Does a Good User Interface Obviate the Need for Documentation?

This question was raised on a programmer's group recently and I was intrigued. The programmer's point was that with many web applications these days there is no print documentation distributed to end users, and even if it existed, many users won't read it although this makes me wonder who's buying all those how-to books I see in the bookstore. The programmer suggested that applications should be designed without documentation and wondered about the impact that would have on design.

Sprezzatura Systems (2002). Articles>Documentation>User Interface>Software