An amazing little discussion about contemporary fantasy literature seems to be making its way through the internet. Here's a link to R. Scott Bakkers brilliant answer to this debate, which is the most relevant (and funny) I've yet read.
The Fourth Tribe
One of the commentors also provided a link regarding "The Texas Sharpshooter Fallacy", a concept that, among other things, provides a very handy argument against all kinds of conspiracy theory crap:
Texas Sharpshooter Fallacy