uh, if Person A is confident in their view of something and Person B tells them they're wrong:
If Person A stands by his view (because he's confident in it) then Person B calls Person A "bullish, willfully ignorant, unreasonable, etc etc etc".
If Person A changes his view then he's no longer confident in that first view.
But if Person B insists on trying to get Person A to change his view, then it stands to reason that Person B is being just as "bullish, willfully ignorant, unreasonable, etc etc" as Person B claims A is.
(*giggles* brings back memories, don't it
)