Autumn is a delightful time for cycling, and unfortunately for running, too, which means almost daily encounters with one of my least favorite Japanese words: jama. Jama, 邪魔, literally translates as “evil magic,” but means something like hinderance, impedance, or, as I prefer, bloody nuisance. Autumn brings out all the joggers onto the Tama Cycling Road and, despite a perfectly good path below the levy on which the track for cyclists has been made, runners take over the path. They’d be fine if they kept to the rules and ran to the edges of the path, but rare is the…