I think the models are likely good.
Their parameters are largely unknown.
Initial conditions are not a big factor in the outcomes.
Where does Brix get the data to estimate “new” parameters?
The parameters are unknown but somehow the models are good?
How did Imperial College's Neil Ferguson prediction model of a massive 500,000 deaths in the UK work out?
Wow, just wow. (Shaking head...)
Try reading. Your questions are truly Bidenesque.
She has data down to the county level
She knows without guessing
The models are literally impossible. One they used said the u.s. would have 11M cases in march. That was published on march 24. Wth?