A farmer uses a primitive moldboard plowto till his farmland in U.S.(Thursday is Luddite Day at bpa)From wikipedia: Mouldboard ploughA major advance in plough design was the mouldboard plough (American spelling: moldboard plow), which aided the cutting blade. The coulter, knife or skeith cuts vertically into the ground just ahead of the share (or frog) a wedge-shaped surface to the front and