The document discusses collaborative sketching for user experience design. It describes how sketching has become more common both as a design tool and in the workplace. Sketching enables communication, makes concepts concrete, facilitates iteration and collaboration. The document provides examples of how a design firm uses sketching in their process, from solo sketches to collaborative sketching as a team. It presents advice from experts on sketching, describing it as a quick, inexpensive way to explore ideas before fully designing a solution.