The article explores different theories about how money moves in the economy, focusing on Post Keynesian and circulation approaches. Post Keynesian theory emphasizes the role of money in influencing economic activity, while circulation views look at how money flows through the economy. The researchers discuss the historical development of these ideas and compare them to mainstream economic theories. They also examine the concept of endogenous money, which refers to money being created within the economy rather than by external factors. The goal is to understand how these different perspectives can help explain financial systems and crises.