To puzzle over Cildo Meireles’s exhibition One and Some Chairs/Camouflages is simultaneously dumbfounding and appealing. There’s a new playfulness in his work that makes us ponder the what and why of perception, the way we understand what we see, and how the object depends on how we see it. We expect austerity in this conceptualist’s creations, which are familiarly recognized as elegant and monotone, and often installed with expanses of sand spread across a gallery’s floor made to resemble an indoor desert.