How to deal with religious cults

When dealing with a religious cult (or a pseudoscientific cult), it is best to take them at face value. Know their scripture and bring them down with their own internal inconsistencies. Do what Christopher Hitchens did. Don't convince them that others might be right, show them that what they believe is wrong (and that they might have been lied to by their high priests). The down-side is you need to read and learn their gibberish scripture…