The author explains how these schemers operate, thus, how to prevent their schemes from working. The change raiser, unlike the shortchanger, does not shortchange the victim, but tricks the victim into giving too much change. There are several variations in method; all depend on creating mathematical confusion through the back-and-forth exchange of money, and distractions at just the right moments. Even if an intended victim is alert enough to catch the discrepancy and balance the money, he or she likely will dismiss the incident as an innocent mistake, not a calculated scheme. The amateur shortchanger will simply give too little change and hope the victim won't bother to count it; the professional will go through distracting motions, counting off the change while giving it to the victim, making the victim believe the counting is accurate. A two- crook scheme called the "Flim-Flam" or the "Pigeon Drop" is featured, as is a shortchange trick that can be done on a stage.