"I don't think at this point there is evidence that that can be done in a consistent way because people do tend to regain weight."

VOA: standard.2010.07.16

It becomes a 13 and that is consistent with the code and it also doesn't crash because now y has been assigned to the correct value.

它变成了一个13，这个和代码是一致的,程序也不会崩溃,因为现在y被赋了正确的值。

哈佛公开课 - 计算机科学课程节选