These precise geometric designs are created in minutes, always at night. There have been many witnesses. The stalks are changed so that nodes in the stalks are stretched in ways never seen before. The cause coud not be determined by physicists at the nearby University of Michigan, who studied them in the 1990s: They concluded some unknown force was involved.
These overnight designs are very complex and very precise. Humans could not have created them if given weeks to do them in daylight. Impossible for humans to create these designs overnight, with great precision, the odd changes to stalk nodes, and no tracks ever found going to the crop circles or coming away from them. These designs are obviously not created by humans. I know that is hard for most people to accept. But that is the obvious conclusion based on evidence and witnesses to their creation.
The US Air Force had about 16,000 UFO reports from pilots from the 1940s to mid-1960s, when the reporting requirements were ended. There have been UFO videos taken by US Navy jets in the past few years that were made public. We are not alone in the universe, folks, and crop circles must be ways for much more sophisticated civilizations to communicate with the primitive, violent people on this planet. They are also geometric art when viewed from the air.
Hoax crop circles are simple and not as precise as the ones in the photos. And the hoax circle stalks are bent and broken, as if stepped on with a board to flatten them, because that's how hoax circles are made. They take a long time to create and are always done in daylight. Not completed in minutes, at night. The crop circles in the photographs, from all around the world, could not be created by humans, and were not created by humans. I am certain of that.