A Little History of Economics - 001

Chapter 1 Cool heads and warm hearts Economics is the study of how societies use their resources. scarcity - limited amount of resources opportunity cost - making choices positive economics "what is" 实证经济学 normative economics "what ought to be" 规范经济学 cool heads+warm hearts+self-critical eyes

每次说贫穷都举例说非洲国家，有点歧视啊！