Crop circles

Crop circles, sometimes called corn circles in the UK,[note 1] are geometric designs of flattened or knocked-over crops.

The woo is out there
UFOlogy
Aliens did it...
... and ran away
v - t - e

These strange things became famous by two Englishmen (David Chorley and Doug BowerFile:Wikipedia's W.svg) in the late 1970s:

“”Well my friend [Doug Bower] was in Australia for a few years, and he heard a report on the radio in Quensland[sic] that there was a crop circle.[note 2] When he came back to England, he came back after 26 years, and we formed a friendship, because we're both artists, painters.

[...]

So we were out one night and we discussed, whatever, about watercolor painting, and having a beer together. One evening he said, well, at this time, I guess it was 1978, and the UFO phenomenon was right in there in Wiltshire. So we thought, ah, we'll try one in the fields so we put one down. We did this for two years... and nothing came of it. so we decided than,[sic] that what we'll be doing, is putting them down in sites right under the view of the general public. so,[sic] near Winchester, in Hampshire in England, there is a hill called Cheesefoot head, with a great view, from a height down into a down. So we put one down there, and it was taken up by Mr. Pat Delgado, and from then on it took off!
—David Chorley[1]

The phenomenon grew — thanks to publicity in the tabloid press and many copy-cat pranksters — and although now widely known to be hoaxes, they were often used as evidence for alien visitations during their heyday in the 80s and 90s.

People who specialize in the study of them are known as "cereologists". People who think they are alien artifacts are typically referred to by less charitable terms. It has to be admitted though, that some crop circles are pretty cool works of art, no matter who, or what made them.

Paranormal explanations
Rare photograph: dumb enough to lose at tic-tac-toe?

Gullible people, however, continue to believe they are made by flying saucers, even though the original pranksters 'fessed up in 1991 to starting the craze. If UFO enthusiasts even acknowledge the original pranksters at all, they'll say it doesn't matter because those guys couldn't have been responsible for all the other circles...apparently not grasping the concept of copycat pranksters. The assumption is that although the aliens are intelligent enough to evade the radar detection systems of the entire earth, they are not smart enough to notice they have left quite clear evidence of their landing.

Further theories even say that the aliens have nothing better to do than knock over crops, leaving the marks intentionally as coded messages. Alien visitations aren't the only "explanation" for crop circles, although they are by far the most popular, as others think that they are the result of plasma vortexes, various forms of secret government activity or some kind of "Earth Energy"[2] linked to ley lines.

The supernatural explanations also don't account for exactly why the aliens are carrying planks and rope in the boot of their space-Skoda when they come visiting Earth in the first place. The best explanation here is that they probably had a few too many space-Kronenbourgs and thought pranking the humans would be funny.

Natural explanations
Aliens run QI — "is it real, or is it man-made?"

People who like to appear too skeptical to call aliensdidit, but don't want to completely spoil the fun by mentioning "hoax", often use naturalistic phenomena as explanations for crop circles. These skeptical explanations include very isolated tornadoes, or ball lightning and might theoretically account for some simple crop circles but there is no particular reason to believe it. However, many crop circles — particularly the more recent ones — are quite complex geometric patterns and sometimes aren't even pure circles. These more advanced shapes cannot be the result of such natural phenomena, even if they were shown to exist and be capable of creating crop circles. Both the hoax-theory and the alien-theory proponents point to the complexity of their shapes as evidence of an intelligent source, though they quite obviously disagree on what the intelligence is.

Real explanations
Urban aliens had to think up new ways to make circles.

These explanations, both paranormal and natural, seem unnecessary when it is known that teams of perfectly ordinary (if not entirely "normal") human beings construct crop circles for a hobby (which everyone should have). Human night vision turns out to be quite good once it's developed, enabling circle makers to operate perfectly well without artificial light — indeed, better without it — explaining why no one ever sees them at night. There are several websites dedicated to cataloging notable examples of this variety of earthform art and in 1992 a competition was even held to see who could do the best. The competition was noted for the fact that teams worked to a standard design with features that were said by believers to be difficult to fake; the results were very conclusive in demonstrating that humans could not only reproduce complex designs, but could also do it without leaving a trace, in a short period of time and in remarkably small groups.[3] Numerous techniques and tools are also well known, such as using ropes or telescopic rods to get a constant radius of a circle, a flat plank of wood for bending the crops down, and specially linked ladders to get over crops without leaving trails.

None of the supernatural or non-hoax natural theories explain why, during the quarantine of the British countryside during the foot-and-mouth epidemic of 2001, the number of crop circles being made fell dramatically, to rise again when the footpaths were re-opened.[4] Except, of course, if the aliens were afraid of exposing their livestock to such a disease — or were busily engaged in spreading that particular plague themselves.

Cereology

No form of woo is complete without its attendant pseudoscience. For crop circles, it's called cereology. Students of cereology follow the classical pseudoscientific method, studying all bullshit evidence that supports their preconceived notions and studiously ignoring tiresome facts and reality. They have websites, so clearly they must be proper researchers, not drivelling lunatics who haven't yet found porn so invent aliens instead.[note 3]

gollark: Well, gmail is bad.
gollark: OR DOES IT?
gollark: You left your phone behind, remember?
gollark: 🌵 <@151391317740486657>
gollark: Which you don't have.

See also

Notes
  1. Much to the confusion of Americans, as crop circles are very rarely done in maize. In this case, 'corn' is a generic term for grain.
  2. The TullyFile:Wikipedia's W.svg "saucer nest" case
  3. Sadly, Rule 34 is in effect.

References
  1. Doug and Dave down the pub
  2. Crop Circle FAQ, Crop Circle Connector
  3. Rupert Sheldrake describes the first and only international crop circle competition
  4. Disease brings poor crop of circles, BBC News, 17 August 2001
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