This trope is when two or more opposing sides of an argument eventually realize that each side has a point and that they shouldn't be fighting each other. They usually come to this realization by either talking it out with each other or by being influenced by a third party. In works that decide to include a third party into the equation, this character has to be the middleman between two sides. In order to resolve the argument, this character decides to judge both sides fairly and vocalize the strengths of each side's arguments. The purpose of this tactic in the story's narrative is to enrich the morality of the setting and avert Black-and-White Morality.
Compare What Is Evil?, where a villain tries to invoke this to challenge their status as a villain to begin with, with varying possible degrees of justification and success (depending mostly on whether the work's approach to morality is more Black and White or rather Grey and Gray). Compare also The Horseshoe Effect, for those strange cases in which both sides actually have the same point, despite being ostensibly opposed to one another. Contrast Culture Justifies Anything, where it's very likely that at least one side does in fact not have any valid point. Not to be confused with Double Weapon, where both sides of your weapon have a point. Compare Grey-and-Gray Morality, as well as Rousseau Was Right and Good Versus Good. Characters stuck in this situation may decide to Take a Third Option. If only one side is portrayed as valid in-story but the other also has one in practice, that's Strawman Has a Point. Beware of falling into the Golden Mean Fallacy, where a compromise is reached, but one side is flat-out wrong, and has no valid point after all.