I spent the day in Princeton, with Foreman-Mackey. We spoke with Spergel about WFIRST, Bakos about HAT, Tremaine about exoplanet distribution functions, and Turner and Spiegel about predicting and characterizing exoplanets. Before lunch, Guhathakurta (UCSC) talked about Andromeda and its substructure. At lunch, I talked about self-calibration. And in the late afternoon I gave my seminar, about probabilistic methods for measuring exoplanet populations. I also included a tiny bit of XDQSO, which was a good idea, since it really showed that hierarchical modeling works.