Perhaps peacegirl’s “movement in the direction of greatest satisfaction” may have a role to play. When greater satisfaction includes physical phenomena as affinity, or attraction, or magnetism, then a natural tendency to find comfort (fit) could lead to a causal action.
Gravity is the exercise of something falling and settling down at its lowest point (closest to the center). Things will actively fall down, but never actively fall up. It’s a one way street ---------> , evolution.
An interesting example is how a plant seed knows it is upside down 8" below the surface. It has a gimbal system which tells it what direction it is facing. How Do Plants Know Which Way Is Up And Which Way Is Down? : Krulwich Wonders... : NPR