Recall a simple and ancient truth: the subject of knowledge cannot exist independently from the object of knowledge. To see is to see something. To hear is to hear something. To be angry is to be angry over something. Hope is hope for something. Thinking is thinking about something. When the object of knowledge (the something) is not present, there can be no subject of knowledge. The practitioner meditates on mind and, by so doing, is able to see the interdependence of the subject of knowledge and the object of knowledge.
