If Robinson Crusoe was farsighted while Friday was nearsighted. The eyeglasses that they use whenever they wanted to start a fire by focusing the sun's rays is that of Robinson Crusoe's.
Robinson Crusoe
Robinson Crusoe was the main character in the novel Robinson Crusoe which was written by Daniel Defoe.
Robinson Crusoe and Friday often wore eyeglasses in the novel in which Robinson Crusoe was farsighted because he can he see object that are far or distance object clearly while Friday was nearsighted as he can see far object but can only see near object or object that are closer to him.
Hence the eyeglasses that they use whenever they wanted to start a fire by focusing the sun's rays was Robinson Crusoe eyeglasses.
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