In a low-research day, Iain Murray (Edinburgh) sent me email telling me to never use kernel density estimates! I was flattered but I asked for some clarification. Chris Martin (Caltech) gave an inspiring seminar about directly observing the intergalactic medium in emission with ultraviolet imaging spectroscopy. He showed some very nice astrophysics results from pilot projects. This could change the world; right now most of the baryons in the Universe are invisible. Foreman-Mackey started work on his punk Kepler data interface.