Our forebears worked this out millenia ago. Ontogeny recapitulates phylogeny. In a beautiful and natural way of paying homage to the past that produced us, the individual embryo flashes through stages that recapitulate the phyla from which we evolved. It may not be science, but as poetry it should be more than just amusing. Good poetry provides insights that are not always entirely rational-but then, neither is the human mind.
Good poetry can make good frames.
I see our pre-agricultural ancestors as living in a stage analogous to infancy for the species as a whole. The neolithic marked the change from infancy to childhood, and the present era marks the transition to adolescence. But that fourteen year-old has a new and more vibrant vision of what life is all about than he did before his glands started churning in him, and in more or less profound ways something analogous is happening to humanity as a whole, right now, in this present foreshortened era of turbulent change.