Always with decreasing energy. Evolution is then a sign of complexification Hierarchy is a sign of discontinuous energy gradients. All interactions take place within strata. Between the strata, there is nothing observable. In atomic physics, have Shroedinger principles, and Pauli exclusion rules, but then don't see chemical properties.
Natural system evolves from the bottom-up.
Several types of patterns exist. Patterns of events are a rearrangement of the information. Looking for invariants, because we believe that nature is governed by laws. Laws of nature need to be distinguished from laws of science. Universal gravitation and the space-time continuum replaces the law of gravity, also which noone has ever seen.