To think about
¢ What types of information do these various UI need
to calculate at run-time and what types can be pre-
computed?
¢ How do these UI support the tenets we mentioned
at the beginning?
¢ Do you feel that HTML / WWW has enhanced UI
design or deterred its creativity?
¢ For images and audio:
l When is query by example a useful technique and
when is it inferior to a search using metadata?