It'd be nice if you actually were more specific. I could say half of your threads don't incite discussion because no one ever knows what the hell you are asking. I assume rationalism is the act of being rational.
How can it be against being rational if it's called rationalism? "rationalism is "any view appealing to reason as a source of knowledge or justification". In more technical terms, it is a method or a theory "in which the criterion of the truth is not sensory but intellectual and deductive"" Sounds like what science does to me, using reason to get to conclusions. I'm not sure where you get your definition from.