I have a degree in computer science and worked in a technical field for over 20 years. I don't call myself "rational and scientific", though I do think that the Scientific Method is a great way of creating useful models of the world. But those models - like all models - are wrong. Maybe it's just semantics, but one of my points is exactly that some people believe that they are "rational and scientific" and ignore that we are not just computers; experience, emotions and unconscious bias plays an important role in our decisions. Thinking that the whole world (and themselves) can be perfectly rationalized, makes them miss the point that there are non-rational reasons for them to think the way they do. That's why I refer to when I talk about dogmatism.

I suggest everyone (who wants to hear me) to read Joseph Weizenbaum's "Computer Power and Human Reason"; he does a much better job than me at raising similar arguments to mine. Also, Daniel Kahneman's "Thinking, Fast and Slow", for the ways in which we _all_ are so _not_ 100% rational in our everyday decisions.