In the causal set approach to quantum gravity, the spacetimecontinuum is replaced by a discrete substructure, the causal set, which isa locally finite poset. I will spend the first half of the talk with ageneral introduction to causal set theory. I will then discuss a 2D modelof causal set quantum gravity which overcomes the so-called entropy problemassociated with quantum geometries. In particular, 2D Minkowski spacetimeis a prediction of the theory in the large volume limit.
