How is there a sequence and continuity in the life of Rama, an incarnation of the divine, as written by Valmiki before his existence?

According to Osho, Valmiki’s ‘pre-written’ Ramayana is a subtle Indian joke: Rama’s life was so bound to fixed ideals and rules that his responses were predictable, like an actor following a script. Such principled rigidity creates sequence and continuity, making his biography foreseeable—not a literal prophecy. By contrast, Krishna’s spontaneity defies foretelling.