We're already struggling with this, in our house, as we have people here who need simple nobs and buttons because of special needs, but they're all being eliminated to save money on interfaces. Now, you have to talk your appliances to death or page through complex menus or fumble around on finicky touch-screens.
*stand mutely in front of your toaster*
*frantically search for the buttons*
*find no buttons*
*cry*
*eat yogurt, instead*
