I don't see it as a "problem," honestly. I see it as just the way it is. It is only a problem if you view "divisiveness" as a more fundamental problem in the pursuit of understanding.
I think it's important to make a distinction between attacking a person based on their identity vs. attacking an idea.
And in general I think attacking an idea is viewed as divisive only when the apologist is dogmatic.
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As an example, for almost 20 years as a teacher and coach, I've studied and applied the best practices and ideas I could find to support linear pedagogy.
A few years back I had to face the reality that for many situations, non-linear pedagogy was a superior approach. It was hard at first, but ultimately I've come to embrace non-linear pedagogy. I never saw the knowledge of this new teaching approach as "divisive", but I might have if I had held my old approach dogmatically.
I'm sure many people have had similar experiences.
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