[chmike]

The only real paradox on this matter is that UFOs are systematically out ruled as the expected manifestation of ETs.

There is apparently a prejudice on what an ET manifestation should or might be. If there is no match, people mistakenly conclude that ET don't exist instead of calling back into question their assumptions on what an ET manifestation should be.

Most reasoning about ET naively project humans constrains or interests on them as well as our rationale. This is quite naive.

The author suggest filters, I suggest barriers.

The most important barrier is interstellar travel which requires to be able to collect energy somehow during the travel (i.e. from dark matter) or the be able to completely freeze any activity and energy spending on board during the travel (i.e. as do plant seed) and using the destination sun as energy source to trigger to reactivation.

When a civilization has reached this stage, he most probably has become independent of the need to be on firm ground like an earth or so. He will be much more comfortable in a fully artificial, customized and big enough space ship. What I mean to say is that their constrains may be totally different than what we may expect based on our experience.

From this perspective I assume the real value (St Graal) is scientific and engineering knowledge and mastering, and for this, if avoiding direct contact and obvious manifestation can simplify the task, they'll do it.

We have no idea on their constrains, their knowledge and how humans are positioned regarding it.

There are enough facts and data on UFOs however to learn and deduce things about their technology. (i.e. electro magnetic propulsion, very intense magnetic fields, supra conductive vehicle shell at room temperature and above, protecting against magnetic field, etc...). These are not just speculations, there are hard facts justifying them. (i.e light polarization due to intense EM field around the UFO made visible on a photograph), etc.

Apparently very few people really take the time to investigate objectively and in detail the data at hand and the hard facts.

[ph0rque]

> The most important barrier is interstellar travel which requires to be able to collect energy somehow during the travel (i.e. from dark matter) or the be able to completely freeze any activity and energy spending on board during the travel (i.e. as do plant seed) and using the destination sun as energy source to trigger to reactivation.

There is also the possibility of wormhole travel/other spacetime exotics...

[chmike]

Yes. But their existence, and validity as traveling technique, are still to be proved.

The plant seed, or bacteria spore, analogy invalidates the claim that inter stellar travel is impossible for living bodies. Inter stellar travel is thus possible, even without energy source available on the way.

We also have to call back in question our assumptions on how a contact would happen and how the ET would look like.

The abduction data is on this aspect very interesting because no one could have predicted such a contact scenario. Note that I don't pretend it's true, but the thing is that there is a striking piece of evidence on this subject which out rules the theory of false memory. It is the Betty Hill star map that Joachim Koch recognized as to be our solar system. This interpretation makes much more sense than other interpretation for multiple reasons and the killing detail in it is that Betty has drawn in 1962 a ring around Jupiter and the ring was only discovered by Voyager 1 in 1979 !