Words can sometimes limit creativity. Humans are generally very visual and have evolved to sense the world primarily thorough focused looking and observation. As a result, a large part of the brain is dedicated to visual processing.
To analyse problems we can tap into this huge potential processing power by visualising problems. There have been many studies in this area which has led to exceptionally useful tools such as mind maps which are great for creative thinking.
This exercise helps delegates to express a problem using images. It is much more free flow than mind maps as it is not restricted to any particular method. This allows people to think more visually about a problem and break through the limitations imposed by thinking primarily in words.
Pictorial problem solving is also ideal for brainstorming as it makes it easier to communicate ideas.