Forgive me if this has been talked about on the list and I missed
it. But... I've had several discussions with folks recently about the
evaluation of "good" interaction design. One side of the debate seems
to side with efficiency metrics: completion times, error rates,
reduced interruptions, etc. The argument goes that good interaction
design can be measured by the user's ability to perform a task as
quickly and efficiently as possible.
The other side side of the discussion thinks there's more to
successful interaction design than transparency (getting out of the
way so people can perform tasks). Here engagement, utility, delight,
and narrative come into play. That's not to say task completion isn't
important, its just that it doesn't paint a complete picture of
Any thoughts? What's the criteria by which you judge a "good"
interaction design? Or is it so context-specific that across the
board metrics don't apply?