The #emergent properties of #complex adaptive #systems are the product of the "bottom-up" interaction of components that maintain the system's existence and #growth which are only constrained (#controlled) by the emergent internal (structural) #rules of the system as a whole, and the limitations of its #environment niche.
There is no such thing as "#downward_causation".
@pj Have you read Sabine Hossenfelder's new book Existential Physics? It has a great explanation of this point along with arguments about why it's correct.
