I’ve been tanking some downvotes for the past few days for saying this. Disease spread is only exponential for a brief initial period. It is not a good mental or even general model for how disease spreads. We have two years of observational covid data that shows this to be true. Spread slows down rapidly long before reaching 100%. People hear “5x as infectious” and reason that due to the nature of exponential models,…
The exponential part is easy and that works, but it's more complicated with isolation of the infectious, refractory periods, etc