Shakespeare's Theatrical Superstition

Francis mac dorman, has taken to calling it the tragedy. The idea is that if you say the name of the scottish king in a theatre, it's bad luck. Alexander teacher at drama school said that you're not allowed to have r real flowers on stage,. Don't know why, ir you're not alowed to whistle in a theatre but the whistling is to do with people tra osping sandbags on your head. I think thre's some sort of roll play in that we like superstitions in the theatre.