Bringing this thread back to the original subject, I am currently reading "Lonely Planets" by David Grinspoon which covers all aspects of astrobiology including Fermi's Paradox. I recommend it.
Bruno, you mentioned a few days ago that encryption or compression was an interesting thought, but you weren't sure if all aliens would try to avoid having us detect them. I think any advanced society would use a highly efficient encryption and/or compression system in their communications regardless of whether they thought the communication would be detected by someone else. Most data uploaded and downloaded over the internet is compressed, and it only stands to reason more advanced technology would allow far more data transmission through advanced compression techniques. Therefore, I don't suspect we will intercept alien radio signals anytime soon unless the aliens are intentionally trying to signal us. Also, I highly doubt that radio telescopes are the ultimate form of communication in the universe. It seems almost impossible to imagine that we would go from deliver information via a man on a horse to the final ultimate communication method in less than one century. Aliens may use laser pulses, or more likely, something we can not even imagine to communicate. As a final thought on this, I wanted to mention a theory of evolution that I read about a few years ago that invokes QM and the MWI to explain how the first self-replicator came to be against unimaginable odds. The idea was presented in "Quantum Evolution", written by Johnjoe McFadden, and (very generally summarizing here) basically argued that even given all the time that passed and all the opportunities that would have been provided on a global scale, the odds against a self-replicator forming are so staggeringly large that it is still difficult to explain through standard theory. He argues something along the lines that peptides formed in carbon microtubes that would have been sufficient to cut off the peptides from the outside world, prevent decoherence, and allow a superposition of the peptide. Then, when the peptide experienced decoherence, one in 20^32 universes would have a self-replicating peptide. Of course, invoking the anthropic principle, we are in one of those very rare universes. A consequence of this is that alien life would be pretty much nonexistent in OUR universe. Other planets suitable for life would have life in other branches of the multiverse, but the quantum selection effects would make the separate evolution of life in the same brach of the multiverse highly unlikely. Danny Mayes -----Original Message----- From: email@example.com [mailto:[EMAIL PROTECTED] On Behalf Of Bruno Marchal Sent: Saturday, July 08, 2006 9:59 AM To: firstname.lastname@example.org Subject: Re: Fermi's Paradox Brent, > Faith usually refers to some belief independent of evidence. I guess we have a serious problem of terminology. Faith without evidence is bad faith or perhaps better blind faith. I was meaning faith in truth. (Although faith in your 1-self works also in my setting). I cannot define "truth",(nor your 1-self) but I can argue that "faith in truth" leads to modesty, even in "religious" affair. I would say Fundamentalism is even a typical symptom of blind faith. It appears when, sometimes driven by despairing events, some people (collectively or privately) loose faith in truth, or in themselves, and then jumps on any populist herzats concocted by mad, ignorant, or dishonest entity. Bruno http://iridia.ulb.ac.be/~marchal/ --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Everything List" group. To post to this group, send email to email@example.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/everything-list -~----------~----~----~----~------~----~------~--~---