Neville Gabie has made patience his métier. His new show at Danielle Arnaud, a selection from the ongoing project Experiments in Black and White, testifies to that. Take his two Hours of Darkness pieces (2016–17). Standing outdoors from exactly sunset to exactly sunrise, with a ruler and a set of gel pens, Gabie drew smooth vertical strokes on black paper, each one a fraction to the right of the last. The result looks like two tall barcodes, the winter one long and the summer one short.