Now that Flight MH370 has been declared lost in the Indian Ocean, the search for the remnants of the crashed plane takes on a new dimension. There is a gap between the official knowledge, based on a mathematical inference concerning the plane’s speed, flightpath and fuel volume, and the empirical knowledge of the human senses. For some of the families of passengers on-board, this is the only knowledge that matters and they remain suspended in an existential limbo, refusing to accept their loved ones are dead. Meanwhile, the search in the Indian Ocean proceeds from a perception of quasi-objects that have an almost hallucinatory intensity. Pieces of fuselage lurk in the grain of satellite images, safety belts and cargo pallets are conjured by spotter planes zooming over the sea, while ships crawl towards designated coordinates wishing to verify the ghostly sightings. Only when the gap in knowledge is closed, can mourning hope to have an end. For more on the ‘science of ghosts’, see http://www.youtube.com/watch?v=0nmu3uwqzbI