The universal metronome

Any physical system with a definite tension, density, and smallest scale has a natural frequency at which it vibrates. RSI applies this to the Eternal Consonance. Because the medium has all three properties, the theory holds that it must have a specific resonant frequency.

The frequency comes from combining two limits. The speed of light is the fastest a displacement can travel. The Planck length is the shortest distance the medium can resolve. As a wave at light speed crosses one Planck length, the fluid goes through one discrete cycle of tension and release.

This cycle repeats about 10⁴³ times per second. RSI calls it the background heartbeat of reality and the absolute frame rate of the cosmos. It serves as the steady metronome against which all mechanical fatigue is measured. In RSI, that fatigue is what we call time.

RSI proposes that the beat quickens and slows over the cycle as the medium's folding breathes (Chapter VI). Every clock counts these same beats, so measured locally the frequency is the same in every era.