Let's do a small, fun thought experiment and place ourselves in the viewpoint that many skeptics have defended for years. Let's assume that UFOs do not exist and for a moment adopt the rationalist perspective to address this mystery. To simplify our experiment, we will set aside all the elements that usually occupy the center of the ufological debate in recent times: the supposed physical evidence, radar detections, blurry filmings, traces on the ground, and even the omnipresent Roswell case. Each of these aspects generates endless discussions and contradictory readings that, instead of clarifying the panorama, tend to muddy it even more (besides being open to more possibilities). Therefore, we are not interested in entering that territory in any way.
What we propose is to move towards a much firmer and undisputed area for both parties: human testimonies. That which remains standing even when material evidence is discarded; that which both skeptics and believers admit: that people recount "incredible" or "very strange" things. Similarly, we decide to exclude from this exercise incidents that have been correctly explained or are the result of inventions, whether by the witnesses themselves or by some investigators, as they do not contribute anything to the core of the problem we are interested in addressing here.
No one doubts that for decades, the UFO phenomenon has fueled the collective imagination, occupying newspaper headlines, books, and documentaries, presenting itself as a challenge to known science. From Kenneth Arnold's initial sighting in 1947 to close encounters reported on different continents with flying saucers and occupants, thousands of people claim to have seen, felt, or experienced something that defies conventional explanations. And, in many cases, their accounts coincide in striking details despite the witnesses not knowing each other, living in different contexts, and lacking apparent motivations to invent their stories. But the unusual thing is that it happens.
But let's start from that initial premise: UFOs have no real basis; that is, there are no extraterrestrial ships or visitors from other worlds or dimensions. If this were the case, a troubling question would still remain to be resolved: why do so many people, apparently sane and without signs of mental disorders, claim to have lived experiences that they believe are profoundly real?
Immediately, skeptics resort to their preferred arsenal of explanations: psychology, sociology, confusion, deception, or mental disorders. And it is that various scholars of the mind have been pointing out for years that the human brain is not a perfect instrument, like a hard drive that stores information perfectly, but rather a creative interpreter, capable of filling in gaps with its imagination and even seeing or remembering events that did not happen exactly as we perceive them. We tend to look for patterns, complete missing information, and grant coherence to ambiguous stimuli in order to interpret them. From lights in the sky to strange sounds, the cultural context can mold the interpretation of an event. This does not mean that the witnesses are lying. On the contrary, many of them are fully convinced that they experienced something extraordinary, supernatural, or extraterrestrial. Researchers often describe these people as balanced individuals, showing no signs of deception and with a solid account that they often integrate into their belief system.
Therein lies one of the skeptic's great arguments: the sincerity of the witness does not guarantee the veracity of the event, at least in its literalness, but, importantly, if it comes to that, it does not completely invalidate it either. Because the witness is reporting something. If one thing has become perfectly clear in the last 8 decades, it is that the UFO phenomenon moves in an intermediate territory where the subjective weighs more than the objective, although, occasionally, physical or physiological evidence is also presented that is difficult to evaluate and continues to baffle experts, but which we will set aside as promised. Because skeptics may eliminate the existence of the phenomenon, but not the extensive casuistry (case history). Here we are no longer talking about UFOs themselves, but about the accounts: thousands of testimonies that cannot be erased from the equation, even if we objected that flying saucers are the product of fantasy. These experiences narrated by thousands of people would still demand an explanation, reminding us that, beyond the objective reality of the phenomenon, the subjective reality of those who claim to have lived it remains an undeniable fact.
If UFOs were a chimera in any of their anomalous aspects, from the extraterrestrial to the most paraufological or Fortean theses, psychology would put at least three major propositions on the table, although none would completely resolve the puzzle of the casuistry:
Memory: Memory does not function like a video recording, but as a continuous reconstruction. A witness can fill in gaps with familiar cultural elements, especially when trying to make sense of an unknown event.
Perception Under Pressure: In situations of stress, surprise, or fear, the brain can interpret ambiguous stimuli as threats or anomalies. A flash, an airplane, or an atmospheric phenomenon can be transformed, from the personal experience, into something completely different.
Cultural Contagion: Cinema, literature, and the media have created a shared visual code about "the extraterrestrial". Even people from different countries can describe similar experiences because they all draw from the same collective imaginary.
But evidently, there are pieces missing here to close the case before a judge. This scenario that we have presented in this essay, despite offering explanatory elements, does not completely resolve the enigma. Evidently, and we can agree on this, the casuistry does not necessarily demonstrate the arrival of extraterrestrials to our planet, but it would reveal the existence of a fertile territory for psychology, sociology, and anthropology still to be explored. It would be necessary to understand why thousands of people, in different eras and places, have constructed experiences so vivid, so coherent with each other, and so profoundly significant.
What kind of visionary state do these people experience? Because, despite numerous attempts, skeptics have not yet identified any syndrome, disorder, or psychological mechanism capable of fully explaining how someone can "hallucinate" in such an elaborate, sustained, and, in some cases, even shared way with other witnesses. There is no diagnostic category that includes episodes of hyper-realistic daydreaming that generate structured and coherent visions with such a high degree of emotional impact. And this absence of a clinical explanation leaves open a fundamental question: if there is no pathological framework that explains these experiences, then, what human, cognitive, cultural, or perhaps something yet to be identified, process is operating at their origin?
Perhaps that is, in the end, the true challenge, regardless of the existence or not of aliens. The human mind appears to be the key to understanding these liminal phenomena that are situated between our Cartesian reality and a very different one, but which would have little or nothing to do with their literalness offered before our eyes. They are manifestations that contain too much of the human, as if they were acting through a psychological filter capable of reinterpreting or "translating" an unknown stimulus into images, archetypes, and narratives according to our cultural expectations. From this perspective, we would not be dealing with a simple perceptual error, but with a more complex process in which the original experience, whatever causes it, is molded, amplified, or distorted by the witness's own mental apparatus. The final experience, the one that is verbalized, would be a kind of mixture of external stimulus and internal construction, an encounter where the real and the imagined intertwine until they become inseparably unexpected.
In fact, it is worth noting that traditional skepticism has tended to deny the very existence of any anomalous manifestation because the proposed explanations have never convinced them: neither the extraterrestrial hypotheses in ufology, nor the supernatural readings of Marian apparitions, nor the Fortean interpretations of unusual events. The focus of their criticism is usually on the conclusions, on the final label assigned to what is observed, and not on the possible triggering phenomenon of these visions. Thus, they casually dismiss that extraterrestrials are visiting Earth, that the Virgin Mary appears before a shepherd, or that someone can encounter a spirit at a crossroads, but they rarely dwell on the obvious: the accounts exist, the experiences are narrated, and these experiences form part of a persistent body that remains over time, regardless of the interpretive framework assigned to them by researchers, witnesses, or believers.
To conclude, we can say that the distortions—that is, the ufological, Marian, supernatural, or Fortean scenarios—however erroneous they may be, do not necessarily invalidate the existence of a real trigger behind them. In any case, they remind us that the important thing is not to deny the explicit content of the experiences, but to understand how, and why, the human mind decodes them in that particular way. Then we will be able to undertake an in-depth, unbiased study of the origin of these manifestations.
JOSE ANTONIO CARAVACA






