[vision-master]

$this->bbcode_second_pass_quote('', 'T')hey're all made by hoaxers. Every one, without exception.

In some cases it's "performance art", in others it's to drum up tourism. Over the years the artist/hoaxers have developed marvellous techniques, advancing the work to new heights.

The "genetic makeup" changes are a myth. It's part of the hoax. No such thing actually occurs.

[Zardoz]

http://www.circlemakers.org/

http://en.wikipedia.org/wiki/Crop_circle

[Falconoffury]

$this->bbcode_second_pass_quote('', 'T')hey're all made by hoaxers. Every one, without exception.

[Atlantean_Relic]

Also, there is the moral dilemma if they ask, "Take me to your leader?"
I don't know if I could in good conscious expose E.T. to Bush.