but, knowingly criminally flawed?
"Undocumented equations. Much of the code consists of formulas for which no purpose is given. John Carmack (a legendary video-game programmer) surmised that some of the code might have been automatically translated from FORTRAN some years ago. For example, on line 510 of SetupModel.cpp there is a loop over all the “places” the simulation knows about. This code appears to be trying to calculate R0 for “places”. Hotels are excluded during this pass, without explanation."
https://twitter.com/arabbitorduck/status/1258116061880254469?s=20
https://lockdownsceptics.org/code-review-of-fergusons-model/