I really am amazed by how some people manage to convince themselves of something so much, that no matter what science or logic you put in front of them, they will carry on with their belief.
What worries me the most is that some of the people that support the "chemtrail" theory are willing to try and upset and disrupt the pilots and workers that operate the aircraft. They are that steadfast in their belief that talking about hassling a Qantas crew is okay.
I wonder how long it will be before something drastic does actually happen?