Suppose that we have experimentally confirmed that some gravitational degrees of freedom are quantum mechanical by inducing entanglement between two gravitationally interacting matter wave packets. The question then arises as to what the quantum degrees of freedom of gravity might be. Should we think of different components of the gravitational field as q-numbers, or should we think of the spacetime itself as being quantised? In my talk, I plan to speculate about how one might be able to tell the difference.