To give the question fair consideration, I needed to review the meaning of dialectic, and I found THIS article: csmt.uchicago.edu/glossary2004/dialectic.htm
, so my first question is, are we considering dialectic in Platonic, Aristotlean, Kantian, or Hegelian terms?
In popular parlance, are we using debate as a way to express our personal opinions, bolstered by the facts we prefer while ignoring the inconvenient truths that would blow holes in our opinions? Or, alternately, are we actually discussing agreed upon facts to mold our opinions and come to an agreed upon truth? Is there, in fact, objective truth that is find-able in the midst of our opinions? Which of us, in our human frailty, is willing to acknowledge that we might possibly be wrong?
I note the greatest pitfall in the philosophy of science, which, simply stated is this: All data that does not fit the hypothesis is to be discarded.
I close with this question to ponder: What is theory?