National University of Singapore (NUS) mathematics Professor Wang Dong (Behave!) discovered at the conclusion of his two hour lecture via Zoom that he had been on mute the entire time.
He learned the horrible news when he asked for questions.. Eventually one of the 20 or so students who hung around the entire, dead, two hours informed him what had happened. The screen had frozen just eight minutes into the presentation. Prof. Wang eventually got up the courage after his humiliation to say that he would reschedule his lecture. HA! Good luck with that. I would demand that he send the students a written version. He had his opportunity to present orally, and botched it. It appears that he muted himself by accident, and students tried to alert him but to no avail. They unmuted themselves, but he couldn’t hear them. The message function didn’t work. They tried to call his phone, but he didn’t have it on.
The main problem was that Prof. Wang was doing the entire lecture from his iPad, and that isn’t wise. Now he leaves his phone by his side when lecturing on Zoom.