>Someone needs to explain this to bacteria. They are the predominate
>life form on earth and have been evolving for the longest period of time.
>Yet there is no clear trend that bacteria have increased their complexity
>to fill every available niche.
>As a direct descendant of a bacterium (or more realistically, at least
>*two* bacterial lineages), I question the suggestion that we've not
>increased our complexity over the course of evolution.
I see. One lineage out of millions. I guess for some the exception
does prove the rule.