"I think sermons suffer greatly for lack of ambiguity." (Eugene Peterson)

He said this in passing during a conference and was referring to the pressure we as preachers feel to constantly tell people what to do. He didn't elaborate much other than to say "we want to tell people to much."

In context, he was talking about application not interpretation proper. His point, I think, is that we try to make our application so precise. We "spoon-feed" people a list of three points to implement in their life rather than leaving room for the Spirit to give them personal application and training them to wrestle with the Lord personally about how they need to respond.

I think suggesting applications for people is helpful, but Peterson's point is an interesting thought.