Human Espionage
Put yourself in the 1920s. Charles Lindbergh became the first man to fly solo non-stop across the Atlantic Ocean. Insulin and Penicillin were discovered. Espionage was already active. In these days, spies were handsome and charming young men who could win the hearts of young women anywhere. And these were must-have attributes in a spy in order for them to function effectively. They needed to approach the secretaries of their targets and establish a close personal relationship with them, in order to gain their confidence and trust.

Once Mr. Spy felt he had the trust of Miss Secretary, he could start asking her to provide some seemingly harmless items to him, such as the carbon paper that she used that afternoon. With this carbon paper, Mr. Spy will be able to find out the secret details of the development meeting held that afternoon for the new weapon. Of course, if the secretaries were young and pretty, Mr. Spy’s jobs were made much easier.