It seems to me that an overarching problem in technology design is that developers are often removed from the industries their products are designed to serve. This is especially true in the kitchen, where there is a great deal of opportunity, but also a vast disconnect between most techies and their potential foodie customers. I think that you really hit on a key hook: keeping things sanitary. For a simple example, I have seen many people use their iPhone or Android timers. I think that one of the biggest obstacles that will need to be overcome to this and will be microphone filtering such that the clangs and bangs of a busy kitchen do not interfere with voice recognition. Thanks for a great, thought-provoking piece!