不是，如果无效论点有真前提呢？

Nope. What if it's an invalid argument with true premises?

youdao

如果无效或不包含则要考虑追加保险。

If it does not, consider supplemental insurance.

youdao

如果无效，进行二线治疗。

If it is not effective, a second-line treatment is given.

youdao

We've seen in class that you get garbage values if you don't initialize something to a value so let me actually initialize x to a value.

我们在课程上了解到，如果你不给一个变量,进行赋值，它会获得一个无效值,让我把x初始化为一个值。

哈佛公开课 - 计算机科学课程节选