The point of this story is that lacking adequate detail, the earth going around the sun, and the sun going around the earth, would look exactly the same from the perspective of someone on earth. With two solitary bodies revolving around each other, lacking sufficient information it is impossible to tell which is revolving around which. In much the same way it is impossible to tell if the conscious mind is the manifestation of a physical universe, or if the physical universe the manifestation of a conscious mind. The two would look the same. Or would they?
Of course by looking more closely at the universe around us we can determine that it is indeed the earth that rotates around the sun, and not the other way around. For those who have the ability to see and understand it, the evidence of who revolves around whom, is clear. But is there any evidence to tell us which manifests which, the physical universe, or the mind?
What evidence could we look for to determine if the universe is merely the manifestation of our own mind, or whether we in fact we are a manifestation of it?
Perhaps you don't need a massive physical universe with billions upon billions of conscious minds. Perhaps all it takes, is one. But like the pupil watching the sunrise, how would you know?