Paradox: Where is ET?
2: They do exist, but we see no evidence
may be that technological extraterrestrial civilizations exist,
but that human beings cannot communicate with them because
of constraints: problems of scale or technology; because they
do not wish to communicate, or because their nature and technologies
are too alien for meaningful communication.
Communication is impossible due to problems of scale:
Intelligent civilizations are too far apart in space or time
It is technically too difficult, too expensive, or requires
too big resources
to spread physically throughout the galaxy.
Human beings have not been searching for E.T. long enough
Communication is impossible for technical reasons:
Humans are not listening in the right way - advanced aliens
may have totally different communication methods.
Civilizations only broadcast detectable radio signals for
a brief period of time
They experience a technological singularity and loose interest
technological civilizations don't need a physical body anymore,
they may loose interest in trying to talk with primitive "organisms"
like us, just like we don't bother to talk with ants. Or they
prefer to move into "virtual worlds" and cut off
all external communications.
The evidence is being suppressed by the governments here on
(so called conspiracy theories)
They aliens choose not to interact with us, because:
It is the nature of intelligent life to keep silent
is possible that most civilizations keep the listen-only ideology,
perhaps because they don't want to be found.
Earth is purposely isolated (the zoo hypothesis)
is possible that alien civilizations avoid contact with Earth
so as not to interfere with our independent development, or
to preserve an isolated "zoo" or "wilderness
area". A little like Star Trek's "Prime Directive".
Or the aliens might choose to only allow contact once the
human race has passed certain ethical, political, or technological
standards, e.g., ending poverty/war or being able to master
interstellar travel. That is, when we have come of age.
ideas is that Earth has been set up as a "laboratory"
experiment that contact would ruin. And a related, even more
exotic idea, is that the perceived universe is a simulated
reality. The "planetarium hypothesis" holds that
beings have simulated a universe for us that appears to be
empty of other complex life by design. Then, we live in a
virtual universe. (cont)