820/posts/default/8837363154041832446' type='text/html'/></entry><entry><id>tag:blogger.com,1999:blog-6753820.post-5236785254594672084</id><published>2007-06-05T00:26:00.000-04:00</published><updated>2007-06-05T00:26:00.000-04:00</updated><title type='text'>Good post, I have to agree that the Drake Equation...</title><content type='html'>Good post, I have to agree that the Drake Equation is obsolete.  It really is kind of an intuitive thought dressed up in scientific terms.&lt;BR/&gt;&lt;BR/&gt;The galaxy is &lt;I&gt;so big&lt;/I&gt; that its just impossible we are the only intelligent life, right?  But the only real data we have is that life exists on one planet, certainly not enough data to base any serious statistical estimate on.&lt;BR/&gt;&lt;BR/&gt;The 'real' odds of intelligent life developing may be so low that its quite normal for only one instance to exist in a galaxy.</content><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/5236785254594672084'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/5236785254594672084'/><link rel='alternate' type='text/html' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html?showComment=1181017560000#c5236785254594672084' title=''/><author><name>Ryan</name><email>noreply@blogger.com</email></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html' ref='tag:blogger.com,1999:blog-6753820.post-8837363154041832446' source='http://www.blogger.com/feeds/6753820/posts/default/8837363154041832446' type='text/html'/></entry><entry><id>tag:blogger.com,1999:blog-6753820.post-8334760659652212506</id><published>2007-06-03T10:55:00.000-04:00</published><updated>2007-06-03T10:55:00.000-04:00</updated><title type='text'>Not directly related to Drake, but certainly of no...</title><content type='html'>Not directly related to Drake, but certainly of note concerning Fermi's and Von Neumann (from Wikipedia):&lt;BR/&gt;&lt;BR/&gt;"Another objection to the prevalence of Von Neumann probes is that civilizations of the type that could potentially create such devices may have inherently short lifetimes, and self-destruct before so advanced a stage is reached, through such events as biological or nuclear warfare, nanoterrorism, resource exhaustion, ecological catastrophe, pandemics due to antibiotic resistance, etcetera."&lt;BR/&gt;&lt;BR/&gt;Which also speaks to that as-yet discovered physical law I brought up in an earlier comment...</content><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/8334760659652212506'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/8334760659652212506'/><link rel='alternate' type='text/html' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html?showComment=1180882500000#c8334760659652212506' title=''/><author><name>casey</name><uri>http://thecontrarian.typepad.com</uri><email>noreply@blogger.com</email></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html' ref='tag:blogger.com,1999:blog-6753820.post-8837363154041832446' source='http://www.blogger.com/feeds/6753820/posts/default/8837363154041832446' type='text/html'/></entry><entry><id>tag:blogger.com,1999:blog-6753820.post-2141733965488933582</id><published>2007-06-02T03:02:00.000-04:00</published><updated>2007-06-02T03:02:00.000-04:00</updated><title type='text'>Nicely stated..walt_williams@setv.org</title><content type='html'>Nicely stated..&lt;BR/&gt;&lt;BR/&gt;walt_williams@setv.org</content><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/2141733965488933582'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/2141733965488933582'/><link rel='alternate' type='text/html' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html?showComment=1180767720000#c2141733965488933582' title=''/><author><name>walt_williams@setv.org</name><uri>http://www.setv.org</uri><email>noreply@blogger.com</email></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html' ref='tag:blogger.com,1999:blog-6753820.post-8837363154041832446' source='http://www.blogger.com/feeds/6753820/posts/default/8837363154041832446' type='text/html'/></entry><entry><id>tag:blogger.com,1999:blog-6753820.post-5867784165171041054</id><published>2007-06-01T15:06:00.000-04:00</published><updated>2007-06-01T15:06:00.000-04:00</updated><title type='text'>Great post, George, even if there's a few aspects ...</title><content type='html'>Great post, George, even if there's a few aspects where I disagree. &lt;BR/&gt;&lt;BR/&gt;You wrote, "The Galaxy's extreme age and the potential for intelligence to have emerged at disparate points in time leaves an absurdly narrow window for detecting radio signals."&lt;BR/&gt;&lt;BR/&gt;This is a common criticism, and one I think is mistaken for a number of reasons. The kinds of signals SETI is searching for are intentional beacons meant to reach early technological societies. This is why SETI is focused on draining the so-called 'Water Hole', the relatively quiet slice of the electromagnetic spectrum between the radio spikes of H and HO. If there are other H20-based civilizations out there, the Water Hole is a reasonable and obvious place to exchange information. &lt;BR/&gt;&lt;BR/&gt;In essence, we're checking the mailbox to see if someone's left us a letter -- a letter addressed to us using a specific radio frequency. The search for the letter has nothing to do with the technologies the sending civilization uses for their own communications. They would be using radio for our convenience, not theirs.&lt;BR/&gt;&lt;BR/&gt;That said, the larger point you make is true. SETI orthodoxy has not honestly grappled with data received since the '60s. Sagan's dream of a chattering galactic civilization waiting for us to wake up and notice it is no longer credible. The shaggy dog stories the predominant SETI community has resorted to in order to avoid facing change may be impeding better work regarding ETI and a fuller understanding of our place in the universe.