"never fail user expectations" is often repeated in the User Experience
fields. Consistency is important, but what about innovation? New ways of
interaction assumes that some or all of the expectations of the user will
fail. If the new interaction may work better than the old one, why not try
it? If indeed this new interaction is better, it is possible only because
the "never fail user expectations" idea was ignored.
A case in study is the Wii-mote. In the interview Iwata Asks...