No, I am not trying to be Edward Lear. This riddle came to me last week as I sat in the chair at the hairdressing salon. My head was being wrapped in bits of aluminium foil in an effort to create some sort of baked-potato-with-bristles look. The stylist was remembering her early days when it was difficult to cut a level hair-line at the nape of the neck. She was unable to explain how her skill had developed except for practice but she said somehow it works for her every time now.
It reminded me of painting horizons. They are more often level for me these days. As for any line, I think the trick is looking at the target point rather than watching the brush. The most common problem for me is not having enough paint on the brush to reach the other side of the canvas! Some horizons are rougher than others and I like that.
So the answer to the riddle is? Possibly another riddle…?