Radical changes of identity, happening suddenly and in very brief intervals of time, have proved more deadly and destructive of human values than wars fought with hardware weapons.
It is always the psychic and social grounds, brought into play by each medium or technology, that readjust the balance of the hemispheres and of human sensibilities into equilibrium with those grounds.
While Poe and the Symbolists were exploring the irrational in literature, Freud had begun to explore the resonant figure/ground double-plot of the conscious and unconscious.
Once introduced discontinuity, once challenge any of the properties of visual space, and as they flow from each other, the whole conceptual framework collapses.