Voice needs no physical mode-switching. Ask and receive regardless of whether you've got your hands full doing something else, or looking at something else, or

Voice needs no physical mode-switching. Ask and receive regardless of whether you've got your hands full doing something else, or looking at something else, or don't have your phone super-glued to your person. There's also no tangential distraction when looking up information. If I'm going to travel I can ask for the forecast (daily or weekly) at places along the way without getting bogged down with unrelated web browsing or advertising.