Conversations (usually) lead to understanding, consensus, and answers.
When conversations turn into arguments, when you attack the other side instead of improving your idea with theirs, when the desire to win thus blinds you to your own imperfections.... Conflicts are renewed and deeper entrenched.
90% of disagreements start from conflicting definitions of some abstract word/concepts ... and from there it only gets worse.
What happens in the microcosm is bound to happen in the macrocosm.
And personally, I think any discussion has to start on the psychological level and then build upwards. Just saying... all politics is local.