Before an interaction with another, an individual prepares a role, or impression, that he or she wants to make on the other. These roles are subject to what is, in theater, termed "breaking character". Inopportune intrusions may occur in which a backstage performance is interrupted by someone who is not meant to see it. In addition, there are examples of how the audience for any personal performance plays a part in determining the course it takes: how typically we ignore many performance flaws out of tact, such as if someone trips or spits as they speak.