This is a quote from an article Why Bad Beliefs Don't Die
Skeptical thinkers must realize that because of the survival value of beliefs, disconfirming evidence will rarely, if ever, be sufficient to change beliefs, even in "otherwise intelligent" people. In order to effectively change beliefs skeptics must attend to their survival value, not just their data-accuracy value.
http://www.csicop.org/si/2000-11/beliefs.html
It is something I have to review anytime I am investigating a new thought about religion etc. My beliefs are so ingrained that I have to remind myself that I can change them if I need to. It's as tho I have to give myself permission to change belief systems. Coming away from the WT has been the most confusing change of all.
There are people that have deeply ingrained beliefs about JFK. Getting them to change that is just as hard.
Loris