In summary, various methods have been used to search for extraterrestrial intelligence, including radio and optical SETI. Our attempts to communicate have been more limited. They are split into two types, electromagnetic messages and physical messages. Quantum Super luminal Communications is a new era for SETI.
There remains the problem of The Fermi Paradox which seeks to understand why we are not visited if there are other (older) civilisations. Whatever we think about extraterrestrial intelligence and the probability of its existence it may still be worth considering protocols for detection, just in case. So far we have no signal from an extraterrestrial intelligence.
Convergence evolution and QSC
The significance of convergence evolution of extra-terrestrial life and intelligence provides an opportunity for a new SETI approach for contact. An abundance of ETI civilisations is plausible now and new tools for contact can be applied. The inherent nature of Quantum Super Luminal communications (QSC) opens up the possibility for contact. However, QSC opens up challenges for both contactor and contacted in respect to applying real time
communications. In particular, after first contact, selecting the right protocols for socio cultural and language interpretation is vital to solve urgently. This scenario may also be challenging to sustain for a long duration in our relationship with an ET civilisation.
Convergent evolution is the phenomenon posited by numerous biologists and anthropologists of two or more species of widely different origins evolving extremely similar features in response to the same environmental opportunity. Intelligence and that of extraterrestrials with whom we might communicate are likely to have converged considerably and to converge further in the future. Much of this future convergence is likely to be artificial, i.e. assisted by technology.
Cosmic Convergent Evolution CCE
Cosmic Convergent Evolution CCE offers an integrative new vision of evolution, life and intelligence.
Convergent evolution provides certain ecological and sociological niches that are not Earth-specific or human-specific and are archetypal throughout the universe. These are all evolutionary inevitabilities, where our counterparts are across the galaxy. There may be countless technological civilizations throughout the universe and the ones that do make it may look familiar to us.
The inner Galaxy should logically be a prime target region for searches for extraterrestrial intelligence and that any civilisations that may have emerged there are potentially much older than our own. The probability that a habitable zone planet develops a technological species is larger than ∼10²⁴ years, humanity is not the only time technological intelligence has evolved. This constraint has important scientific and philosophical consequences. The evaluation of constraints on the number of technological civilizations in our Milky Way galaxy for planets in the habitable zone of stars like our Sun indicates that under the most pessimistic considerations we are not alone. The most optimistic assessment indicates that about 40,000 technological civilizations are presently in our galaxy
The idea that any form of electromagnetic signal would be used as a form of communications is one that we are used to from our everyday lives. A major issue occurs when we extend this to long range communications where long range is measured in units of the distance between stars or galaxies. The idea that civilizations that are widely spaced would communicate in "real time" with each other with any form of electromagnetic signal thus seems highly illogical.