29 November 1989, in Eupen, Marc Hallet wrote an essay about the Belgian UFO wave criticizing the work done by the SOBEPS: La Vague OVNI Belge ou le triomphe de la désinformation, arguing that this UFOlogical organisation was spreading misinformation in the media. Hallet's thesis is that the Belgian UFO wave was mostly a mass delusion, boosted by the work done by the SOBEPS. This mass delusion would have followed Philip J. Klass's law: "Once news coverage leads the public to believe that UFOs may be in the vicinity, there are numerous natural and man-made objects which, especially seen at night, can take on unusual characteristics in the minds of hopeful viewers. Their UFO reports in turn add to the mass excitement, which encourages still more observers to watch for UFOs. This situation feeds upon itself until such time as the media lose interest in the subject, and then the flap quickly runs out of steam." In 1993, Pierre Magain and Marc Remy published an article in Physicalia Magazine, in which their conclusions don't match those from the SOBEPS. They also state that the Belgian UFO wave would be better studied by people in the human sciences than by physicists. In The Belgian UFO Wave of 1989–1992 – A Neglected Hypothesis, Renaud Leclet & co. discuss the fact that some sightings can be explained by helicopters. Most witnesses reported that the objects were silent. This report argues that the lack of noise could be due to the engine noise in the witnesses' automobiles, or strong natural wind blowing away from the witnesses. In his article The Beginning of the Belgian UFO wave, Jean-Michel Abrassart argues that the beginning of the wave does not contradict the psychosocial hypothesis, contrary to what the SOBEPS claimed in his work. In an article published on his website in 2011, The Belgian Wave and the photos of stuff, Auguste Meessen replied to several criticisms (by Roger Paquay and Jean-Michel Abrassart) and argues that, according to him, the Belgian UFO wave is completely unexplained. Roger Paquay and Jean-Michel Abrassart both wrote rebuttals to the Belgian physicist's article. In "The Belgian UFO Wave" Skeptoid podcast episode, Brian Dunning discussed the F-16 chase and reported that Regarding the "wave" of eye-witness reports and lack of photographic evidence, Dunning concludes See also UFO sightings in Belgium List of UFO-related hoaxes Black triangle UFO References Further reading SOBEPS: Vague OVNI