Coronavirus task force member Dr. Anthony Fauci weighs in on criticism over coronavirus models. Coronavirus task force member Dr. Anthony Fauci told "The Story with Martha MacCallum" Friday that he has always been skeptical of models projecting the toll of the coronavirus pandemic in the United States. "Models are only as good as the assumptions that you put into the model," Fauci. "And those assumptions that start off when you don't have very much data at all, or the data you have is uncertain, then you put these assumptions in and you get these wide ranges of calculations of what might happen." "But then as you start to accumulate data, [...] that's real data likely being influenced heavily by the mitigation programs that you put in the physical separations, when real data comes in, then data in my mind always trumps any model," Fauci added.