As an actor, you're always at the service of somebody else's vision. In a play, it's more of the director's vision, and he or she's got their hands on you all the way up to opening night, and if it's a film, there are even more people. ↗
A schedule defends from chaos and whim. It is a net for catching days. It is a scaffolding on which a worker can stand and labor with both hands at sections of time. ↗