A pointed critique of the current regime of safety-consciousness, “Warnings & Instructions,” James Gilbert’s recent exhibition, took as its starting point a cartoonlike replica of a plane crash: an almost life-size fuselage, severed into three sections, and two lifeboats, all arrayed across the expansive floor of Dallas Contemporary’s new space. Made from safety-orange plywood armatures covered by a patchwork of plastic in various shades of pink, these structures had the plump proportions and candy colors of toys. To further emphasize the disturbing blitheness, Gilbert embellished the lifeboats