古人如果活過了21歲，就大概率可以活到6，70歲。我在好幾本

不同的書裏都讀到這個說法, 所以估計這個說法的可信度還行。

下麵鏈接是幾年前讀到的印象特別深的一篇：

https://www.bbc.com/future/article/20181002-how-long-did-ancient-people-live-life-span-versus-longevity

From 1200 to 1745, 21-year-olds would reach an average age of anywhere between 62 and 70 years

 

The life span of humans – opposed to life expectancy, which is a statistical construct – hasn’t really changed much at all

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• 你這麽一說我也想起來好像是看過類似的說法。我隻是不記得是21歲這麽精確了 -donau- ♀ (0 bytes) () 09/27/2023 postreply 22:49:39