Sorrera (IV)... the wheel of dependency is the endless chain of causation by which events arise and their division into 4 - Causation, Feeling, Mind, Body. Body has sensations Mind has choice, Feeling has memory and Causation has coincidence, Memories and sensation, choice and coincidence eternally competing. Cooperating winning and losing, driving the cycle of injection, compression, ignition, exhaust, ingestion, digestion, conversion excretion - the 'otto' cycle of the Body.