I've been analyzing further. When we hit the vertical stage of the adoption S curve, rate of adoption will go exponential. Metcalfe will go super-exponential at that point, along with price.
It's an illusion. S curve has no vertical stage, just like an exponential curve doesn't have it. The rate of adoption is already (and had always been) exponential, that's why it looks like straight line on the log-scale chart. No. The rate of adoption is currently linear. The Metcalfe value is exponential. That is the number of unique addresses used per day, squared. Vertical is an expression. The middle of an S curve looks nearly vertical.
