Sci-Fi Thought Experiment

A kind of hominid on a planet like ours has evolved with a head that is tilted at a 90º angle, so that the chin of the skull fuses with the top of the chest; the survival of the species is miraculous and a result of an astoundingly high mean intelligence. Forward motion induces vertigo for these creatures' being unable to set their eyes on a point in the middle distance, as we do; they survived for ages in sheer cliff dwellings, are excellent climbers, and have developed a civilization that ingeniously accommodates their apparent biological deformity. Unable to look up at the sky or out at their larger surroundings without great difficulty, they have constructed enormous cities with tiny architectural footprints; these towers are built to resemble the cliffs that sheltered the species in the early days of its history.

To compensate with technology for the cruel genetic hand that nature somehow dealt them, these creatures have devised a video monitor system that affixes to their clothing with a special apparatus; it displays an image directly under the earth-pointed face of its wearer. The image is of the area directly in front of the creature, and so mimics what we understand to be normal human sight. Rapid forward motion, however—whether from running or piloting a vehicle—is experienced as psychically akin to falling, because falling is the only visual analogue available to them for it. Genetic memory therefore makes long-distance travel terrifying, and the new technology has inspired a genre of fiction that mythologizes horizontal motion, and plumbs the psychological depths of the minds of those so unfortunate as to undergo it. In these works, which are intelligible to us as poetry, a full-speed run may tear a rip in the fabric of reality, and pilots spontaneously catch fire, and walking around on the ground outside a village may cause it to collapse into a sudden abyss. Speed as such is a cultural wellspring of dread and provides a context in which daring and fear alike are made manifest.