Final answer:
The excerpt's reference to Henry Ford is an example of an allusion, which is a figurative language technique that indirectly mentions a famous person to enrich the text.
Step-by-step explanation:
The reference to Henry Ford in the excerpt from "The Unseen Values" is an example of an allusion. An allusion is a figurative language technique where the author refers to a well-known person, event, or object in history or literature to make a comparison or to bring to mind the characteristics of that person, event, or object without explicitly mentioning it. The allusion to Henry Ford, who is known for revolutionizing the automobile industry by creating the Model T and the assembly line technique of mass production, adds depth to the author's argument about not underestimating the potential of new ideas or technologies.