The act of communicating a message can be divided into four separate styles, as adapted from the company theorists Tannenbaum and Schmidt. The two dimensions think how much you need to preserve control over your content and how much you need to involve your audience. The more you control satisfied, the less you involve your audience and equally, the more you involve your spectators in an appearance, the less control you have over the satisfied of that appearance. The four communication styles include tell, sell, consult, and join. The tell style gives information with the goal of teaching the viewers. In the sell method, you are persuading with the goal of convincing the audience to perform an action. In the consult style you are interacting with your audience with some control (as in a question-and-answer session). The goal of the "consult" style is to learn from the viewers. For a join style you and your audience are in collaboration to derive the content of the appearance (as in a brainstorming session).