Open system theory refers to how an organizational structure affects the flow of ... if a salesperson is required to give a 30-minute presentation to every prospect, this is a closed system.

Still, the aim of this element is unchanged — namely, preparing the audience for the structure of the body. The opening of a presentation can best state the presentation's main message ...

Here are 5 quick ways to structure a speech that will get you from blank computer screen to presentation in no time. 1. When you’re persuading an audience . . . use the Problem-Solution Structure.