The discussion on the topic of simplicity and complexity seems never end. People likes the complex sky with colorful cloud; driver likes to see the simple road sign; Apple designers can design iPod as simple as possible; but airplane engineers should never consider simplicity as their primary design goal. By this I mean there is no clear defination to tell us what we should do. Simplicity and complexity are both important in certain circumstance.
Here is the video by John Maeda about his simple life.