““Similarly, a law of physics that allows information to be converted into geometry, and vice versa, but gives no account of why, should not survive for long. There must be something deeper and simpler at the root of the equivalence. This raises two profound questions: Is there an atomic structure to the geometry of space and time, so that entropy of the black hole could be understood in exactly the same way that the entropy of matter is understood: as a measure of information about the motion of atoms? When we understand the atomic structure of geometry will it be obvious why the area of a horizon is proportional to the amount of information it hides? These questions have motivated a great deal of research since the mid-1970s. In the next few chapters I shall explain why there is a growing consensus among physicists that the answer to both questions must ne 'yes'.””
