If a man closing in on 60 can dribble three basketballs for the 10 miles that makeup the Crim 10 Miler at a 9:30-per-mile clip,when most 20- and 30-year-olds can't --in their current condition --conceive of running 10 miles at any speed, then just maybe agingdoesn't have to be the unrelenting downhill slide to the gravethat has been generally accepted as gospel. Maybe we can continue to excel andoutperform those decades younger than we,as Riley McLincha isdoing.But will we?