Devising is the business of creating performance material from anything except a play-text. Material most usually comes from the feelings, opinions and experiences of the participants who devise the work collaboratively. Devising offers participants a huge amount of control and ownership over the shape, content and structure of the performance. It also allows them to choose the extent to which they wish to be involved in the finished product. Many people find devising difficult at first because there is no script with which to begin, there are usually no characters or situations, and sometimes there is no theme. Often it is a completely blank slate – rather like a white page facing a writer – simultaneously attractive in that it offers endless possibilities for creation, and equally repulsive in that it challenges the group to begin with nothing but themselves.