Sixth year graduate student Sam Fletcher will present a paper at a Seminar on the Philosophical Foundations of Quantum Gravity, hosted by the University of Illinois at Chicago. Fletcher's paper considers an area of physics known as causal set theory, which represents one attempt to bring together the two great revolutions in twentieth century physics -- relativity theory and quantum theory -- to produce a quantum theory of gravity. In particular, Fletcher asks whether the relationship between causal set theory and Einstein's theory of gravity, general relativity, works in the same way as other such relationships, including the one between general relativity and the still-older Newtonian theory of gravitation. The conference will take place from the 27th to the 29th of September.