Is the play complete if every other scene is played out behind the curtain? Are you cheating the audience? What if they don't know? Is the play worse for the hidden scenes?
Or are there two plays, with two audiences? On each side of the curtain, a play, an audience, a cast. The central character goes back and forth, never in two places, but always fully present.
This is my life. There are people on either side of the stage, and too often I keep the curtain down, showing nobody the all action. Can I keep it honest if I split it in two? Am I being me, showing only half of me to each group?