&lt;BR/&gt;&lt;BR/&gt;One reason the Drake Equation has always seemed misguided to me is that a &lt;A HREF="http://en.wikipedia.org/wiki/Bracewell_probe" REL="nofollow"&gt;Bracewell-style&lt;/A&gt; program using von Neumann probes should provide us with ample evidence of ETI even if only one civilization in the universe achieves it. In my opinion, the lack of evidence of this sort is profoundly damning of the "optimistic" position. ETI may be extremely rare, or distant, or violatile, or all three. If so, we ought to be considering the possibility of initiating such a program for ourselves, before it's too late.</content><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/5867784165171041054'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/5867784165171041054'/><link rel='alternate' type='text/html' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html?showComment=1180724760000#c5867784165171041054' title=''/><author><name>Dan</name><uri>http://www.blogger.com/profile/01341890452806688194</uri><email>noreply@blogger.com</email></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html' ref='tag:blogger.com,1999:blog-6753820.post-8837363154041832446' source='http://www.blogger.com/feeds/6753820/posts/default/8837363154041832446' type='text/html'/></entry><entry><id>tag:blogger.com,1999:blog-6753820.post-6051536313546029826</id><published>2007-06-01T12:48:00.000-04:00</published><updated>2007-06-01T12:48:00.000-04:00</updated><title type='text'>Perhaps advanced life has learned discretion.</title><content type='html'>Perhaps advanced life has learned discretion.</content><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/6051536313546029826'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/6051536313546029826'/><link rel='alternate' type='text/html' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html?showComment=1180716480000#c6051536313546029826' title=''/><author><name>Walt Guyll</name><uri>baloney.com</uri><email>noreply@blogger.com</email></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html' ref='tag:blogger.com,1999:blog-6753820.post-8837363154041832446' source='http://www.blogger.com/feeds/6753820/posts/default/8837363154041832446' type='text/html'/></entry><entry><id>tag:blogger.com,1999:blog-6753820.post-1985742301511720827</id><published>2007-06-01T09:59:00.000-04:00</published><updated>2007-06-01T09:59:00.000-04:00</updated><title type='text'>thanks for the post, George. Yes, of course DE is ...</title><content type='html'>thanks for the post, George. Yes, of course DE is obsolete - Rob Bradbury and I tried to bring as many of the reasons in our New Ast. paper, and there are some more. However, the mainstream SETI community is unlikely to take these seriously enough at present. There is much of intellectual laziness and inertia there. And the things are not helped very much by many open-minded people who speculate too much on the rather nebulous alien sociology without previously learning all the necessary astrophysics and astrobiology, with some bits of evolutionary biology and comp. science... But we need to disseminate such ideas as widely as possible - so, thanks again for the good work.</content><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/1985742301511720827'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/1985742301511720827'/><link rel='alternate' type='text/html' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html?showComment=1180706340000#c1985742301511720827' title=''/><author><name>Milan M. Cirkovic</name><uri>http://www.aob.bg.ac.yu/~mcirkovic</uri><email>noreply@blogger.com</email></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html' ref='tag:blogger.com,1999:blog-6753820.post-8837363154041832446' source='http://www.blogger.com/feeds/6753820/posts/default/8837363154041832446' type='text/html'/></entry><entry><id>tag:blogger.com,1999:blog-6753820.post-2969448625519606742</id><published>2007-06-01T09:30:00.000-04:00</published><updated>2007-06-01T09:30:00.000-04:00</updated><title type='text'>the drake equation was never intended to be mathem...</title><content type='html'>the drake equation was never intended to be mathematically accurate. Concieved during a time when the idea of believing in the possibility intelligent life elsewhere in the universe wasn't taken seriously, the drake equation served as a useful device for arguing that given the size and scale of the universe, the idea that life is unique to arth is unlikely.</content><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/2969448625519606742'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/2969448625519606742'/><link rel='alternate' type='text/html' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html?showComment=1180704600000#c2969448625519606742' title=''/><author><name>Anonymous</name><email>noreply@blogger.com</email></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html' ref='tag:blogger.com,1999:blog-6753820.post-8837363154041832446' source='http://www.blogger.com/feeds/6753820/posts/default/8837363154041832446' type='text/html'/></entry><entry><id>tag:blogger.com,1999:blog-6753820.post-4104944475090330825</id><published>2007-05-31T18:17:00.000-04:00</published><updated>2007-05-31T18:17:00.000-04:00</updated><title type='text'>Derek, you just blew my tiny mammal mind.</title><content type='html'>Derek, you just blew my tiny mammal mind.</content><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/4104944475090330825'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/4104944475090330825'/><link rel='alternate' type='text/html' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html?showComment=1180649820000#c4104944475090330825' title=''/><author><name>casey</name><uri>http://thecontrarian.typepad.com</uri><email>noreply@blogger.com</email></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html' ref='tag:blogger.com,1999:blog-6753820.post-8837363154041832446' source='http://www.blogger.com/feeds/6753820/posts/default/8837363154041832446' type='text/html'/></entry><entry><id>tag:blogger.com,1999:blog-6753820.post-5406855874097772756</id><published>2007-05-31T16:42:00.000-04:00</published><updated>2007-05-31T16:42:00.000-04:00</updated><title type='text'>Even when I was a boy, first encountering the Drak...