If you're barefoot, far better to pass under Steghorn and Daubenhorn. Even Ötzi had grass-insulated moccasins: https://exarc.net/issue-2023-2/at/reconstructing-otzis-shoes
Lagniappe: https://www.youtube.com/watch?v=sWOUi0PVTXw
(does discriminating by ranges of continuous spectra instead of at monochromatic points bring us back to Banach?)
Also: “cardboard” as a metaphor for the inevitable reduction in dimensions (here, of “personalities”)
Banach: if you mean the eponymous space, yes, are you returning to the county in “quantum-gravity”? Or maybe you refer to the theorem with Tarski?
Cardboard as box (and as space filling surface?) is a very nice interpretation; I'd been thinking of "singing to a backing track/lipsyncing" in which phonogramma gets shortened to phanera which machine translates for me as "singing under cardboard"...