Raykby tightened his grip. Determinable systems announced deviations in numbers. They did not perform metaphors.

The extra quality module pulsed once, almost like a wink.

Raykby ran pre-flight checks with ritual precision. The readings hummed obediently. Determinable systems liked to be observed; they relaxed under attention. He felt a quiet satisfaction as the v020’s extra quality module idled, a faint luminescence on the chrome strip like a cat’s eye.

Pilot Raykby kept listening. Over weeks, the network of v020s, given the space to be more than perfect instruments, began to sing in small, private ways — chirps that meant “watch out” or “follow this current,” trills that meant “good day.” Engineers reclassified the phenomena as “emergent extra-quality signaling.” Philosophers wrote think pieces about machines that wanted to be known. Children began to leave tiny tunes on maintenance panels like offerings.

The pattern, once an annoyance, began to convey. Not numbers, but intervals: a long hum, two short chirps, a staccato like percussion, then silence. When Raykby hummed it back in the cabin, the strip responded with a flourish, as if pleased. When he ignored it, the hum would become faintly resentful, a mechanical throat clearing.