In the fields of information science, communication, and industrial design, there is debate over the meaning of interactivity. In the "contingency view" of interactivity, there are three levels:

1. Noninteractive, when a message is not related to previous messages;
2. Reactive, when a message is related only to one immediately previous message; and
3. Interactive, when a message is related to a number of previous messages and to the relationship between them.