Every research topic needs to be put in the context of existing theoretical background knowledge. To provide a full understanding of this book, this chapter provides brief insight into selected elementary background theories. Special attention is devoted to the concept of money, which is closely related to the critique of economic development in the 20th and the beginning of the 21st century. Rather than repeating basic economic theory, rhetoric used in the area of complementary economies from which the TB sprouts is introduced. After description of selected complementary economic systems and their relationship to TB, core values and concept of co-production, which are the rationale of any TB definitions, are uncovered. The context description should be comprehensive. Therefore, the additional insight into the issue of law and taxation, TB's societal function, and the role of information technologies is provided.