But it turns out that as we'll see that functions absolutely take arguments, right?

但结果是我们将看到,函数绝对是有参数的，对不对？

哈佛公开课 - 计算机科学课程节选

Absolutely, by functions, but you can also create local scope with curly braces.

绝对的，是由函数定义的，但是你也可以用花括号来创建局部范围。

哈佛公开课 - 计算机科学课程节选