Recently, when microphones fail. When we have to keep saying, “Unmute yourself.”…In large lecture halls, usually a failing microphone is what put people to sleep or to anxiety, almost immediately. Even if the camera stutters or if we don’t get video, as long as we have good audio we’re still in rapport, but if somebody start to hear a lot of echo, a lot of “beep,” we can’t really have any empathy after just five minutes.