This lecture covers the complexity scale of flexure mechanisms and structures, including flexure bearings and hinges. It explores the degrees of freedom in flexure joints, their notations, and the stiffness of flexure joints. The parasitic motion of leaf springs and rods in translation and rotation is discussed, along with the consequences of conflicts between flexure joints. The lecture also delves into the blocked and free degrees of freedom in flexure bearings, highlighting the implications of conflicts and stresses induced in the system.