For this show, “Concordia, Concordia,” the Swiss provocateur recreates the interior of the luxury cruise liner that ran aground off the coast of Italy last January. With the ship’s floor lining the wall and heaps of ersatz wreckage filling the space, the installation reflects the infamous and fatal disaster. But the artist couldn’t resist some comic touches, like sneaking in a torn reproduction of Gericault’s Raft of the Medusa.