Have to disagree with you Keg.
We all know that the combination of fatigue and talking to centre, the pax, the cabincrew , company and the person sitting next to you, you are always going to slip up at least once in your career. I know every time i transmit and get no response the very first thing I check is the comms, before i repeat the call.
I dont need everyone , acting like contestants on sale of the century racing to be the first guard hero, to the save the day.