You may be right to not want to spend more time on this point, as long of course as you don't consider it another proof that I shouldn't use the word or that I don't listen...
Yes, obviously I keep arguing, that's the principle of a discussion, to argue until we collectively find the truth.
If by that you mean that I can never be convinced that I'm wrong, that's demonstrably false. I did on many occurrences change my mind and acknowledge the validity of the other's position when presented with an argument that I found convincing.
The only situation were stating things can be useful in a discussion is when these statements are a common ground.
If, for good or bad reasons, I don't find these statements as obviously true as they are to you, then you need to prove the validity of these statements in order for the discussion to have any chance to produce results.
Not sure what you mean here.
(BTW, referring to "norms" without first checking that all parties to the discussion share these same norms is another thing that is at risk to be entirely sterile)
I was trying to say something simple : you named as axioms things that were actually the object of our discussion (what does "interesting" means and its usefulness as a single word in response to an idea).
If you wanted to convince me logically, you needed to prove these points rather than use them as axioms (and for that, you needed to start from axioms that we both would agree were true).