Within Blueprint for a Prophet, the astrophysicist Maira analogises the progression of time to three entities of differing magnitude who stroll a coastline: an ant, a man and a giant.[16] These entities, as theorised in Blueprint for a Prophet, will (a) devise a meter corresponding to its own magnitude and therefore (b) perceive the fractal distance differently in proportion to the size. Analogously, the passage of time is relative to the agent and his mass, density and volume.