As an alternative to the extraterrestrial visitation hypothesis, Vallée has suggested a multidimensional visitation hypothesis. This hypothesis represents an extension of the ETH where the alleged extraterrestrials could be potentially from anywhere. The entities could be multidimensional beyond space-time; thus they could coexist with humans, yet remain undetected. Now I See You: The Role of Imaginary and Supernatural Friends in Fantastic Films and Television June 9, 2022 Ex his item tam profunda stultitia excaecatis, ut haec posse fieri credant, vidimus plures in quodam conventu hominum exhibere vinctos quatuor homines, tres viros, et unam feminam, quasi qui de ipsis navibus ceciderint » Obviously, and the author states this directly, all of this needs to be taken with a large grain of salt. Beyond his theory that there’s more than a passing similarity with encounters of fae and demons, he really makes no judgement calls about coverups or if they’re real or what. So for it’s incredibly fantastical subject matter it takes a surprisingly measured approach. The analysis of the way he reported the Magonia case should be enough to not even give attention to his knowledge of folklore but : not only folklore is by definition vague, varying, unreliable, what he does here is confusing correlation and causality :

But those who know the career of Vallée shouldn’t be surprised one bit ; what to expect from a man that Not only that, he considered science had to be separated from religion, thus being a precursor of the Enlightenment, a millenia before it started. Bad reasoning, bad translations, bad sources and forgeries”, you now can see the title kept its promises... Forbidden Science 4: The Spring Hill Chronicles, The Journals of Jacques Vallee 1990-1999 (self-published with Lulu Press, 2019) However, by 1969, Vallée's conclusions had changed, and he publicly stated that the ETH was too narrow and ignored too much data. Vallée began exploring the commonalities between UFOs, cults, religious movements, demons, angels, ghosts, cryptid sightings, and psychic phenomena. His speculation about these potential links was first detailed in his third UFO book, Passport to Magonia: From Folklore to Flying Saucers. [4]

A Century of UFO Landings (1868-1968)

Jacques Vallée (1975), The Invisible College: What a Group of Scientists Has Discovered about UFO Influence on the Human Race, Wikidata Q2983594 Remote Viewing and Computer Communications: An Experiment." Journal of Scientific Exploration, vol. 2, no. 1 (1988) pp.13–27. ISSN 0892-3310. And we also saw and heard many, deep into madness*,* alienated from so much stupidity*, that they believe and say that a certain country exists, named Magonia, from where, through the clouds, come boats...*

Anatomy of a Phenomenon: Unidentified Objects in Space – a Scientific Appraisal. NTC/Contemporary Publishing (January 1965). ISBN 0809298880. Vallee studied mathematics at the Sorbonne and received an MS in astrophysics at Lille University, then began his professional life as an astronomer for the French Space Committee, working at Paris Observatory. In 1962 he began working as an astronomer at the University of Texas at Austin, where he co-developed the first computer-based detailed map of Mars for NASA. He then moved to Northwestern University where he earned a PhD in artificial intelligence and served as a close associate of Dr. J. Allen Hynek, the U.S. Air Force’s top scientific consultant on UFOs under Project Blue Book. He went on to work for Hynek and Project Blue Book to create the first interactive computer data base of UFO observations. The Network Revolution: Confessions of a Computer Scientist. Berkeley: And/Or Press (1982). ISBN 0140071172. But as a conclusion, i’ll leave you with an analysis of Vallée’s own conclusions, that he kept pretty much for all his career. He does not believe in UFOs in the traditional way but in the psychic/interdimensional beings way. He resumed why he thought so in 5 points : Vallée's opposition to the ETH theory is summarised in his paper, "Five Arguments Against the Extraterrestrial Origin of Unidentified Flying Objects", Journal of Scientific Exploration, 1990:Estimates of Optical Power Output in Six Cases of Unexplained Aerial Objects with Defined Luminosity Characteristics." Journal of Scientific Exploration, vol. 12, no. 3 (1998) pp.345–358. ISSN 0892-3310. Jacques F. Vallee was one of the first scientists to closely study UFO phenomenon. He goes beyond a simple examination and compares it to the fairy religions and mythologies from the past. Passport to Magonia is one of his most well-known works.

Kripal, Jeffrey J. "The Future Technology of Folklore: Jacques Vallee and the UFO Phenomenon" (Chapter 3). Authors of the Impossible: The Paranormal and the Sacred. University of Chicago Press (2010) pp.142–197. The subheading of this book is "From Folklore to Flying Saucers" and that sums up the contents very well. Vallée presents the idea that there is no true difference between the phenomena of angels and demons, fairies and elves, djinn and dwarves and the UFO inhabitants. He lays out compelling arguments, comparing and contrasting the stories of those who went to the Otherworld of Magonia and returned and those who were spirited away by flying saucers. He compares the humanoids encountered by people throughout the ages, and how familiar they are if only one has an eye for folklore and history. Perhaps, after all, they are the same. If they are the same thing, what does that mean?He has also served on the National Advisory Committee of the University of Michigan College of Engineering and authored four books on high technology, including Computer Message Systems, Electronic Meetings, The Network Revolution, and The Heart of the Internet. There is one and only ONE (yes ONE) time where he, the only and original source, talks about the story of Magonia, situated in the chapter II, here it is : Let us come to the point now. It would be nice to hold on to the common belief that the UFOs are craft from a superior space-civilization, because this is a hypothesis science fiction has made widely acceptable, and because we are not altogether unprepared, scientifically and even, perhaps, militarily, to deal with such visitors. Unfortunately, however, the theory that flying saucers are material objects from outer space manned by a race originating on some other planet is not a complete answer. However strong the current belief in saucers from space, it cannot be stronger than the Celtic faith in the elves and the fairies, or the medieval belief in lutins, or the fear throughout the Christian lands, in the first centuries of our era, of demons and satyrs and fauns. Certainly, it cannot be stronger than the faith that inspired the writers of the Bible—a faith rooted in daily experiences with angelic visitation.” Supported by National Science Foundation Grant GJ-35 326X and Advanced Resesrch Projects Agency Contract No. DAHC 15 72 C 0165." Other materials [ edit ] Agobard’s manuscript is titled “ Contra insulsam vulgi opinionem de grandine et tonitruis”, which means “ Against the stupid popular belief about hail and thunder”. Yes, the source itself says the story is "stupid".

What happened? Do you suppose that ignorant age would so much as reason as to the nature of these marvellous spectacles? The people straightaway believed that sorcerers had taken possession of the Air for the purpose of raising tempest and bringing hail upon their crops. The learned theologians and jurists were soon of the same opinion as the masses. The Emperor believed it as well; and this ridiculous chimera went so far that the wise Charlemagne, and after him Louis the Debonair, imposed grievous penalties upon all these supposed Tyrants of the Air. You may see an account of this in the first ehapter of the Capitularies of these two Emperors. In the mid-1960s, like many other UFO researchers, Vallée initially attempted to validate the popular Extraterrestrial Hypothesis (or ETH).Mahar, Ted. "UFO Scientist Says Search Needs Skeptics Jacques Vallee Employs both Respect and Analysis." Oregonian (June 4, 1990) p. D1.