Man seeks a stable experience and to mitigate risk.
The world is a scene of risk. Man fears because he lives in a fearful and risk world.
Man uses ritual to protect themselves from this risky world, as a psychological mechanism. Uses it as a sense to make sense of things to dwindle fear.
Risk + Reward stem from the same root. Man has to take risk to reach the world. The world is in a state of flux man does things to mitigate risk or change.