Tale told by a fool, full of sound and fury signifying nothing! Just finished Nick Lanes book - The vital question, why is life the way it is. Us are Eucaryotes, a symbiotic union of two bacterial kingdoms. Result of necessity is always two sexes, because of the massive numbers of mitochondria as intracellular powerhouses. Mortality, Aging Soma death, and doing our all for our immortal Germ lines. End of the book, hints of deep sea bacteria trying to evolve a replacement line, Both the old and new lines likely to go extinct. Looking forward to net zero human beings, our current paths.