I was listening to a NPR story about a lady who was on a train in england when a bomb went off on it. She survived but many in her car were killed by the blast.
The lady went home in shock and was unable to rest or go to sleep so she decided to post about her experience in her online blog. Many people read the blog and posted comments and it was generally very cathardic experience for her.
A few days later she heard about a forum that was quoting her blog and using it as evidence that the bombing had never happened. She went and checked it out and saw that it was a forum dedicated to conspiracy theroy folks who thought the attack was a governement action to gather support for the war or something.
They had gone through her writeup and picked out a bunch of things that they were using as evidence that it didnt really happen. Sayign that what she actually experienced couldnt have happened and even stating that from her writing style it was obvious that she wasn't actually a woman. They suspected that instead "she" was a fictional government persona created to act as a witness to the event. She decided to post on the forum and set these people straight.
Up until that last line I was enjoying the story and didnt think much about the conspiracy people. But as soon as she said she was going to post on the forum to argue with them I thought "Oh my god, stay away! That will never work!"
Sure enough everything she posted was only used as further evidence that she was a government operative. She tried again and again. She actually went to one of their meetings. Still nothing she could do to change their mind.
In some regards I think this thread is like that issue. There isn't that can be said that will change anyones viewpoint, and in fact many of the things being said are just polarizing people further.
Disclaimer: Im not saying anyone here is as crazy as a conspiracy theroist. Its just an interesting story used to exhibit the trouble convincng passionate people ont he internet.
Disclaimer 2: In not saying that conspiracy theroists are as crazy as anyone here. Please don't attack me and try to remove government mind control devices from my sphincter