To the extent that basic, elementary reason/logic is. Of course, there are people and cultures that are unreasonable.
I believe I'd consider that it could weigh a little heavier than that. If your assertions ultimately seem to be in error - IMHO, in this case a distict possibility, it means that you're either carrying so much personal or cultural freight as to be incapable of basic, elementary reason/logic, or you are just plain unreasonable, which means I have misjudged you entirely, and I just hate to be wrong.