She stands with one pair of arms outstretched, while a second pair arch gracefully behind her. She gathers up the streams of water flowing from the hem of her gown -- or do they actually flow from her body? “Arria,’’ the colossal statue created for Cumbernauld, Scotland by sculptor Andy Scott, beautifully exemplifies this artist’s life-long commitment to the classical tradition of sculpture and to giving modern communities a taste of what their ancestors often took for granted: an awe-inspiring public statue that is also a comforting visual anchor in the landscape.