Well perhaps the kind of sterile style mentioned earlier gets at this - a gradual defamiliarization from all of yourself, and the head is just the tip of the corporeal springboard, the last point of contact - or perhaps where the umbilical cord, bound by physics, ineluctably ties your being to you.
A sort of fission of intelligence from matter.
But poetry can't just be a spandrel, a sideshow. It wouldn't have built the momentum it has - as far as I can tell. Arguably, its purgative function is the central redeemer, from a sort of psycho-evolutionary standpoint, no?
edit: that is, it served as an incorporeal outlet for vital energy, energy that would have combusted and self-destroyed otherwise.
And to
@version on the internet: sure, but how much has
really been done from a perspective where the pre-internet world is complete history? I mean I'm only on the cusp of it myself, agewise. It feels like the generational geist is accelerating.