The IHME model is seen as "best case" and it's no wonder that certain people in positions of influence are touting it. A lot of people consider it's assumptions flawed. Namely: The creator of IHME’s model, Christopher Murray, said many state models assume that social distancing will only slow or reduce transmission to some degree. The IHME model, drawing from the example of Wuhan, assumes policies such as social distancing and stay-at-home orders, can effectively reduce transmission to the point where an epidemic — at least in its first wave — is actually brought under control by authorities Best to use multiple models like most states are doing. Even the guy that created IHME agrees: “What we’ve learned from 30 years of weather forecasting, even Netflix predictions for movies … you make better predictions when using multiple models.”