Dear Sir /
Madam

If it would be interesting for you to learn,

1) why the signals of Extraterrestrial Civilizations have not been
still detected ("the Great Silence of Cosmos") [A.2( see Article 2),
the commentaries - below ];

2) why the electromagnetic waves radiated by our brain and
carrying a definite information (e.g. telepathic) have not been still
detected [A.2];

3) why in the band (of frequencies) much less than 1 hertz one
can transmit information at a speed much more than 1 bit in a second
if one use a so-called "non-linear" ("inversely proportional")
frequency modulation of signals, and, thus, in the band of only one
working radio station one can easily place - all wireless stations of
the world! [A.2];

4) what kind of signals radiate living creatures which are not
detected with up-to-date physical devices, are protected excellently
from any noises, go through any obstacles, and are received reliably
in any point of the Earth [A.2];

On Mar 27, 3:56 am, unique_ wrote:

Because we don't know what to look for exactly. An alien civilization
could be using any of a zillion frequencies for their transmissions.
Or may not use radio at all. Radio isn't the best form of
communication over galactic distances anyway. The signals lose
strength and become destorted, blending in with background noise of
the universe. But for now it's all we have.