At least one Zoom leaker has already been unmasked: a member of the New York State Assembly who apparently filmed his “self-view” while recording a dispute within the Democratic assembly conference over the renomination of the speaker. That may sound careless, but a feature developed by Zoom will allow future leakers to be exposed even without that sort of misstep.

The queue of electronic hands could take so long to get through that some students abandoned hope and lowered their hands while others got into the habit of raising their hand pre-emptively just so they’d have a spot in line if an idea came into their head later on.