Making Faces In the Subway, Using Paper And Scissors.

At the foot of a Union Square subway platform staircase, an artist focused on his delicate work, maneuvering a fold of black origami paper along half-open scissor blades. ''Scissor doesn't move, only paper moves,'' he said to the rider posing for him. ''Nice young man,'' he bantered. ''How old are you? Like your hair.'' [ABSTRACT FROM AUTHOR]