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学习笔记 20260428

  • 2026-04-30 06:36:33
学习笔记 20260428
Hi，我是萌萌。
笔记标记注释：⭐金句，💡个人思考，📝注释/备注，📚参考文献（论文/书籍），🔗网页链接，⚠️注意事项，❓️疑问。
01 万维钢·现代思维工具100讲
世界服从极端值
这个世界并不服从平均值，而是服从极端值。换句话说，这个世界是一个重尾分布的世界。
造成重尾分布的原因有很多，都跟某种“正反馈”有关系：越大越容易变得越大（马太效应）。
做乘法，不要做加法
财富、机会和声望都属于“乘法世界”：你的增量 = 你当前的动作 × 你的存量。存量越大，增量就越大，也就是复利。
成为重尾的方法：第一，改变“求平均”的观念；第二，认准一个能让你做乘法的领域，实施正反馈。
【⭐OpenAI CEO 山姆·奥特曼：一般来说，最高的投资回报率来自于在你本来就擅长的领域变得更好，而不是在你薄弱的领域改进……大多数人过于关注自己的弱点。你希望在某个狭窄的交叉点上做到世界一流水准，而不是把一大堆事情做得比较好。】
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  1. CONNECT:[ UseTime:0.000562s ] mysql:host=127.0.0.1;port=3306;dbname=no_67808;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000747s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.004075s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000313s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000534s ]
  6. SELECT * FROM `set` [ RunTime:0.000214s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000541s ]
  8. SELECT * FROM `article` WHERE `id` = 484750 LIMIT 1 [ RunTime:0.000526s ]
  9. UPDATE `article` SET `lasttime` = 1777506027 WHERE `id` = 484750 [ RunTime:0.004133s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000254s ]
  11. SELECT * FROM `article` WHERE `id` < 484750 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.002587s ]
  12. SELECT * FROM `article` WHERE `id` > 484750 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000530s ]
  13. SELECT * FROM `article` WHERE `id` < 484750 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.010550s ]
  14. SELECT * FROM `article` WHERE `id` < 484750 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001307s ]
  15. SELECT * FROM `article` WHERE `id` < 484750 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001037s ]
0.105394s