Is is essentially saying, given 2 things, do they point to exactly the same referent?

或者换种思考的方式，大家记得我说过当我们，调用类的定义声明的时候,它会创建一个实例？

麻省理工公开课 - 计算机科学及编程导论课程节选

Right now it's empty, actually it's not quite empty, it has a pointer back to the class.

当我调用了这个类的，定义声明的时候，它在内存中的特定点。

麻省理工公开课 - 计算机科学及编程导论课程节选