> A constant 2nd-derivative means quadratic growth, not exponential. A constant relative second derivative of total deaths is what they are talking about, mean

> A constant 2nd-derivative means quadratic growth, not exponential. A constant relative second derivative of total deaths is what they are talking about, meaning that they are flattening the 2nd derivative of the exponential by dividing by the exponential, making it constant. Of course, this is all numerical methods, not analytical methods, so it doesn’t necessarily make pure analytical sense that they are even talking about an exponential.