1949, St. Rita High School, Chicago, IL. Father Albert Durant, an Augustinian priest, taught Senior English to the Class of 1949. A class assignment: With pen, ink, and a straight edge, create a graph of Macbeth. To do this, reduce Macbeth to a series of Weighted Events, creating a graph using the accumulated total of those Weights. The climax of Macbeth is the peak of the graph.
Remember, it's 1949, no World Wide Web, no calculators, only a straight edge, pen, ink and mom’s typewriter.