Think of a frum professional. At the office he's Joe, at home Yossi...Such a split need not be a disorder unless a person has a problem with it. There is no mitzvah min hatorah or min Freud to integrate everything.Of course, if the guy has five selves and they begin fragmenting so he falls apart...that's a different story. Your trouble in understanding might stem from an overdose of Torah u'Madah, where everything has to be integrated.Witness the sad case of Mr. Slifkin. Charedim don't try to integrate very much.
I'd like to think I am open minded. I freely admit that there are many things that I don't understand, or have wrong ideas about. Is this one of them?
I guess my opening position is that in general, it is human nature to try to integrate the information around us into a coherent mental model of reality. This is essentially what our brain is designed to do. At a more macro level, the notion of cross disciplinary scholarship has really improved the gains in understanding in many areas of research. At my alma mater in Urbana-Champaign, the Beckman Institute combined biologists, physicists, neurologists, computer scientists and psychologists all working together.
I think part of my discomfort with evanstonjew's comment is that there is a difference in my mind between a lack of integration and essentially a dissonant contradiction. I think a person who compartamentalizes being a hardnose boss at work and a loving father at home is an example of harmless lack of integration. At the other extreme, DovBear posted about Nazis enjoying themselves at Auschwitz. He says:
You can't help but ask yourself: How in the hell? Was it bifurcation? A form of mental illness? Or did these smiling men and women simply come of age in a foreign time and place, a time and place where people mattered less (Jews especially) and such things were unremarkable?Don't get me wrong. I don't believe that a human being in isolation is a rational creature. I will not deny an individual their right to retreat into an irrational state. I don't deny a Kugel or a Schiffman their personal POMO lifestyle. But as a society, people do have to be rational. Is it possible to have a whole culture built on a foundation of irreconcilible paradoxes?