Superstition: It is bad luck to have mirrors on stage.
The myth is that many believe that mirrors are a reflection of the soul and breaking one can mean seven years bad luck, not only for the breaker but for the theater itself. However, having a mirror on stage can cause technical issues, such as reflecting light into the audience or into places never intended to be lit. It can also be a source of distraction for vain actors. The mirror superstition has since been challenged with the successful musical Chorus Line, and its famous mirror scene.
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