Sculpture is an entirely different and unique art form; it is tangible and interactive, and almost begs to be touched. Whenever I am strolling through an exhibition and come across a sculpture, I have the sudden urge to touch the surface of it to feel the texture of the piece. I resist this urge and observe from afar, like any dignified museum-goer, but it always makes me wonder why human beings feel the need to respond physically to an art form.