I had to look up "logistic" in that context. Almost anything that is described as "exponential" isn't really exponential, if the curve is describing a real-wor

I had to look up "logistic" in that context. Almost anything that is described as "exponential" isn't really exponential, if the curve is describing a real-world quantity. Real-world quantities tend to be subject to limits. I'm an annoying pedant regarding the word "exponential", which is commonly used (especially by journalists) simply to mean "grows fast". I think it's fair to call a curve "exponential" if the relevant part of the curve approximates to exponential.