Many believe with the rise of wearable technology and the emergence of the Internet of Things, we are witnessing the start of the 6th wave of computing: ubiquitous computing and machine learning. Wearables and other smart devices can interact with other objects and swap information with intelligent clouds. In such a world, human-computer interactions will no longer be satisfactorily mediated by the traditional smartphone visual-tactile user interface. Voice is potentially a far more effective medium for enabling quick, real-time interactions.