(March 1, 2016 at 12:40 pm)Gawdzilla Wrote:(March 1, 2016 at 10:45 am)Aractus Wrote:
The problem though is that our universe should be "noisy" from all the other intelligent life and it isn't.
What communications system does a civilization ten thousand years in advance of our own use?
That, and the rate of diminution of the level of energy based on distance at a rate of about 1/R^2 is going to reduce the level of energy any receiver would pick up, at interstellar or intergalactic distances. Then, there is the actual transmission scheme. We had spark gap (Morse Code) in the beginning, and have progressed through several different types of schemes. If we all go to Digital Spread Spectrum, we'll probably disappear from the supposed alien's RF view. The energy is pretty spread out, and won't be picked up by any coherent receiver that doesn't have the decoding scheme...given that the signal isn't so attenuated already, at said receiver.
If you get to thinking you’re a person of some influence, try ordering somebody else’s dog around.
