重新审视经济增长的物理限制,重点关注废热限值
Dorian S Abbot1, Anup Malani2,3
1Department of the Geophysical Sciences, The University of Chicago, Chicago, Illinois, United States of America.
PloS one
|March 13, 2025
概括
经济增长的物理限制受到辩论. 这项研究使用了经济和物理模型,发现废热可能不会限制几个世纪的增长,这表明长期经济扩张的潜力.
科学领域:
- 经济学 经济学 经济学
- 环境科学 环境科学
- 物理 物理学 物理
背景情况:
- 关于经济增长的物理限制存在长期争论,自然科学家和经济学家之间存在不同的观点.
- 一种观点强调有限的资源作为限制,而另一种观点强调提高生产率和替代作为解决方案.
- 缺乏一个共同的框架来协调这些对立的观点.
研究的目的:
- 使用经济和物理模型提供一个共同的框架,以解决关于经济增长的物理限制的辩论.
- 调查废热作为经济增长的潜在制约因素的作用.
- 探索人口增长和技术创新对长期经济可持续性的影响.
主要方法:
- 利用简单的会计身份来评估历史生产率增长的经济和人口扩张能力.
- 采用Cobb-Douglas生产函数与人口增长驱动总因子生产率增长的模型相结合,以预测未来的生产率.
- 结合了替代生产功能的恒定弹性和历史资源替代数据来分析资源限制.
主要成果:
- 历史的生产率增长可以支持适度的经济和人口增长 (1.2%).
- 模型结果显示了关于废热限制的显著参数灵敏度,限制可能永远不会发生或在几百年内发生.
- 人口增长场景的减少和增加都会延长热量限制的时间,而后者会增加创新.
结论:
- 人类拥有替代稀缺资源的能力,这是历史趋势所证明的.
- 该研究表明,在千年时间尺度上,可能会出现乐观的长期经济增长.
- 废热是一个关键因素,但其对经济增长的限制高度依赖于模型参数和人口动态.
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