As recording and analysis technology increases and becomes more readily available, the sightings of UFOs have decreased. In the 1940s, the UFO belief was born in the "saucer craze" begun by Kenneth Arnold's sighting and the so-called "crash at Roswell," since thoroughly explained by the Air Force as a combination Projects Mogul and High Dive, which involved high-altitude balloons and anthropomorphic dummies.
The sightings of UFOs continued new trends began. The abduction phenomenon began with Betty & Barney Hill, but was later popularized in the 1980s with Whitley Streiber's tales of "visitors." This trend was amplified in the 1990s with additional books by Streiber and the advent of the X-Files, in which adbuction of humans by an extraterrestrial species was a central premise.
The crop circle phenomenon, the spurious evidence of cattle "mutilations" (dead cows that are devoured by rodents, etc and left to bewilder the mystery mongers), tales of grand government conspiracy & cooperation with alien races, and even stories of battles waged in vast tunnels beneath the desert of New Mexico are all part of the lore of ufology that developed with the comming of the internet in the early 1990's. A mythos like ufology was made for the internet.
Now, in the first years of 2000, we see a decline in sightings of UFOs, cattle mutilations aren't as talked about, aliens aren't abducting us with the frequency that was once asserted, and no one has any evidence that can be measured or analyzed with any qualitative or quantitative method that can produce any meaningful conclusions.
What's different in 2005 that wasn't true for 1980?
Technology. The human kind.
Camera's are now small enough and good enough to apply to cellphones. People can now afford the instant satisfaction of producing still and even moving pictures in digital, easily transferred format. Moreover, this technology is steadily coming down in price while steadily going up in quality. 5+ megapixel digital cameras are commonplace and if you get a dozen or so people in one room, it's almost guaranteed that someone will have a camera. Take a group of a dozen people on any random outdoor event, and you can double that number and add a couple with digital camcorders.
The Independent (Herbert 2005) quoted Andy Roberts, an author of UFO books and former magazine contributor, as saying: 'Ufology is really a thing of the past century. The end of The X- Files series didn't help, and there has been a decline since the televised alien autopsy of the mid-1990s. Basically, it was a hobby that broke into the mainstream. Ultimately, there was only a hardcore following.'
Ironically, there is a surgence of UFO sightings in developing countries. The government of Chile, for instance has UFO 'hotspots' advertised for tourism purposes.
Is there a correlation between UFO sightings and human technology and understanding? Is ufology destined to suffer the same fate of the 'canals on Mars?' In other words, as science, technology and general understanding of both by the general public improve, will ufology one day be considered a quaint belief of quaint people in history? The same quaintness that caused people to believe the world was flat, that the sun orbited the earth, that the moon was made of cheese, etc.?
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Herbert, Ian (2005). UFO-Spotters Give Up Hunt for Flying Saucers. The Independent August 10, 2005, Wednesday SECTION: First Edition; NEWS; Pg. 9