Topic 11: Describing, Comparing, and Contrasting Shapes When we present an audience with unfamiliar and complicated pictures or diagrams, we have to take special care for them to see what we want them to see. It is very easy to forget that members of the audience may not know where to focus their attention, and even if they do they may not know how to interpret what they see. This week we use various pictures and diagrams to practice directing the audience’s attention to the desired place and telling them how to interpret what they see there.