Prairie landscapes from 1927 turn a train and tall grain elevators into minimal vertical and horizontal strokes, while roiling clouds and the engine's rising smoke prefigure familiar abstract elements.
He is heralding the advent of the new religion, and the wall-paintings above him depict Old Testament scenes regarded by medieval theologians as events that prefigure Jesus' life and fate.
In the same way that evolution by natural selection can produce purposeful designs without an intelligent designer to prefigure the purpose, so animals can show behavior that evolved to be purposeful but is not psychologically motivated.