- Kathleen lets the ball fall into the bowl to hear if there's still water
Expected +: good audio respons
Expected -: a lot of work just to know if there's water in the bowl
Tested +: good audio respons to know if there's still water
Tested -: bowl has to be completed empty to hear the difference
to much work for Kathleen
Kathleen doesn't like it
user experience:
designer experience:
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