This is an explenation of a popular example of why members
fall out of their belief.


Not every believer have complete or even enough knowledge about
their religion, which can be argued is important or else you may
"fall away" to "the dark side." (Or something, I think this is
what my mom always told me).

Then if you get some very good "facts" and information against your
belief, and maybe at the same time are a little doubtful (you have
been "proven" or just in a situation or mood) it may cause you to 
not belive any more. Then you may get very dissapointed over all the
lies one has been fed up with.


(this knowledge is very important to believers, so they can be 
prepared)