And then there is the fact that voice isn't the dominant mode of expression for all people. Some are predominantly visual thinkers, some are analytic and slow t

And then there is the fact that voice isn't the dominant mode of expression for all people. Some are predominantly visual thinkers, some are analytic and slow to decide, while some prefer to use their hands and so on. I guess there's just no substitute for someone actually doing the work of figuring out the most appropriate HMI for a given task or situation, be it voice controls, touch screens, physical buttons or something else.