Your challenge this time is to make conversational interface(s) for a smart microwave, maybe stand alone or as part of a smart kitchen. A model conversation between the user and the microwave will help with the design scope, as before, but the requirement for voice interaction will force us to think hard about how to implement each conversational element
By now, you will have designed analogue, digital, and conversational microwave interfaces, and hopefully abstracted some reusable design approaches.
About UX Puzzles for the Brainy
These puzzles show how, by taking the user’s point of view, we can generate ideas and select the best ones, innovate, avoid pitfalls, and generally make better thought-out user experiences. You can see the full list here http://theinformationartichoke.com/the-list-of-puzzles/
They are a fun way of presenting serious ideas about designing information rich solutions. For a more serious and systematic way, see “Experiencing + Architecting Information” at www.theinformationartichoke.com.