Crop circles have been proven to be the work of hoaxers.It doesn't mean they are not clever and amazing. Just not ET.
I agree with Simon. The reason why is because of a documentary I saw.
Do any of you in Britain remember a major crop-circle making contest that was hosted by the BBC?
The BBC wanted to see just how good crop-circle hoaxers can be. To give people the incentive to be as elaborate and innovative as possible, they offered a huge cash prize. They put on a contest and made several stipulations: 1) The workers had to work at night within a time limit 2) The workers were not allowed to use any power tools; only manual tools. 3) The workers were not allowed to use any generators for light sources. 4) The workers were not allowed to break or snap any of the crops.
The BBC judges were quite amazed and surprised at what the workers using manual tools were able to accomplish.