The composition of the lines is an element that best provides insight into the way the poet organizes thoughts and ideas.
Labor-saving devices are inventions that reduce the time and effort needed to perform or complete a task. Farm equipment, home appliances and construction equipment are examples of mechanical inventions that save time and physical labor.
maybe the author just want to keep that info secret and the story maybe not true at all so author doesn't want to tell readers, that what I think!