Absolutely vital to Mills's concept is the transformation of programming "from private art to public practice" by making all the computer runs visible to all team members and identifying all programs and data as team property, not private property.
Note: The inverse of this can be seen where each person in a project is working in a silo, they know there section like the back of their hand but the rest of the team is in the dark. Even if they did share their knowledge the listener may not even care as they are too caught up with their own little corner of the code base.