Post Keynesian economics is a different way of looking at how the economy works, based on ideas from Keynes. It focuses on how demand for goods and services affects economic growth. Three models are discussed: one by Paul Davidson, one by Michal Kalecki, and one by Hyman Minsky. Post Keynesians believe that policies like spending money and managing finances can help the economy grow. They think that understanding how money works is important for making good economic decisions. The future of Post Keynesian economics is being considered.