A fundamentalist is a person who considers whether a fact is acceptable to their faith before they explore it.
That’s opposed to a curious person, who explores first, and then considers whether or not they want to accept the ramifications.
Such a great way to compare the two approaches.
Defending your beliefs is good; exploring other points of view is also good. It’s the order in which you do it that’s important. Explore first, then draw your conclusions.
Seth Godin quote taken from this video.