What if humans are twins by default? | 如果人类默认是双胞胎？

Humans now default to one child, with occasional twins or multiples. But what if humans are by default twins?

First, of course, identification has become extremely important. Modern technology has alleviated many problems. I do n’t know how to manage twins in ancient times. You can't burn a mark on your face when you are born-but it was not impossible under the ancient level of governance.

Then, the reduction in the cost of comparative experiments will promote scientific progress. After all, people who have "the same general situation" become completely invaluable. Without considering human factors, there can be many experiments of various "control variables" that occur naturally. For example, through large-scale data to verify the correlation between nutritional status and height and weight, or even the height and weight of the next generation.

Third, social classes will be more solidified. The number of people born with the golden key will be doubled, and it will inevitably squeeze the living space of Takako from the cold door.

Don't write anymore, my twin brother asked me to help him participate in a remote interview.

originally posted in Chinese on 2020-2-29 at https://mp.weixin.qq.com/s?__biz=MzU1ODg0MDk4NQ==&mid=2247484008&idx=1&sn=702d93cd2c0294e82e73fc6b0b53029d&chksm=fc212f9ecb56a68813d59d1d92650d71d7e29083ab04497bad603730e360deb9fbc9a3f4772c&token=882526608&lang=zh_CN#rd

现在人类默认是一胎一个，偶尔有双胞胎或多胞胎。但要是人类默认是双胞胎的世界，是怎么样？

首先，身份识别当然变得异常重要。现代技术已经缓解很多问题了，不知道古代是怎么管理双胞胎的，这替考啊替罪啊，完全没法弄。总不能生下来的时候在脸上都烫个标记——不过在古代的治理水平下倒也不是不可能。

然后，对比实验成本的降低会促进科学进步。毕竟“大体情况一模一样”的人就变得完全不珍贵，不考虑人为因素，自然而然发生的各种“控制变量”的实验就能有很多。比如通过大规模数据去验证，营养状况和身高体重甚至下一代身高体重间的相关关系之类。

第三，社会阶层将更加固化。含着金钥匙出生的人将增加一倍，势必挤压寒门出来的贵子的生存空间。

先不写了，我的双胞胎弟弟让我去帮他参加一场远程面试去。