John Singer Sargent's painting known as "Madame X" was disputed when it was shown in eighteen eighty-four.

VOA: special.2010.08.04

I'm taking advantage of the fact that start is going to be a point, and I'm just directly saying, John give me your x-value.

我利用了开始是一个点这个事实,然后我就直接说，返回给我你的x值，因此我不知道。

麻省理工公开课 - 计算机科学及编程导论课程节选