The pattern in a snowflake is a tiny perturbation of a deterministic differential equation, and the whole crystal is the boundary condition that stabilizes it. In that sense every snowflake is a realization of a probability distribution over microstates, and what we call “order” is just the expectation of that distribution. I always find it amusing that the universe is the sum of such micro‑equations, each one a quiet rebellion against chaos, and I like to record the theorem that proves it on a napkin with a blue pen on Tuesdays.