Right, it’s a “log-linear” plot, where taking the logarithm of both sides of an equation straightens it out. What strikes me right away is that the earth comes along and it doesn’t do anything to the graph, lol, almost like it doesn’t make a whit of difference in how the process progresses, when obviously, it must. You’re not going to get whales, people, trees, etc., evolving in deep space. So they could have at least changed the slope at that point.
Ditto for The Great Oxygen Catastrophe, when photosynthesis destroyed the then prevailing atmosphere. Isn't an oxygen based system more energy efficient than an anaerobic methane based system? Wouldn't that accelerate the rate?
Also, if the doubling time of complexity has reached about every 20 years where are all the newly advanced life forms & super-duper supermen?