Then perhaps you haven't interacted with that many SEEs. This phenomenon is quite common actually. An SEE can be so sure that she is right, and she don't hesitate to point out to you what you don't know or what you have overlooked. It is a mutual fight over facts. That an ILI and an SEE can have these really harsh disagreements is something that outsiders (like Expat for example) have such a hard time understanding. An ILI/SEE dual couple can argue fiercely against each others positions and yet remain the best friends. Such arguments are impossible to have with ESEs, with whom your relation is much more guarded, much more silent, and much more awkward.