I use tools from physics (like path integrals) to study intrinsic noise in gene regulatory networks, and am partial to analytic approaches. I am very interested in the different ways to model noise, and how noise qualitatively impacts landscapes and single cell trajectories. More broadly, I am fascinated by the relationship between models describing the same system at different scales; how should we understand these relationships, and how can the emergence of new features be ‘observed’ as we move between descriptions?