Various disciplines have their own institutional histories, agendas, legacy equipment, ways of constructing knowledge. Some seem to be incompatible ways of knowing. They form nearly autonomous subcultures.
Disciplines are subcultures designed to reproduce themeselves and resist external influences.
But most advances in the human sciences come from multidisciplinary thinking. How to create a curriculum motivated by what's happening the in the real world since the Internet revolution. Thus, medium and mediation. I am Decalogue, Francois Villon, Lenin, and Macintosh, I am pictogram and alphabet, text and hypertext, manuscript, printed page, and radiating screen. This is a media ecology view.