====== When using DCI with MVC, is it ok to let Views and Controllers play Roles in a Context? ======
A View is an object, so a View can play a Role. RoleMethods could actually update the View, this is more direct than using the observer pattern, for example.

Since Controllers are objects too, naturally they can play a Role as well. This could be useful if the Controller has some state that will change its behavior, for example [[http://msdn.microsoft.com/en-us/library/system.web.mvc.controller.modelstate(v=vs.118).aspx|Controller.ModelState]] in ASP.NET MVC.