Slicing through subterranean exhibition halls that were previously university laboratories for research in accelerator physics, Lisa Tan’s first institutional show in Sweden tenders its own spatial logic through the metaphor of neurological disorders. Visitors are received by an ink-drawn diagram based on Oliver Sacks’s 1970 sketch of “migraine and neighboring disorders” (from a book said to have been written over just nine days, aided by an undisclosed psychoactive substance). Here, the diagram is superimposed on a detailed schematic of the galleries: I enter the exhibition through “protracted vegetative reactions.” Tan treats Sacks’s diagram as a tool, scaling it up to a dizzying and dysfunctional domestic space by way of partial walls which operate as spatial dividers, passages, atmospheric zones, and display environments. Rhythmic and austere, this site-specific installation of previous works lays bare the delicate negotiation between control and collapse on which our lives depend. As an organizing principle, Promise or Threat (2023) reveals how rooms are diagrams that shape the ways in which we interface with the world. We move like ghosts, seen and unseen, between spaces that give form to the inner self: the anxiety of a family dinner, the pressure of a deadline, the monotony of a …