That then heavily limits what the person can be asked to do or, in some cases, sign up for, reducing the effectiveness of the person further.

If a task were given, for example, to come up with three characters with different voices that needed to interact for the purposes of a storyline mission, one person might come up with the scenario and three separate people would be asked to write for each of the characters. All of the people involved in writing the mission would need to consult with each other, for clarification, suggestions and suchlike.

One person could probably try to do all of it himself (or herself), but would come up with something far less interesting than the four people working together.