"That's what my best girl is for." he said, giving Merlin the command to stand up again. He patted the dog's side, smiling broadly. "She keeps me from tripping, running into something or someone, and generally helps me get around. I guess I could let the city give me directions and guidance, but Merlin is much more reliable."

He then said, "City, directions from current position?"

"TWO BLOCKS NORTH, ONE WEST. SECOND DOOR ON YOUR RIGHT. A SPOKEN MENU WILL BE PROVIDED."