While I'm on the subject of the geometry of the hand and body and how an understanding of the workings of the body can give greater effectiveness to creative work, I want to share these early Sloyd illustrations used to emphasize the importance of posture on the effectiveness and accuracy of work. Conversely, these illustrations also showed the usefulness of Sloyd woodworking in the development of the physical body. These illustrations were commissioned by Otto Salomon at Nääs and distributed throughout the world in the late 1800's. While modern education places little emphasis on proper posture in the learning environment, most teachers can tell in a glance which students are listening, which students care, which students get the material and which students will inevitably fall behind. There is a deep connection between the body and the mind, and learning is best when it engages both.