I know what are you thinking. Are you thinking of sneaking to those prohibitive places where you can't go currently? Or being in the room where the school is having its closed door meeting? Well, those dreams of yours have to wait. Even though our scientists here have for the first time engineered 3-D materials that can reverse the natural direction of visible and near-infrared light, which could render objects invisible to the human eye, I think we still have a long way to go. To achieve total invisibility, the metamaterials would have to bend light waves completely around the object like a river flowing around a rock. If invisibility does indeed become a reality, I can't imagine what would happen if the "invisible" material fall into the wrong hands. It might made this world a worse place to live in.