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学习笔记 | 本能不自由,爱情不自由?

  • 2026-01-12 15:33:14
学习笔记 | 本能不自由,爱情不自由?

学习笔记 | 本能不自由,爱情不自由?

接上一篇学习笔记 || 自由意志可能只是幻觉 介绍了自由意志的概念,讨论了自由意志存在与否对人类社会的秩序产生的影响,得出结论:
自由意志是美好的幻觉。

从以下两个方面来说明”自由意志不存在“:一是动物的本能行为;二是人类高级行为中的爱情。

(一)本能行为层面
本能行为是指天生具备、无需后天学习的行为,由遗传物质直接塑造和控制。如饥饿时进食、口渴时饮水、困倦时睡眠、危险时逃跑、抚育后代、性冲动等。
本能行为没有自由意志的说法。本能不需要自由意志。
为什么?
①心理学解释:驱动力降低理论
美国心理学家赫尔(Clark Leonard Hull)于1940年代提出该理论,以“水桶模型”解释本能行为:
- 压力积累:需求(如饥饿)随时间增强,如同水桶蓄水(例:长时间未进食导致饥饿感累积)。
- 行为释放:执行本能行为(如进食)可释放压力,如同水桶放水(例:饱餐一顿后饥饿感消除)。
- 核心结论:本能行为是压力驱动的自动反应,无需高级认知或自由意志参与。

②神经生物学证据:AgRP细胞的调控作用
- 关键发现(2005年):小鼠下丘脑的AgRP细胞是进食行为的“总开关”:破坏AgRP细胞 → 小鼠停止进食直至死亡;人工激活AgRP细胞 → 小鼠即使饱腹也会大量进食(食量增加几十倍)。
- 调控机制:AgRP细胞如同“能量监测器”,通过检测血液葡萄糖、脂肪储备、消化状态等指标,整合能量水平信号,直接触发“饥饿”感受。

③极端案例:1942年黄河旱灾中,饥民明知观音土(不可消化的白色软泥)无法提供营养且致命,仍因饥饿本能食用,以获取短暂饱腹感。
结论:生存本能可压制理性判断,证明本能行为的非自由性。

(二)爱情行为层面
①生物学基础:人类体型差异小,进化上倾向一夫一妻制。
②基因与化学物质对爱情忠诚度的调控
- 动物实验:草原田鼠的忠诚度由血管紧张素受体基因决定——爱情忠诚度受基因直接调控。
- 人类研究:血管紧张素受体基因变异与婚姻问题相关,女性出轨40%可由此解释——人类爱情行为同样受基因影响。
- 化学调控:多巴胺、催产素等激素影响配偶忠诚度——化学物质可操纵爱情行为。

核心结论
1.行为的生物决定性:无论是基本生存本能还是看似高级的爱情行为,都受底层生物信号强烈影响。
2.道德与自由意志的分离:爱情忠诚等道德行为本质上受基因和激素调控,与自由意志关联较弱。
3.普遍适用性:自由意志在维持生存繁衍的行为层面"压根就不存在"

魔方MAN

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      北京,2026年1月12日 13:14,

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      1. CONNECT:[ UseTime:0.000665s ] mysql:host=127.0.0.1;port=3306;dbname=no_67808;charset=utf8mb4
      2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000717s ]
      3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000281s ]
      4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000263s ]
      5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000536s ]
      6. SELECT * FROM `set` [ RunTime:0.000170s ]
      7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000540s ]
      8. SELECT * FROM `article` WHERE `id` = 459838 LIMIT 1 [ RunTime:0.005833s ]
      9. UPDATE `article` SET `lasttime` = 1768223219 WHERE `id` = 459838 [ RunTime:0.009665s ]
      10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000331s ]
      11. SELECT * FROM `article` WHERE `id` < 459838 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000512s ]
      12. SELECT * FROM `article` WHERE `id` > 459838 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000465s ]
      13. SELECT * FROM `article` WHERE `id` < 459838 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.002327s ]
      14. SELECT * FROM `article` WHERE `id` < 459838 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.022610s ]
      15. SELECT * FROM `article` WHERE `id` < 459838 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.050077s ]
      0.166925s