What can be said about long lines drawn in a single stroke?

Long lines drawn in a single stroke tend to be curved due to the natural movement and limitations of the human hand and arm. When attempting to draw extended lines without interruption, slight variances in the angle and pressure applied can cause the line to deviate from being perfectly straight. This phenomenon is influenced by muscle coordination and the way the wrist and fingers interact while making the stroke.

In practice, straight lines may be more easily achieved using tools such as rulers or straightedges, but when relying solely on manual drawing techniques, curvature often becomes inevitable over longer distances. This understanding is essential for artists, architects, and designers who are focused on precision in their drawings. Recognizing the tendency for long strokes to curve can help inform choices about techniques and tools used in drawing.