Interpreting Stage Directions in Drama

In plays by noted playwrights, stage directions can serve multiple functions, including establishing atmosphere, revealing character intent, and guiding emotional responses. Consider a hypothetical play where the following stage direction appears:

'As the lights dim, a single spotlight follows the protagonist as they slowly move to center stage, their shoulders slumped and head bowed.' Based on this direction, how might the audience interpret the protagonist's state of mind?