And I responded to at least one email about this issue, someone quite correctly said tuple are immutable, how can I change one?

我在不止一封邮件里回复了这个问题,一些人很明智，知道元组不可变,但是疑问怎么能去改变他们，我的答案是？

麻省理工公开课 - 计算机科学及编程导论课程节选

And people who have the constrained vision think that our instincts, our inclinations, our basic nature is immutable, accepted.

执有人性受约束的观点的人认为,我们的本能，欲望，我们的本性是永恒的，唯有接受。

哈佛公开课 - 幸福课课程节选

Our system, therefore, so far as regards this inferior race, rests upon this great immutable law of nature."

因此,我们政府在对待这一劣等种族时,必须以这一永恒的自然规律为基础"

耶鲁公开课 - 美国内战与重建课程节选

The key thing about both of them is that they were immutable.

关于他们有一点很关键的,就是他们都是不可变的。

麻省理工公开课 - 计算机科学及编程导论课程节选

People who hold constrained vision of human nature, believe that human nature cannot be changed; it's immutable-- we have certain instincts, we have certain inclinations.

认为人性受约束的观点的人，相信人性无法改变;,它是永恒的，我们有一些本能，有一些欲望。

哈佛公开课 - 幸福课课程节选