Karl Friston discusses the free energy principle, which states that if something exists, it must be exhibiting properties that may look as if it is optimizing a particular quantity. He applies this principle to the states of a system, and discusses how the states can be partitioned into internal, external, and blanket states. He then applies standard results from non equilibrium physics to the partitioning of the blanket states into sensory and active states.
Karl Friston discusses the free energy principle, which posits that changes in an entity's internal state are responsible for changes in its external state. He also discusses how this principle can be applied to artificial intelligence and consciousness.