They're both important; beware of trusting the decision making of anyone who suggests otherwise. Rational analyses are almost always by necessity incomplete.

They're both important; beware of trusting the decision making of anyone who suggests otherwise. Rational analyses are almost always by necessity incomplete. There will always be assumptions we think are true that turn out to be false, facts we're unaware of, options we don't consider, or externalities we're oblivious to. Intuition often picks up on those things that we can't obviously articulate, or recognizes patterns that aren't otherwise apparent. On the other hand, people often use "intuition" as an excuse for shooting from the hip, justifying their predispositions, ignoring dissent, or simply being too lazy to do a rigorous analysis. There's no substitute for doing your best to rationally analyze something, gather data, analyze arguments, etc., and not doing so in a particular situation is simply sloppy decision making. But that's merely one input into a decision making process that can also include things that fall under the category of intuition but which can't easily be articulated: ideas that give you a bad feeling or make you nervous, gut feelings about things, consideration of taste and aesthetics. In the end there's no substitute for having good judgment, and good judgment and wisdom come from being able to use both rational arguments/data and intuition/feelings to arrive at the best choice.