written to reduce the tension between  Barbara and Ian. In the original script, Ian says: "When Ive had a  bad day, I come in here [the staff room], and I want to smash all  the windows.". Barbara retorts: "It hasnt been a bad day", and Ian  remarks: "Youre just naturally like that?". Barbara: "I hope not.  Ive had another kind of day. A very puzzling kind of day".