the foundation of fundamentalist Christianity if that of "faith"
and this is simply defined believing something without the need for supporting facts, evidence, etc.
as a consequence when these untested beliefs run contrary to facts, evidence, etc. there is a conflict
for example, it was Catholic Church fundamentalist faith/belief that the sun rotated around the earth. even though this was later disproved by science the Church refused to acknowledge the truth and went as far to even place scientist on trial and jail scientist
for a more recent example, i site you the 2008 Republican candidates debate. when they were asked about evolution, the Repub candidates raised their hands and expressed disbelief about evolution