The Oracle at Elsewhere was built and shown at Elsewhere as part of a competitive residency. At a public performance, petitioners were asked to pour a libation, choose an avatar, ask a question and then place the avatar on the altar (a disused heater housing—ed.), at which point the heater roared to life, and the petitioner’s question was answered by a laser crosshair spelling it out letter by letter by pointing to Ouija-like quilt.
The Oracle is infallible—it just doesn't always answer the question that you ask...