Stands to reason. The purpose of commenting is to be wrong, so that someone will correct you, allowing you to learn more about the subject matter. Cunningham's

Stands to reason. The purpose of commenting is to be wrong, so that someone will correct you, allowing you to learn more about the subject matter. Cunningham's Law. If you are well versed in a topic there is no reason to talk about it. You are already well versed in it and gain nothing from discussing it further.