The septum is reasonably firm. It is made up of cartilage and bone. Simple pushing on the septum with your finger will not move the septum anymore than pushing your (cartilagenous) tip of your nose will move your nose to the side. During septoplasty, the cartilage is scored, morsalized, and contoured via surgical means, so as to change its position. These surgical measures are required to move the cartilage into a new position.