Other comments in this thread suggest that one should turn their camera off and do something else. This, I believe, is the default experience: that behind every

Other comments in this thread suggest that one should turn their camera off and do something else. This, I believe, is the default experience: that behind every participant without camera there's someone ignoring your talk. It's the same as presenting to a room where half the attendees are on their phone - while it's conceivable that some of them are using it to (say) find a detail that the presenter missed, the more likely explanation is that they're checking their emails and/or Instagram.