"The best design is invisible" = false. "Good design is as little design as possible" = true. Pretty different concepts.
Trying to define good design is like trying to define good literature. Are you trying to convince the user, force the user, agitate the user, guilt trip the user, motivate the user, educate/train the user, de-educate/un-train the user, empower the user, de-empower the user, force the user to conform, force the user to rebel... its all going to be different both for lit and for design work.
All I know is that I tend to do what ever works best for a given situation.... I think.