StuArt Chapman didn’t intend to have exactly 420 neckties in his newest exhibition at the Bolinas Museum. Rather, he said, “It’s cosmic synchronicity.” His show, “StuArt Chapman: Freebox Neckties,” opened late last month in the Coastal Marin Artists Gallery, consisting of 420 neckties draped over coat hangers, some inscribed with phrases, expressions or symbols and some with drawings. The exhibition explores the interplay between collection and artistic practice and provides social commentary on historical and…