The Dream state: Are we living in a dream?

Recently I had this idea about the future, in which we could live a character in a movie. A truly immersive experience that would be! Imagine being a character in your favourite movie and seeing the world through his eyes. I also watched a k-drama recently that was called “Extraordinary You”. Its concept really fascinated me. A girl discovers that she is living in a comic book as a character whose fate is dependent on the writer’s whims! The brighter side to the story was that her character was determined to find a way to change her story by acting in between the scenes. So imagine watching/living a truly immersive movie like that in which you can live the life of the character and you *have* the power to change the story by acting in between the scenes. Now a question arises that, “If we can imagine and create such an experience in the future, what makes us think that we’re not currently living in one such movie?” Remember the whole so-called theory of living in the matrix...