This course, Narrative Economics, is relatively short and proposes a simple concept: we need to incorporate the contagion of narratives into our economic theory. You can think of narratives as stories that shape public beliefs, which in turn influence our decision making. Understanding how people arrived at certain decisions in the past can aid our understanding of the economy today and improve our forecasts of the future.Popular thinking heavily influences our answers to questions such as how much to invest, how much to spend or save, whether to go to college or take a certain job, and many more. Narrative economics is the study of the viral spread of popular narratives that affect economic behavior. I believe incorporating these ideas into our research must be done both to improve our ability to anticipate and prepare for economic events and help us structure economic institutions and policy. Until we better incorporate it into our methods of analysis and forecasting, we remain blind to a very real, very palpable, very important mechanism for economic change. Even in the dawning age of the Internet and artificial intelligence, so long as people remain ultimately in control, human narratives will matter. Maybe they will especially matter as the new technology exploits human weaknesses and creates new venues for narrative contagion. If we do not understand the epidemics of popular narratives, we cannot fully understand changes in the economy and in economic behavior.