Jack is at it again, pet peeve pondering the bete noire of human evolution. How did it all begin, and what were the crucial turning points?
How much weight should be given to this idea of orthogeny recapitulating phylogeny; the developing embryo enacting a sort of condensed replay of its racial history?
To Recapitulate It seems intuitively fitting. What More likely pattern of unfolding forth Should ovum blastulated notochorded Tadpole nymph embudded fetus follow, Than that which led to its existence to Begin with? But if it does apply, what do We make of the neotenous implications Inherent in the foramen magnum's Erect posture situation in The chimpanzee fetus? The spinal chord Departs the brain in such a way, at such A place, as strongly to imply an upright Gait. But then, with parturition looming Near, there is a gradual correction, To bring it back to its respectable And orthodox ape world positioning For all-four locomotion. But all agreement On the chimp or any simian ancestry Belies the implication; it never walked Upright. And neither did its atavistic Cousin father forebears. And stranger still That physiognomy non prognathous Of that same beastie portrays a modern Human baby look, as if worn by eons Back spent generations of some proto Apes, and then foregone again before The human race was thought of.
There has to be a logic to some portions Of the building plan, completely separate From the paradigm, some inescapable Requirements, to validate the scaffolding.