Bobber. Bobber.
When a Mark is weaving nets out of seagrass or chipping a shell, the head moves at roughly 1 Hz (one bob per second). This is the subconscious bob. It’s the ghost of their ancestry—a necessary reflex to judge the distance of the tool from the material. If a Mark stops this bob entirely, they are likely distressed or staring at a flat horizon. marks head bobbers serina