Kenneth, what’s the frequency

“A fundamental principle of statistical physics is that Nature seeks low-energy configurations. The random organization of molecules in a room is governed by this principle. Rarely observed configurations (e.g., all of the molecules gathering in a corner of the room) have high energies and hence very low probabilities. Common configurations (e.g., molecules isotropically distributed throughout the room) have low energies and much higher probabilities, high enough so that they are essentially the only configurations ever observed.” – Matthew Richey, “The Evolution of Markov Chain Monte Carlo Methods”