“Several years ago the artist Nina Katchadourian found herself staring up at the sky full of office windows in Times Square and thinking about the faceless occupants behind them. ‘You think, “My God, all those anonymous people up there, living and working,” ‘ she said. ‘There’s this sense of so much detachment between interior and exterior.’ With the cooperation of one of those anonymous people and the help of the Public Art Fund, Ms. Katchadourian is now trying to build a bridge — or at least, as she says, stretch a tenuous thread — between those two worlds.”