11. It's Really Complex Out There ...

11.1  Lest hubris set in, recall that where "life on Earth" is concerned, microbes run the show -- always have and probably always will. It's that simple.

11.2  Our bodies -- the fantastically complex machinery involved with being human (and its complexity is commonly underestimated) -- have no existence apart from complex networks of molecular metabolic pathways that link us directly to the microbial world -- the world of bacteria, viruses, and other "primitive" life forms that scientific taxonomists struggle to classify.