There is a strong correlation between economic complexity and the per capita income generated by countries. To better understand this relationship, let's take China and Thailand as an example. The two countries have high levels of economic complexity but low levels of per capita income. Low per capita income and high economic complexity mean that these countries are rich through productive knowledge. When the opposite is the case, that is, countries have low economic complexity and high levels of per capita income, countries are rich not thanks to productive knowledge but thanks to large volumes of natural resources. Economic complexity therefore affects the country's per capita income and guides its future