>As gravity is related to mass, the size of an event horizon, also known as the Schwarzschild radius — after Karl Schwarzschild, the first physicist to solve the equations of general relativity and inadvertently predict the existence of black holes — also depends on the mass of a black hole.
It also leads with this: >and potentially revealing a path toward a theory of quantum gravity.
But unless I missed it they never really came back around to explain their points