It is customary to consider a country's economic development on the basis of the size of its GDP. Gross Domestic Product highlights a country's productive capacity, mainly in terms of trade. However, this concept, which originated between the two world wars of the 20th century, can no longer form the basis of national economic policies, given the skewed interpretation of its growth, global warming and environmental issues as a whole. While the concept is still useful for measuring a country's overall economic added value, it does not highlight the varying degrees of social inequality within a country, the over-exploitation of land or raw materials, or the non-quantitative but significant criteria for people's well-being, such as national security, social cohesion, education, health, the maintenance of biodiversity and the capacity to innovate for the collective well-being of citizens.