This could be beneficial not only for individuals or households but also for the economic system of countries. However, it's easy to see that most of us lack financial knowledge. This concerns not only governments, but also various researchers, for example Lusardi, A. (2008); Marcolin, S.; Abraham, A. (2006). Alan Greenspan, Chairman of the US Federal Reserve, once said: “The number one problem of today's generation and economy is a lack of financial literacy. » After a logical and systematic analysis of scientific research, the authors can agree on conclusions that financial literacy is too weak in a large part of the world's households.