The piece: "Time Machine: Through the Walls of a Time Traveler" The artist: Justin Garcia Where: Nicole Longnecker Gallery, through Wednesday Why: I can't decide if Garcia's installation is brilliant, insane or just audacious. Alongside groupings of paintings that look like fragments of ancient walls are a gazillion tiny drawings, diagrams, small photographs and Post-It notes, connected by red string that zips up to the ceiling and back, across the room, just in case visitors don't realize all the ephemera is connected.