There was this interesting article posted here some time ago that plotted the complexity of life found on earth vs time, and by using the right methodology and logarithmic scales, it arrived at a nice linear line over many data points and several billions of years. And the line converged to a 0 point, but that point was a few billion years before earth was created 4.5 billion years ago, adding more credibility to a panspermia theory. Can anybody remember that article and its url?