I’m also surprised as it makes quite an important point that hasn’t been made before and I find it’s fair to suggest introducing some minor inconvenience for everyone to avoid major inconvenience (not being able to travel home when planned, etc.) for a non-neglectable number of people.
(FWIW regarding your concrete suggestion: I agree that having to wear masks during lectures seems very low cost. It also seems to be quite low benefits, though, as you’re much more likely to get infected during informal interactions while talking to people than during a lecture.)
I’m also surprised as it makes quite an important point that hasn’t been made before and I find it’s fair to suggest introducing some minor inconvenience for everyone to avoid major inconvenience (not being able to travel home when planned, etc.) for a non-neglectable number of people.
(FWIW regarding your concrete suggestion: I agree that having to wear masks during lectures seems very low cost. It also seems to be quite low benefits, though, as you’re much more likely to get infected during informal interactions while talking to people than during a lecture.)