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  1. Making choive-->world of scarcity
  2. Econmoics models are the simplified version of reality used to analyze real-world economics situation
  3. three key ecomics ideas
  • people are rational
  • peolpe are responds to economics incentives
  • optimal decision are made at the margin
    • considering MB and MC --> marginal anaslysis
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    Kuihao

    溫暖午後的金針田__孕育有趣的創新

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