Joseph Ganem is an associate professor at Loyola College in Maryland where he teaches physics and mathematical methods for physics. He is the author of The Two Headed Quarter: How to See Through Deceptive Numbers and Save Money on Everything You Buy. The book covers a wide range of topics that touch on on almost all aspects of our consumer lives. Whether shopping for items large or small, negotiating a salary, investing in stocks, or planning f or retirement, the book shows how numbers are routinely used to fool people.