Go through the research and design issues for each interface and consider whether they are relevant for the game setting and what issues they raise. for the wearable interface, issues to do with comfort and hygiene are important when designing the game.

An electric kettle is made out of stainless steel, weighs two pounds (when empty) and is equipped with a heating element that consumes 2 kw of electricity. assuming that the water and the kettle are at the same uniform temperature at any moment of time, calculate the shortest possible time to bring 2 quarts of water from room temperature to the onset of boiling