The main purpose of a commentary is to provide analysis, interpretation, or critique that helps people understand the deeper meaning of an event, text, or research study.
Instead of just stating bare facts, a commentary explains the "how" and "why" behind the information.
In Academic and Scientific Research: Experts write commentaries to critique newly published studies, discuss wider implications, or offer alternative interpretations.
In Media Sports and News: Writers use opinion pieces or op-eds to give a fresh perspective on current events, helping readers form their own views. Live sports or event announcers provide real-time explanation and context to keep the audience informed and engaged
In Literature and Essays: Writers use commentary to analyze specific quotes, literary devices, or source text to show how the evidence supports a central argument
https://m.youtube.com/watch?v=s30mWuZaxT8
https://www.cbr.com/the-far-side-comics-1983-gary-larson-genius/