A passing spacecraft is not governed by statistics dreamt up by some over-paid scientists. Also, 90% of scientists refuse flatly to look at data from, say, UFO sightings which is what science SHOULD be doing rather than leaving it up to con-men and other dubious types (95%).
"It's all ball lightning, grey bogey men and silly abduction stories!" is NOT scientific.
"Leave the whackoes to the psychologists!" is NOT scientific.
If a person -Professor, Doctor -whatever paid for degrees and qualifications- is supposedly involved in something like SETI (Search for Extra-Terrestrial Intelligence) or exobiology then they have to adopt the scientific approach. Remember:
A lot of these 'scientists' even ignore information and material from other scientists -some further up the science ladder than them. That is NOT science.
Back in the 1970s I was told again and again that if I was going to look at the claims of UFO landings and Alien Entities, that I needed to look for rare, non-humanoid sightings because all the latest scientific fact and calculations showed that life on other planets would not involve humanoid beings. But quite gradually, over the years, theories and calculations and theories change or get altered by new "impossible" discoveries busting the nose of science. That is how it should work.
And now, after decades of searching for those non-humanoid cases, I hear saying change its mind. Those high strangeness "UFO" cases involving humanoids that Scientists were laughing at should, it seems, not have been so quickly dismissed -but not by me. I gather the data and try to draw conclusions because I use the Scientific Method. I never dismiss.
In 2015, Paul Gallaher of the Independent wrote this piece:
Forget little green men – aliens will look like humans, says Cambridge University evolution expert
They are often portrayed on screen as little green men with elongated limbs and saucer-like eyes.
From E.T to the X-Files, aliens from outer space have captured our imagination for decades.
Yet a new book from a leading evolutionary biologist argues that if they exist and we ever encountered them, they would look very similar to us.
Professor Simon Conway Morris said extra-terrestrials that resemble human beings should have evolved on at least some of the many Earth-like planets that have been discovered by astronomers.
In his new book published on 2 July, The Runes of Evolution, the University of Cambridge academic builds on the principle of convergent evolution – that different species will independently evolve similar features, with the comparison of the camera eye of an octopus and a human eye a favourite example – and argues it will not just took place on Earth.
“The theme is to try and drive the reader, gently of course, into the possibility that the things which we regard as most important, ie cognitive sophistication, large brains, intelligence, tool making, are also convergent. Therefore, in principle, other Earth-like planets should very much end up with the same sort of arrangement.”
Professor Conway Morris, a Fellow at St John’s College, said it follows that plant and animal life on other planets able to support life would also look similar to Earth’s.
He said: “Certainly it’s not the case that every Earth-like planet will have life let alone humanoids. But if you want a sophisticated plant it will look awfully like a flower. If you want a fly there’s only a few ways you can do that. If you want to swim, like a shark, there’s only a few ways you can do that. If you want to invent warm-bloodedness, like birds and mammals, there’s only a few ways to do that.
“The whole business of extra-terrestrial life, Kepler [the most Earth-like planet ever discovered], the search for extra solar planets, and of course the various missions to Mars. This is all going along at such a pace at the moment we can be reasonably sure [any current ideas] might be open to revision in a few years.”
His theory leads on to Enrico Fermi’s famous paradox – why, if aliens do exist, have they not made contact. He admits his book goes “off-piste for a bit of fun” in the last chapter when dealing with this problem.
Professor Conway Morris said: “Fermi’s paradox seems to be coming rather sharply into focus. If I’m on the right track then the likelihood of intelligence is evolving and actively engaging in some sort of transgalatic expeditions doesn’t seem to be completely beyond the realm of possibility.
“What Fermi didn’t know when he asked that famous question was that the number of Earth-like planets is absolutely gigantic now. More problematic is that many of these solar systems far, far pre-date our solar system. They would have, in principle, a major head start of hundreds of millions, if not billions, of years.
“The problem is exceedingly acute: we shouldn’t be alone but, famous last words, all the evidence suggests we are. Maybe [aliens] are hiding, the Arthur C Clarke idea, or as Stephen Baxter mischievously suggested we live in a virtual world. I don’t honestly know. My suspicion is we have only begun to scratch at the surface of reality, for want of a better word.”
But here we have Fermi referenced again (I guess every movement needs a Poster Child! ).
You can also check these out:
This is the point: scientists are people. They have prejudices and dislikes. These should be left out of their work but are not. Prof. J hates Michio Kaku and his "Media darling" status so they'll argue against anything he says. Prof L hates Prof J so will push anything Kaku says to annoy Prof J.
There are others who, for religious reasons, argue that life beyond Earth is impossible (cus we 'know' a beardy bloke on a cloud created us). Others refuse to accept life beyond Earth because that would not make Humanity unique. Others are simply closed-minds who will not consider nor look at anything they do not want to because it is "rubbish".
And we have the scientists who deal with theory. Fermi can be used to argue pro and con and it has to be remembered that this is all on-paper or on computer theorising because you simply cannot calculate when an extraterrestrial craft will circle or land on Earth let alone when "they" will contact us. These theorists are safe because none of us will be here in 1,500 years!
“It’s possible to hear any time at all, but it becomes likely we will have heard around 1,500 years from now,” noted Solomonides in a press statement. “Until then, it is possible that we appear to be alone—even if we are not. But if we stop listening or looking, we may miss the signals. So we should keep looking.”