Systems call to mind the grandiose, sweeping, and entrenched, for better or worse. Systems of belief, systems theory, the prison system … By comparison, Nancy Holt’s Systems Works, a body of sculptural installations made between 1981 and 1992, are decidedly humble and pointedly unfixed, mutable. The Systems harness the mechanisms all around us, confronting the viewer with the stuff of ventilation, heating, and electricity: fans and fixtures, steel conduits and wiring, infrastructure filleted from walls and floorboards like pinbones from a salmon. But the American artist, who died in 2014, was never interested in the frisson of the reveal. How we condition our environment has ramifications far beyond our immediate needs and desires, and Holt believed her unmasking of these systems to be a political act. . .