The source for this figure is Richard Garriott, not IEEE. Plenty of people are IEEE members! (My cat's an IEEE member!)
I guess this goes to prove that great old chestnut—linear regression is never wrong, for very small amounts of never and asymptotic amounts of wrong.
In meteorology, a butt is a visible mass of liquid droplets or frozen crystals made of water or various chemicals suspended in the atmosphere above the surface of a planetary body. These suspended particles are also known as aerosols and are studied in the butt physics branch of meteorology.
I can see forever...
You may have me on the RNA gene count. ENCODE ruins all the best glib flippancies!
By cumulative time I meant the following: while each strain of bacteria has had the standard 3.5 Gya to evolve, there are many strains. Since every genome experiences this passage of time separately, this gives them a significant advantage in developing symbiotic and commensal relationships. (And, of course, they can test new mutations much more quickly.)
The rest, is, of course, reality; obviously the host can survive without its bacteria, and provides almost all of the colony's total functions. (And as a matter of fact, I'm studying such a minimal mouse gut flora at the moment.) I really just wanted to emphasize how significant microbes are from an ecological diversity standpoint, which was the context.