</title><content type='html'>Even when I was a boy, first encountering the Drake Equation in...I believe it was Sagan's &lt;I&gt;Cosmos&lt;/I&gt; (the illustrated book, not the film series, which I finally saw years later), I thought the equation was complete bullshit. At &lt;I&gt;best&lt;/I&gt; it could never do more than cough up an INCREDIBLY rough estimate of the number of civilizations which become either spacefaring or actively interested in long-distance radio contact. And really...how likely is that?&lt;BR/&gt;&lt;BR/&gt;I tend to agree with Charles Stross'/Michael Anissimov's idea that post-Singular civilizations do not travel due to bandwidth restrictions inherent in the speed of light. After all, once one has established a perfectly good computronium base to support a stable ultra-high-speed civilization of uploads/digital intelligence, what is the point of wasting matter which could be put to better use in Matrioshka brains, etc., by building space probes or even Von Neumann devices? What need would an Accelerated civilization have for "colonizing" nearby stars? Chances are, due to the VAST amount of perceptual time elapsed between the departure a VN seed device from Sol and it's arrival at, say, Tau Ceti, the "seed civilization" would be hopelessly out-of-date...untold billions of upgrades/versions behind the parent. What would be the point of the Solar parent civilization in contacting them? It would be like phoning back in time to talk to your Neanderthal ancestors.&lt;BR/&gt;&lt;BR/&gt;If a post-Singular civilization has any interest in space, it can easily build massive telescopes to study the Galaxy/Universe around it without having to leave home. After all, we Human 1.0s have never left Earth, and even with our comparatively small optics and other EM-spectrum devices we've managed to observe (and deduce therefrom) a LOT. No doubt a post-Singular civilization would do the same.&lt;BR/&gt;&lt;BR/&gt;The ONLY reasons I can see for a post-Singular civ launching an interstellar effort would be to 1) find a new star to help power them now that their original star is running out of steam; or 2) make a "backup" in case of disaster. But again, chances are a post-Singular civilization will never be 100% dependent on solar radiation to power themselves, and even if they initially are, it's a safe bet they'll sooner or later develop &lt;I&gt;some&lt;/I&gt; newer and, probably, better means of powering themselves (sucking energy right out of the false vacuum, for instance).&lt;BR/&gt;&lt;BR/&gt;Nonetheless, it's also strange to think of advanced digital civilizations having any interest whatsoever in contact organics or even other digital civilizations. Why? Because signal lag between two widely-separated stars makes "communication" impossible in all but the most rudimentary sense. We organic Humans find the task of communication over even as little as 20ly to be a daunting, unlikeable situations; imagine what  a 20ly comm lag would be to a digital entity whose processor cycles a few million times per second?</content><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/5406855874097772756'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/5406855874097772756'/><link rel='alternate' type='text/html' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html?showComment=1180644120000#c5406855874097772756' title=''/><author><name>Derek C. F. Pegritz</name><uri>http://www.blogger.com/profile/09738953185576891007</uri><email>noreply@blogger.com</email></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html' ref='tag:blogger.com,1999:blog-6753820.post-8837363154041832446' source='http://www.blogger.com/feeds/6753820/posts/default/8837363154041832446' type='text/html'/></entry><entry><id>tag:blogger.com,1999:blog-6753820.post-307471723670682946</id><published>2007-05-31T14:51:00.000-04:00</published><updated>2007-05-31T14:51:00.000-04:00</updated><title type='text'>This is an amazing post — well written enough for ...</title><content type='html'>This is an amazing post — well written enough for me (a layman speculator) to slog through it. And the link to your previous entry, "When did Intelligent Life First Emerge," was equally informative.&lt;BR/&gt;&lt;BR/&gt;I seem to recall Kurzweil writing about an as-yet-unconfirmable principle similar to the Second Law of Thermodynamics in which built-in barriers prevent ANY intelligent civ from achieving Singularity. That would be even more depressing than Fermi's Paradox. Can anyone confirm? &lt;BR/&gt;&lt;BR/&gt;The idea of post-Singularity civs doing dimensional engineering could be the theoretical loophole to Fermi's. Unfortunately, like M-theory, it seems entirely speculative.</content><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/307471723670682946'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/6753820/8837363154041832446/comments/default/307471723670682946'/><link rel='alternate' type='text/html' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html?showComment=1180637460000#c307471723670682946' title=''/><author><name>casey</name><uri>http://thecontrarian.typepad.com</uri><email>noreply@blogger.com</email></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='http://www.sentientdevelopments.com/2007/05/drake-equation-is-obsolete.html' ref='tag:blogger.com,1999:blog-6753820.post-8837363154041832446' source='http://www.blogger.com/feeds/6753820/posts/default/8837363154041832446' type='text/html'/></entry></feed>