For many people, an equally mysterious topic is the mathematics surrounding cryptography. Cryptography was so intimidating a topic for many people studying for the CISSP certification exam, that the ISC2 removed it as one of the 10 core domains of the CISSP common body of knowledge. There are now 8 domains and cryptography is now but a sub-topic within the security engineering domain.
The book is indeed made for the non-mathematician reader who won’t be overwhelmed by that math in the book.
The first half deals with various types of payment systems. Gomzin describes ancient systems of bartering, then progressing to modern commodities and digital currencies.
For those looking to understand the cryptography behind payment systems and specifically Bitcoin; Slava Gomzin has a new book Bitcoin for Nonmathematicians: Exploring the Foundations of Crypto Payments (Universal Publishers ISBN-13: 978-1627340717), that provides a good overview of the topic.