Hehe, I have a bachelor’s in math and a master’s in stats. However, I hesitate to call myself a mathematician or a statistician or a probabilist or anything like that. In grad school, you quickly learn those titles are reserved for PhDs. But... I might be able to answer your question.
fire away. the questions are I believe ... are the ratios correct for the known period of life on earth. that is does complexity or whatever increase at the rate the author says it increases.
also why would it not start at zero complexity or whatever x billion years ago on earth.