Other civilisations in the Galaxy - are they really that likely?

Just a note: means of transmissions, means of conveying information over them are two different things.Radio waves fill the universe, the question is whether information is conveyed with it.We are currently seeing the change in both tv and radio signals from analog to digital, and this results in a different "footprint" on the radio waves. I expect future changes as well.But what the future holds for radio usage is unpredictable -- except that the trend to condense the information as much as possible to provide enhanced reception and reduce errors will likely continue in much the same vein as the trend to increased computing power within ever smaller units.Future radio broadcasts could be bursts of information packets similar to the way information is conveyed over the internet.The likelyhood of path directed broadcasts is also something to consider: why waste energy broadcasting where there are no receivers?We also see a trend of direct cable linkage that is growing and replacing broadcast radio -- radio may only be an temporary means of communication.Then there are other possibilities:Information can be carried by lasers as well as radio waves, the limitation for our usage is the power needed to broadcast a light show versus using it as a beam of communication. (but see burst broadcast and directed broadcast above).Then there may be other wave systems that can be used to carry information.Physics talks about gravity waves, and we have shown that we can modify the waves of anything in the electromagnetic spectrum to carry information. What do the physics gurus think about using gravity waves for communication? Perhaps there would be less "interference" in those waves, so more advanced civilizations would use them (and using them may be the real "test" of advanced intelligence -- proof of mastering the physics and living to take advantage of it).Just my thoughts.ps -- here's an interesting short story on the fermi paradox issue:
http://www.davidbrin.com/lungfish1.html (enjoy)

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RebelAAmerican.Zen[Deist
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That would be one problem certainly -- from our current perspective eh?What other waves\systems could be used? Perhaps something from spooky action?

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RebelAAmerican.Zen[Deist
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interesting concept -- {civilization\culture\society} as a behavior mode that extends beyond {group} interactions. good for a new topic?

Aren't wormholes tied to string theories?

yes, I don't think there will be faster than SL communications, but maybe some way of riding an interference\connection .... yes, but there is also a lot of interference on the bands ... some other system may not be so cluttered so long distance \ low power can still be received. I'm ready

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RebelAAmerican.Zen[Deist
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Thanks. One of the reasons would be to have some eggs in different baskets. We know that an astronomically improbable event 'took out' the dinosaurs, so if we are concerned with the long term survival of the human species (and necessary earth life) then we need to look at off-planet solutions, and ultimately out-of-solar-system solutions.

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RebelAAmerican.Zen[Deist
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Exactly. You could also say the last one was a warning shot ...

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RebelAAmerican.Zen[Deist
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So that's where the 'others' went!

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RebelAAmerican.Zen[Deist
... to learn ... to think ... to live ... to laugh ...
to share.