In the middle of a stage play actor Michael Sheen broke character and asked an audience member to switch off their phone. He understands that all work is a work of co-creation and if the other party is not working with you, egging you on and encouraging you then they are not doing their part - they are actually tearing you down. He is a professional and so are you. I am not asking you to halt a performance at The National Theatre. But I am asking you to demand that you get the attention you deserve.