I've recently conceded to the argument that it's impossible to solve the problem without first defining the role and function of the companies. I believe that should be at the center of Senate questioning, not because it's comfortable, but because it is necessary.

I cooked eggs this morning. There is a diversity of wonderful eggs and even some bad eggs. Is the Twitter service a) the eggs, b) the pan, c) the stove, or d) the hen-to-table service of providing a delicious breakfast?