引入

艺术的核心是表达
科学的核心是发现
工程的核心就是实现

两种思维

搬砖思维（相信量变引起质变）
- 对战术上正确的重视远胜于对战略上正确的重视
风口思维（不相信量变引起质变）
- 对战略上正确的重视远胜于对战术上正确的重视

两种快乐

多巴胺型快乐
- 先甜后苦型快乐
- 通常所有享乐型的快大多都是多巴胺型快乐(刷抖音、吃甜品、谈恋爱、抽烟、喝酒、购物、打游戏、逛夜店等等)

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愤怒抑郁

沉迷多巴胺

免疫力下降

亚健康

内啡肽型快乐
- 先苦后甜型快乐
二者结合，效果更好
- 例如，在完成一件搬砖工作后，放自己稍微放松，享受多巴胺带来的快感

工程分解结构（Work Breakdown Structure）

把任何复杂的事情拆分成
易于操作的简单模块
然后一个一个搞定

这个世界上没有解决不了的问题
只有承受不了的成本

举个例子（造火箭）

火箭无非就是由N个部分构成
先找第一个部分把他搞定
再找到下一个把他搞定
以此类推
最终就可以拼凑出一个火箭

如果没有分解就无从聚焦
如果没有聚焦分解了也没有意义

Focus like a laser,not a flashligh --------Michael Jondan

天下难事必作于易

量化（Quantification）

关键在于应该计算什么
而不是执着于计算结果

掌握基本的加减乘除即可运用量化知识

面试题

计算一下万里长城有多重
塞满房间需要多少个网球
上海有多少家健身房
北京有多少个下水道井盖
如何知道开一家奶茶店是否赚钱

解决通法：工程分解结构

从最简单的地方开始假设
- 假设房间长4米
- 假设万里长城1000公里
推演所有变量：写下来画出来说出来
- 如何知道开一家奶茶店是否赚钱
  1. 找到最容易想到的变量
  2. 通过叙事找到更多的变量
  3. 简单的四则运算

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学科03：工程学重要模型

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