This essay in cultural anthropology provides a comprehensive view of the way primitive people in all parts of the world once utilized knots; mnemonic knots--to record dates, numbers, and cultural traditions; magic knots--to cure diseases, bewitch enemies, and control the forces of nature; and practical knots--to tie things and hold things together. In his discussion of mnemonic knots, the author analyzes the Peruvian quipus (or knot-calendars and...