[dial9-1]

your second paragraph kinda answers itself

[strken]

I don't think it does. If you have a ? in your cost-benefit spreadsheet for "cost in DALYs of locking down schools", the obvious solution (that one assumes governments actually used) is to ask your education expert for a guess and a confidence interval.

Getting that estimate wrong is not the same as failing to consider it.

[vosper]

My parent said cost-benefit was ignored, not that it wasn’t considered.