Relationship can be anything involving two entities. In this case, parent-child, or teacher-srudent etc. But it can also involve animals, and maybe non-sentient beings too...
this territory is moderated
Then, in general terms: arguments quickly abandon any logic whenever one of the entities perceive that can't be held accountable for keeping whatever stand. Only, and strictly only upon being held accountable for an illogic stand, the entity promptly gets back to reason. This can be considered the 4th law of thermodynamics.
reply