I heard about a study the other day that showed the speed people walk is related to the number of years they will live. Faster walkers live longer. If this is true, my father may live forever. He is the man who doesn’t take cabs when we visit New York City. Nor do we ride the subway. We walk. This is no take-your-time-see-the-sights walking; this is man-on-a-mission walking. I thought of him Saturday as I sped by the throngs of tourists on the streets of downtown Asheville, attempting to get to the Fine Arts Theater in time for a movie.