Thanks for all the links, Renaeden, Parts, and Jack.
Jack, a lot of points that make sense in those two articles you've read from that link. So nothing really much for me to disagree with. Just that I also think people seek excitement in their lives, and that some seek it through these conspiracy theories.
One of my brothers is a conspiracy theorist, and that is why I am interested in what the hell is on his mind when he keeps spouting the same kind of nonsense Alex Jones spouts. Even intellectual arguments against his claims don't help much. These articles are making sense, especially how we tend to focus on the strengths in any evidence supporting our beliefs and ignore the weaknesses in such evidence. And that's what often keeps both sides (not just conspiracy theorists or fundamentalist Christians or extremist Muslims) stubbornly clinging to often presupposed beliefs ... even if one side has all the major evidence supporting his position.