In the last week or so, the IHME model under-predicted reported deaths. That is what you appear to label an "under-reach."In any scientific model of prediction, statistically it should be correct more than half the time and incorrect the other half.
We usually get the "dire" model, which has to dialed down as reality reveals itself.
Funny, how the model predictions are always an over-reach, & not ever an under-reach.
Over-reach sells.
Which kinda sounds dirty.