Appropriateness

[Judtech]

What role do you play in the scenario? Are you there as a fan, evaluator or just killing time? If you are there as a fan then it would not be appropriate to say anything. If you are just a neutral observer, I wouldn't say anything unless it came up in conversation. Who is to say they blew the call and knew they blew the call? What good does someone coming out of the blue to state what they know as the obvious?
It can be a fine line. IMOS, I only comment to officials on good calls that went against a team I have a vested interest in, and then agree with my wife that the officials were horrible!! (Hey, the sofa is only SO comfortable!) As an evaluator, I will ask about a play before I tell them what was right/wrong. i.e. " As a neutral observer, I just let it go unless the subject is brought up by the officials.