I hadn't thought about it that way. Would we truly notice that our lives were scripted? It would have to be a noticeable amount of control.
Along those lines did you ever see the film called The Adjustment Bureau? Its a light suspense dating flick with speculative fiction. Its based on idea of a world with a flexible scripting, so that people don't notice they are under control of a superhuman bureau that has dimensional portals all over the world and agents that go about changing people's life with small adjustments. In this film the bureau is a superhuman secret agency which controls and monitors the lives of all humans. They never say why the bureau exists or what the plan is for humanity, but the plot revolves around two lovers who resist the script so hard that they discover the bureau and that it is responsible for a lot of their personal suffering.
Hollywood seem to pick triplets for fame: Carry Grant, Jimmy Stewart and Humphrey Bogart. They all look kind of similar, so you could do the cup game with them. Pick a decade and there's a triplet. A recent/current triplet is Damon, Whalberg and Ed Norton. Triplets. Now tell me there's nothing scripted about that! Its a plot. I look like Columbo but live in the wrong decade, so I get no fame out of it.
If we live in a prison but have friends in that prison and don't know we're in prison, then is it a prison?