Reasons for limitations to travel are many and restrictions can either be self-imposed or come from outside. Consider:house arrests or imprisonment, border restrictions, financial conditions, passport limitations, etc.
How a travel ban made an artist think of different ways of dissemination. The show has no director or set and a new actor for each performance. The writer's voice is an integral aspect of the script and though he is not present one can feel his presence. As part of the script the writer's email is shared with the audience so they can write to him and share their thoughts.