https://blog.gongquiz.com/2023/01/09/%ea%b7%b8%eb%a6%bc%ec%9d%98-%eb%a9%b4%ec%a0%81%ec%9d%84-simpson-%ec%a0%9c2%eb%b2%95%ec%b9%99%ec%9c%bc%eb%a1%9c-%ea%b5%ac%ed%95%9c-%ea%b0%92%ec%9d%80-%eb%8b%a8-%ec%a7%80%ea%b1%b0%eb%8a%94-%ec%9d%bc/