As Andrews writes:
I have said in my presentations for over a decade now that people that make crop circles are an essential part of the education process when studying the entire mystery. I admit I was a long time coming to that place myself, 16 years in fact .I didn't want to hear that either, --- ever. But because of my deep regard for Colin Andrews, I listened. I was fortunate enough to be at the McMinnville UFO Fest last May, where he was the main presenter, and he explained his admittedly controversial views. The idea that crop circle phenomena only gets a lot weirder and complex and profound with this added data of human made crop circles and the effects of such. And it shouldn't be (though it is) misused as a "See? Even Colin Andrews says most of crop circles are made by humans." We don't get off that easy.